[android-developers] Re: I want to develop browser app but i am getting errors help me please
Hi David, i am also facing this problem and If you still search to solve this problem please please contact pankaj to solve this problem email id : pankaj[dot]s[at]shaligraminfotech[dot]com On Friday, September 23, 2016 at 12:08:34 PM UTC+5:30, David Miller wrote: > > Hi I am new to android i want to develop a browser app now I am trying to > develop it in this i am getting errors. > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. To post to this group, send email to android-developers@googlegroups.com. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/c4242f0b-fceb-4668-b5e1-92c71db037c7%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: BLE Data Transfer Question
BLE is designed for broadcasting tiny amounts of data in packets (20 bytes). That would be entirely inefficient for larger amounts of data. There is no reliable data streaming mode for BLE. These little chunks of data broadcast periodically are what make it "low energy". The typical use case for BLE is with a beacon that repeatedly broadcasts information some state or information about itself to any other device that wants to listen. On Friday, March 18, 2016 at 8:19:03 AM UTC-7, Adam Rogowicz wrote: > > If I am using BLE to transfer data, say updating firmware on a peripheral > device, what should I expect in the following situations? Will the > transmission be interrupted, aborted, paused, etc. > > >1. If the user receives a phone call >2. If the user's device times out to the lock screen (auto lock) >3. If the user gets a text message >4. if the user connects a bluetooth headset > > > I'm looking for a very quick response if at all possible, if you can > answer part of my question or all of it, please chime in. > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. To post to this group, send email to android-developers@googlegroups.com. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/1ce7c47f-fdb1-492e-8620-e8a286ca%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Difference between swiping in all apps menu and pressing back to exit
The service IS the app. There is no service without an app process to host it. When your app process is killed (and you can never prevent that from happening) the service and all other app components will go with it. Anything else would be impossible for Android to manage since it chooses not to support the idea of a user knowingly closing an app like users expect on desktop operating systems. On Sunday, January 3, 2016 at 9:12:15 AM UTC-8, Nick Teo wrote: > > Ah yes you're totally right. I started it sticky and that's why it's > coming back to life. Is there a way to keep the service running after the > app itself is killed? If not I guess I'll have to store the list in > persistent memory and load it in when the service starts. -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. To post to this group, send email to android-developers@googlegroups.com. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/6d5e73a2-b04b-47e3-a6dd-2ae20f47efe5%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Difference between swiping in all apps menu and pressing back to exit
Dismissing an app in the task switcher is the same as killing it. If your service comes back after that, then something started the process again. Maybe your service is "sticky" and got restarted. There is no guarantee your app's process can survive anything, so you should persist any changes that you do not want to be potentially lost. Doug On Wednesday, December 30, 2015 at 7:29:43 PM UTC-8, Nick Teo wrote: > > Hi all, > > I'm working on a messaging app that starts a service in the background > that will receive messages from a Pebble smartwatch and then send out an > sms message. Right at this moment, I'm trying to make it so that the > service is always running in the background so that the user can always > send texts even if the app isn't actually open. There is a private local > variable in the service that contains the contacts that the user can send > texts to. When I press the back button to exit the app after setting the > contacts, the list persists and when I open the app again, I see the > contacts. If I open up the all apps menu thing and swipe the app to exit > it, the list is destroyed, however, I know the service is still running (I > get Toasts from the service). I was under the impression that swiping the > app closed and pressing the back button are the same. Are they not? Is > there a way to make it so that the local variable is never destroyed as > long as the service is running? > -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. To post to this group, send email to android-developers@googlegroups.com. Visit this group at https://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/018f21c0-cdd0-4b30-a131-c3069c81e3b4%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] How to send reference object to a fragment in android studio
On Thursday, December 3, 2015 at 8:03:24 PM UTC-8, TreKing wrote: > > > On Thu, Nov 26, 2015 at 12:35 AM, Vinayak Mestri <mestri.v...@gmail.com > > wrote: > >> I want to do like above code i.e student is reference variable so if i >> change any values of student arraylist will reflect to actual object in >> activity > > > 1 - Look at the documentation for Fragment which shows the static > constructor pattern that is typically used to construct a fragment with > parameters. > http://developer.android.com/reference/android/app/Fragment.html > Your model object would implement the Parcelable interface to be passed > along as data. > > 2 - You can then let the Activity know when changes are made via callbacks: > > http://developer.android.com/guide/components/fragments.html#CommunicatingWithActivity > > You generally don't want the exact same data object in the activity and > fragment. > You generally *do* want the exact same data object if the object is large and would take significant time and memory to serialize and deserialize in a fully duplicated form. This is especially OK if your source object is immutable and therefore threadsafe and immune to tampering for read operations. > If you really really do, you could alternative expose it as a public > method in the Activity then instead of passing it to the fragment, access > your activity in the fragment (onAttach or onActivityCreated or something) > and get the list data, which would be the actual list both objects would > share. > Also, if serialization is not a well-performing option, sending the fragment an indicator on how to find the collection would be fine. Sometimes people use an event bus to publish stored data object to dependents. Sometimes receiving from a singleton is good enough as long as it's not adding too much weight to the app. Sometimes querying a content provider (backed by sqlite database) for very large collections is appropriate. Doug -- You received this message because you are subscribed to the Google Groups "Android Developers" group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. To post to this group, send email to android-developers@googlegroups.com. Visit this group at http://groups.google.com/group/android-developers. To view this discussion on the web visit https://groups.google.com/d/msgid/android-developers/a903fbfa-9b30-4941-a94f-4831c310686c%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Is runOnUiThread() ever 'safe' to call? If not why is it not deprecated?
There's a difference between promoting and showing a simple, terse
example. This I think is the latter. I'm pretty sure if you ask any of
the on-staff developer advocates if you should be writing
production-quality code like this, they will probably say no, using a
better mechanism. But this is short and to the point. The best
production-worthy example would, unfortunately, take at least twice as many
lines of code.
Also, this particular BT API is deprecated.
Doug
On Sunday, June 21, 2015 at 7:40:10 AM UTC-7, RLScott wrote:
Google is still promoting runOnUiThread in their sample Bluetooth Low
Energy device scan callback code:
private BluetoothAdapter.LeScanCallback mLeScanCallback =
new BluetoothAdapter.LeScanCallback() {
@Override
public void onLeScan(final BluetoothDevice device, int rssi,
byte[] scanRecord) {
runOnUiThread(new Runnable() {
@Override
public void run() {
mLeDeviceListAdapter.addDevice(device);
mLeDeviceListAdapter.notifyDataSetChanged();
}
});
}
};
-Robert Scott
Hopkins, MN
On Tuesday, June 9, 2015 at 12:39:13 PM UTC-6, Sam Duke wrote:
Due to the nature of config changes, the runnable submitted to
runOnUiThread may be executed after an activity has been destroyed (i.e. on
a stale activity). Therefore this API can cause all sorts of subtle bugs
with config changes and events never reaching the UI. I can't think of a
single case where it would be safe to use this. You should already have hit
the main thread by the time you are doing anything inside the runnable... I
think all it does is encourage poor patterns...
Given this, is it not time to deprecate this API?
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[android-developers] Re: Is runOnUiThread() ever 'safe' to call? If not why is it not deprecated?
To be fair, no one should be taking any advice about Android programming from a 6 year old blog! Just don't use unOnUiThread if it doesn't suit the situation. I have no explanation why it's not fully deprecated, but the fact is that there are so many other recent techniques for managing background work. I teach them in my class at AnDevCon, and they have better support on the official Android documentation and tutorials. Doug On Wednesday, June 10, 2015 at 5:59:39 AM UTC-7, Sam Duke wrote: I agree. The method has no real business being on an activity though right? It only promotes bad code. How would you end up on a background thread on an activity? Perhaps you are using your activity to ferry calls from model object A to model object B and object B requires you to be on the main thread. Wouldn't you be better gluing them together with another component. I would assert this is a rare case and runOnUiThread is a convenience method for this case, but how convenient is it really compared to the inconvenient mistakes it causes people to make. At the very least, why is it not a method on Context? I would say its presence on Activity does imply it is intended for making changes to views. In fact, here's a blog from 2009 telling you to do just that: http://android-developers.blogspot.co.uk/2009/05/painless-threading.html On Wednesday, 10 June 2015 08:24:27 UTC+1, Doug wrote: Calling runOnUiThread doesn't necessarily imply that you need to make changes to an activity or its views. If you just need to make sure some code is executed on the main thread for whatever reason, then it's OK to use this. It's morally equivalent to scheduling a Runnable on a Handler attached to the main thead, and there could be any number of reasons why you need to use the main thread instead of another thread. However, if you do need to make changes to an activity or its views, this is not the best method to call. There are other mechanisms like Loaders that are probably better solutions for the particular problem. If you just need to schedule a unit of work to run on the main thread without respect to any activity or view, I think this should be seen as a reasonable convenience to do so. It's just too bad that runOnUiThread this is a method on Activity because that could be misleading to the caller. Doug On Tuesday, June 9, 2015 at 11:39:13 AM UTC-7, Sam Duke wrote: Due to the nature of config changes, the runnable submitted to runOnUiThread may be executed after an activity has been destroyed (i.e. on a stale activity). Therefore this API can cause all sorts of subtle bugs with config changes and events never reaching the UI. I can't think of a single case where it would be safe to use this. You should already have hit the main thread by the time you are doing anything inside the runnable... I think all it does is encourage poor patterns... Given this, is it not time to deprecate this API? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Is runOnUiThread() ever 'safe' to call? If not why is it not deprecated?
Calling runOnUiThread doesn't necessarily imply that you need to make changes to an activity or its views. If you just need to make sure some code is executed on the main thread for whatever reason, then it's OK to use this. It's morally equivalent to scheduling a Runnable on a Handler attached to the main thead, and there could be any number of reasons why you need to use the main thread instead of another thread. However, if you do need to make changes to an activity or its views, this is not the best method to call. There are other mechanisms like Loaders that are probably better solutions for the particular problem. If you just need to schedule a unit of work to run on the main thread without respect to any activity or view, I think this should be seen as a reasonable convenience to do so. It's just too bad that runOnUiThread this is a method on Activity because that could be misleading to the caller. Doug On Tuesday, June 9, 2015 at 11:39:13 AM UTC-7, Sam Duke wrote: Due to the nature of config changes, the runnable submitted to runOnUiThread may be executed after an activity has been destroyed (i.e. on a stale activity). Therefore this API can cause all sorts of subtle bugs with config changes and events never reaching the UI. I can't think of a single case where it would be safe to use this. You should already have hit the main thread by the time you are doing anything inside the runnable... I think all it does is encourage poor patterns... Given this, is it not time to deprecate this API? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: where does Android Studio put the APK file?
On Tuesday, April 28, 2015 at 4:08:07 AM UTC-7, Spooky wrote: On Mon, Apr 27, 2015 at 11:42:12PM -0700, Doug wrote: Since Studio just delegates to gradle for all of its build activity, you too should just use the gradle command line if you want a particular build artifact. Ok, I have no problem with the command line at all (prefer it, actually), but what's the command? Btw, I'm on a Mac (OS X Lion), if I didn't mention that earlier. The assembleRelease and assembleDebug gradle targets will build an APK. Your best bet is to take time to learn the build system since that is where all the tooling is headed in the future. I'd start here: http://tools.android.com/tech-docs/new-build-system/user-guide The document is a bit outdated, but the concepts are valid. There is a lot to know, but it is very powerful and I'm guessing there will be no substitute or alternative in the future. Doug -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: where does Android Studio put the APK file?
It turns out that an Android Studio build just compiles the essential parts to verify that your project makes sense. It doesn't produce an APK. You can see in the status bar what gradle tasks it's running at any moment. Studio will only produce an APK when you go to run it on a device. Since Studio just delegates to gradle for all of its build activity, you too should just use the gradle command line if you want a particular build artifact. After you run the assemble[Debug|Release] target, you can find the resulting APK by running the following command line on unix-y type machines: find . -name \*.apk where . is the location of the project root directory where you probably issued the gradle command. Bottom line is that it's essential to learn the gradle way of doing things if you're going to be using Studio, since Studio builds all delegate to gradle. This is a good thing -- your IDE should not be the thing responsible for producing your build artifacts. Doug On Monday, April 27, 2015 at 12:52:26 PM UTC-7, Spooky wrote: Ok, I give up All of the posts (StackOverflow, etc.) I've found that tell me where Android Studio puts the apk file after a Build Project or rebuild project point me to directories that don't exist on my Mac. Where, after a successful project build in Android Studio, do I find the unsigned apk (in this case, listViewTest.apk) to load onto my various Android devices (cp to ~/Dropbox and side-load from each)? This is driving me nuts. It does build with no errors, and says the build was completed. But where is the apk file it generates? One says it's in app/build/outputs/apk/name.apk ... but app/build/outputs/apk doesn't even exist, which makes it a bit difficult for the apk to be there. Thanks, --jim PS: And I thought *EclipsE* was a major PITA (ok, it is, but). -- THE SCORE: ME: 2 CANCER: 0 http://fineartamerica.com/profiles/4-james-graham.html 73 DE N5IAL (/4) | AN EXCERCISE is a situation in which you stop what spook...@gmail.com javascript: | you're doing in order to simulate doing what you Running Mac OS X Lion | were doing so you can show someone else that you ICBM / Hurricane: | can simulate what you were doing as well as you 30.44406N 86.59909W| were doing it before you were interrupted. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] SQLite case insensitive matching
Similar questions have been asked, but many are old and it's not clear to me exactly what the resolution is. I have a list filter with a local db query that is matching columns against user input (uses MATCH, but that is probably not significant). Both the contents of the columns and the user input can be mixed case, but the match should be case-insensitive. This has been working (for years!) for most situations, but it was recently pointed out to me by a user (in France) that if he inputs a lowercase accented character, e.g. é, it will not match a database entry containing the uppercase equivalent, e.g. É. My understanding is that Android SQLite does not support this automatically as it does for ASCII characters, but is there a solution within Android? I have no control over what is in the database (it comes from an outside source) or what the user inputs. Doug Gordon GHCS Software -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Image is being oriented differently once uploaded to server, why?
I've seen this happen in a number of places when uploading images. The
basic issue is that there are two ways to save a rotated image: save the
raster data in the correct orientation and without metadata, or save the
raster data in its native orientation and set the metadata value to
indicate the desired rotation. The problem is that some software
implementations still do not look at the metadata field and just display
the raw raster image. So the photo may appear rotated correctly in one
place and not rotated in another!
On Sunday, April 12, 2015 at 1:00:41 AM UTC-4, Dan Cha wrote:
So within my app, i have the ability to allow the user to take a pic, see
a thumbnail within the app and once the form is submitted, its uploaded to
the server.
But something ive noticed lately is that (since im storing the image taken
in the users gallery within a folder specific to the app) if you view the
pic outside the app in the actually folder, it looks oriented correctly, if
i take it portrait its portrait, if i take the pic landscape, its stored in
landscape.
Also when the user is presented the thumbnail, it also shows correct, but
for some reason when the image is uploaded to the server, it no longer has
the correct orientation.
Im using ftp to upload the image with this code:
try
{
int reply;
String reply2;
ftpClient.connect(ftp.site.com);
ftpClient.login(site,pass);
ftpClient.changeWorkingDirectory(/imgs/);
ftpClient.setFileType(FTP.BINARY_FILE_TYPE);
BufferedInputStream buffIn = null;
buffIn = new BufferedInputStream(new
FileInputStream(file));
ftpClient.enterLocalPassiveMode();
ftpClient.storeFile(destinFolder,buffIn);
buffIn.close();
reply = ftpClient.getReplyCode();
if(!FTPReply.isPositiveCompletion(reply))
{
ftpClient.disconnect();
}
ftpClient.logout();
}
I even changed my logic to this and still nothing, the image is always
uploaded in landscape. Even though the thumbnail and stored image on the
phone is portrait.
Found at this link:
http://stackoverflow.com/questions/24629584/image-orientation-changes-while-uploading-image-to-server
int rotate = 0;
try {
getContentResolver().notifyChange(imageUri, null);
File imageFile = new File(al_image_paths.get(i));
ExifInterface exif = new ExifInterface(
imageFile.getAbsolutePath());
int orientation = exif.getAttributeInt(
ExifInterface.TAG_ORIENTATION,
ExifInterface.ORIENTATION_NORMAL);
switch (orientation) {
case ExifInterface.ORIENTATION_ROTATE_270:
rotate = 270;
break;
case ExifInterface.ORIENTATION_ROTATE_180:
rotate = 180;
break;
case ExifInterface.ORIENTATION_ROTATE_90:
rotate = 90;
break;
}
Log.v(Common.TAG, Exif orientation: + orientation);
Bitmap rotattedBitmap= BitmapFactory.decodeFile(al_image_paths.get(i));
Matrix matrix = new Matrix();
matrix.postRotate(rotate);
return Bitmap.createBitmap(rotattedBitmap, 0, 0,
rotattedBitmap.getWidth(), rotattedBitmap.getHeight(), matrix, true);
} catch (Exception e) {
e.printStackTrace();
}
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[android-developers] Re: Reusable code organization with Android Studio
You could use a local maven repo, then write yourself a convenience script that automatically builds and installs everything from wherever you like it to live. Also, learn the semantics of what having -SNAPSHOT in a maven version string means for referencing build artifacts from a repo. If you are the only one working on your app and all of its libraries, then just do whatever you want that's most convenient for you and don't worry about development conventions. Just stick everything in one repo and take control of it yourself. IMO conventions are mostly for teams that need to agree how collaborate well together. Doug On Friday, January 23, 2015 at 10:07:58 AM UTC-8, Nobu Games wrote: I set up a *Maven repository for my library modules* and add the needed modules as dependencies to my app project - Very elegant, but... - Every single tiny change in my library code requires rebuilding and deploying the module. - I also fear that I need to increase the version code / build number every single time so the local Maven cache gets updated? I have no experience with this. :-/ -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] ViewPager pages not drawn
Kostya, I have done that and what I am seeing is the background of the ViewPager, but not my fragments' views. I set a breakpoint so I could go back into the ViewPager, and examining its data structure I find that not only does its mItems array contain my instantiated fragments, but also the mChildren array in the base View contains my fragments' expanded view hierarchies! There is just something that is preventing the views from being drawn, even if I explicitly call invalidate() on the ViewPager. And it still seems that it must have something to do with using the support.v4 fragment support since it all works fine using native fragments. On Friday, December 19, 2014 4:57:43 PM UTC-5, Kostya Vasilyev wrote: Have you tried debugging into ViewPager code? To see if your fragments' views are actually there and how they're laid out? Another thing I often use in cases like this -- is to set the background color of various views to distinct noticeable colors, like pink, cyan, etc. In this case, I'd try the view pager itself, its parent view, and your fragments' views. -- K 2014-12-20 0:30 GMT+03:00 Doug Gordon gord...@gmail.com javascript:: I haven't received any responses on stackoverflow about this, so am giving it a shot here. My app, which is fairly large and complex (hard to post meaningful code) uses as its main view a ViewPager with a FragmentPagerAdapter. Since the minSDK is 14, I originally wrote it to use the native Fragment and related classes (ViewPager from support.v4 and FragmentPagerAdapter from support.v13). This has all been working perfectly for a long time. Recently I decided to build in more compatibility, mainly for themes, by using the appcompat.v7 library. However, using this library required that I use the Fragment and FragmentPagerAdapter, etc. classes from the support.v4 library (meaning that I also had to change my Activity to a FragmentActivity, call getSupportFragmentManager, etc.). Making no more than these changes, my ViewPager comes up as a blank screen; all I see is the ViewPager's background color; my fragments' views are not displayed! What's really strange is that by putting in various breakpoints, I can see that almost everything is working underneath as far as my fragments' life-cycle methods being called, etc. I can swipe back and forth across the screen and the fragments appear to be swapped in and out as expected. It is particularly telling, however, that in various custom views that I have, the onMeasure and onDraw methods are never called! Does anyone have any idea of what would be preventing the ViewPager from actually drawing its views? If I revert the code to use the native fragment support and associated supporting classes, everything shows up, which means that if there is something wrong on my end it must be extremely subtle. (Just to throw in some confusion, there is another activity in the app that also uses a ViewPager with fragments, and it continues to work with either the native or support library classes. (I'm about to throw in the towel and just forget this whole update.)) Doug Gordon -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-d...@googlegroups.com javascript: To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com javascript: For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com javascript:. For more options, visit https://groups.google.com/d/optout. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] ViewPager pages not drawn
SOLVED! After tracing the execution through ViewPager and FragmentPagerAdapter and trying to explain the very strange behavior I was seeing, I eventually discovered that when I wrote my fragments extending Fragment and ListFragment a long time ago, I had added a getView() method that was (inadvertently) overriding the method by that name in the superclass and was returning the wrong view for what the ViewPager was expecting. I removed these methods and everything started working. The only explanation I have for why this code was working OK with the native fragments is that I noticed that the support.v4 fragments enclose the fragment's actual root view as returned by onCreateView with some sort of FrameLayout that they create, and that is what getView returns. The native fragments apparently do not do this, so the view returned by my getView method worked correctly. The only odd thing, and I am not a Java expert, is that I did not precede my getView with @Override and did not notice any error or warning about that. Isn't this required? I know that when I wrote that code that I was not intending to override the superclass. On Saturday, December 20, 2014 1:04:23 PM UTC-5, Kostya Vasilyev wrote: Ok, so the items are there and the views are there. What I would do at this point is check the attributes (data) of those views: - Their positions and sizes - Visibility - Animation state - Translation / scaling - Scroll positions Or I would try to debug into the view pager's onMeasure / onLayout / populate + scrollToItem For this second part, I would perhaps add a button in the layout that calls requestLayout or setCurrentItem on the pager, to trigger as needed. -- K 2014-12-20 17:17 GMT+03:00 Doug Gordon gord...@gmail.com javascript:: Kostya, I have done that and what I am seeing is the background of the ViewPager, but not my fragments' views. I set a breakpoint so I could go back into the ViewPager, and examining its data structure I find that not only does its mItems array contain my instantiated fragments, but also the mChildren array in the base View contains my fragments' expanded view hierarchies! There is just something that is preventing the views from being drawn, even if I explicitly call invalidate() on the ViewPager. And it still seems that it must have something to do with using the support.v4 fragment support since it all works fine using native fragments. On Friday, December 19, 2014 4:57:43 PM UTC-5, Kostya Vasilyev wrote: Have you tried debugging into ViewPager code? To see if your fragments' views are actually there and how they're laid out? Another thing I often use in cases like this -- is to set the background color of various views to distinct noticeable colors, like pink, cyan, etc. In this case, I'd try the view pager itself, its parent view, and your fragments' views. -- K 2014-12-20 0:30 GMT+03:00 Doug Gordon gord...@gmail.com: I haven't received any responses on stackoverflow about this, so am giving it a shot here. My app, which is fairly large and complex (hard to post meaningful code) uses as its main view a ViewPager with a FragmentPagerAdapter. Since the minSDK is 14, I originally wrote it to use the native Fragment and related classes (ViewPager from support.v4 and FragmentPagerAdapter from support.v13). This has all been working perfectly for a long time. Recently I decided to build in more compatibility, mainly for themes, by using the appcompat.v7 library. However, using this library required that I use the Fragment and FragmentPagerAdapter, etc. classes from the support.v4 library (meaning that I also had to change my Activity to a FragmentActivity, call getSupportFragmentManager, etc.). -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: WebView and ConnectivityManager.requestNetwork
It's been a long time since I've been active on it, but I believe you can intercept everything that passes through a url, both what would be loaded by navigation, image, and ajax. Give it a try and implement all the callbacks exposed by webview, log a simple message, and see how it goes. Doug On Saturday, December 13, 2014 1:53:56 PM UTC-8, Krystian Lewandowski wrote: Thank you for the idea. Though, I don't think it will work. What about AJAX, objects, images requests? I assume shouldInterceptRequest isn't called for these. Krystian W dniu sobota, 13 grudnia 2014 22:14:33 UTC+1 użytkownik Doug napisał: You could use a WebViewClient to intercept everything a WebView is trying to fetch and fetch it yourself using whatever API suits your needs. Doug On Friday, December 12, 2014 12:15:35 PM UTC-8, Krystian Lewandowski wrote: Hi, I'm trying to update ConnectivityManager.requestRouteToHost implementation from deprecated one to ConnectivityManager.requestNetwork introduced in Lollipop. It supports Sockets, SocketFactories, URLConnections - this is fine. The only thing missing at the moment is WebView support. Application's requirement is to route WebView.loadUrl requests via specific interface, but I can't see how it could be done with the new API (I can't use setProcessDefaultNetwork). I looked at WebView API but couldn't find anything new that would support changed routing API. Is it supported, am I missing something? Thank you, Krystian -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: WebView and ConnectivityManager.requestNetwork
Did you actually try WebViewClient.shouldInterceptRequest? I'm looking through old code of mine that suggests it will work. Also, you should try searching for WebViewClient shouldInterceptRequest to see what places like StackOverflow say. Doug On Sunday, December 14, 2014 10:39:21 AM UTC-8, Krystian Lewandowski wrote: Hi Doug, I mean, I can get the page and there is onLoadResource I missed last time, but another question is - even if I get a resource, how to inject it? Callbacks, in this case, serve kind of notification purpose there is no way to replace loaded resource (whatever it actually is) or inject custom loader instead. At least at the moment I don't see a solution. Thank you for ideas, Krystian W dniu niedziela, 14 grudnia 2014 18:30:15 UTC+1 użytkownik Doug napisał: It's been a long time since I've been active on it, but I believe you can intercept everything that passes through a url, both what would be loaded by navigation, image, and ajax. Give it a try and implement all the callbacks exposed by webview, log a simple message, and see how it goes. Doug On Saturday, December 13, 2014 1:53:56 PM UTC-8, Krystian Lewandowski wrote: Thank you for the idea. Though, I don't think it will work. What about AJAX, objects, images requests? I assume shouldInterceptRequest isn't called for these. Krystian W dniu sobota, 13 grudnia 2014 22:14:33 UTC+1 użytkownik Doug napisał: You could use a WebViewClient to intercept everything a WebView is trying to fetch and fetch it yourself using whatever API suits your needs. Doug On Friday, December 12, 2014 12:15:35 PM UTC-8, Krystian Lewandowski wrote: Hi, I'm trying to update ConnectivityManager.requestRouteToHost implementation from deprecated one to ConnectivityManager.requestNetwork introduced in Lollipop. It supports Sockets, SocketFactories, URLConnections - this is fine. The only thing missing at the moment is WebView support. Application's requirement is to route WebView.loadUrl requests via specific interface, but I can't see how it could be done with the new API (I can't use setProcessDefaultNetwork). I looked at WebView API but couldn't find anything new that would support changed routing API. Is it supported, am I missing something? Thank you, Krystian -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: WebView and ConnectivityManager.requestNetwork
OK, that's very different than what you first asked. You will have to write shim to connect your app and the webview. The page hosting the webview will have to provide a function to call that makes the necessary adjustments. Then on the app side you call loadUrl with a javascript url to call that function with whatever parameters it needs. Google android webview inject javascript for more details. (Google answers most of your questions if you just ask it.) Doug On Sunday, December 14, 2014 1:45:46 PM UTC-8, Krystian Lewandowski wrote: Hi, the problem is that it is possible to get HTML skeleton (or whatever it is, because we do not control remote side) via specific route with additional implementation in shouldInterceptRequest. It is possible to inject loaded the content via WebView.loadDataWithBaseURL, but that's it. The question is how to inject additional resources to WebView? Thank you, Krystian W dniu niedziela, 14 grudnia 2014 22:33:36 UTC+1 użytkownik Doug napisał: Did you actually try WebViewClient.shouldInterceptRequest? I'm looking through old code of mine that suggests it will work. Also, you should try searching for WebViewClient shouldInterceptRequest to see what places like StackOverflow say. Doug On Sunday, December 14, 2014 10:39:21 AM UTC-8, Krystian Lewandowski wrote: Hi Doug, I mean, I can get the page and there is onLoadResource I missed last time, but another question is - even if I get a resource, how to inject it? Callbacks, in this case, serve kind of notification purpose there is no way to replace loaded resource (whatever it actually is) or inject custom loader instead. At least at the moment I don't see a solution. Thank you for ideas, Krystian W dniu niedziela, 14 grudnia 2014 18:30:15 UTC+1 użytkownik Doug napisał: It's been a long time since I've been active on it, but I believe you can intercept everything that passes through a url, both what would be loaded by navigation, image, and ajax. Give it a try and implement all the callbacks exposed by webview, log a simple message, and see how it goes. Doug On Saturday, December 13, 2014 1:53:56 PM UTC-8, Krystian Lewandowski wrote: Thank you for the idea. Though, I don't think it will work. What about AJAX, objects, images requests? I assume shouldInterceptRequest isn't called for these. Krystian W dniu sobota, 13 grudnia 2014 22:14:33 UTC+1 użytkownik Doug napisał: You could use a WebViewClient to intercept everything a WebView is trying to fetch and fetch it yourself using whatever API suits your needs. Doug On Friday, December 12, 2014 12:15:35 PM UTC-8, Krystian Lewandowski wrote: Hi, I'm trying to update ConnectivityManager.requestRouteToHost implementation from deprecated one to ConnectivityManager.requestNetwork introduced in Lollipop. It supports Sockets, SocketFactories, URLConnections - this is fine. The only thing missing at the moment is WebView support. Application's requirement is to route WebView.loadUrl requests via specific interface, but I can't see how it could be done with the new API (I can't use setProcessDefaultNetwork). I looked at WebView API but couldn't find anything new that would support changed routing API. Is it supported, am I missing something? Thank you, Krystian -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: WebView and ConnectivityManager.requestNetwork
You could use a WebViewClient to intercept everything a WebView is trying to fetch and fetch it yourself using whatever API suits your needs. Doug On Friday, December 12, 2014 12:15:35 PM UTC-8, Krystian Lewandowski wrote: Hi, I'm trying to update ConnectivityManager.requestRouteToHost implementation from deprecated one to ConnectivityManager.requestNetwork introduced in Lollipop. It supports Sockets, SocketFactories, URLConnections - this is fine. The only thing missing at the moment is WebView support. Application's requirement is to route WebView.loadUrl requests via specific interface, but I can't see how it could be done with the new API (I can't use setProcessDefaultNetwork). I looked at WebView API but couldn't find anything new that would support changed routing API. Is it supported, am I missing something? Thank you, Krystian -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Can't update widget preview on Nexus 5/Lollipop
I am modifying a widget product, including an all-new screen layout. The development is going well and I'm about ready to release the update, but am having a very interesting anomaly on my Nexus 5 with the recent Lollipop upgrade. Basically, no matter what I do, the widget preview shown in the launcher's widget screen is the one from the previous version that was installed -- not the updated one in my widget. The old preview graphic does not exist anywhere in my project structure and I even gave the new preview a different name. The really strange thing is that the old image persists even if I completely uninstall the widget from the Apps Manager, then reboot the phone and install the new version. Interestingly, when I press and hold the preview image and begin to drag it onto my home screen, the image changes to the new one as I drag it! Obviously, the launcher has the old image cached somewhere and does not clear it out when the widget is deleted and does not check to see if it has changed when installing the same widget again. The preview on the widget screen does update as expected on my other devices. Anyone have any ideas? Is this a Lollipop bug? Doug Gordon GHCS -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] Simple PagerAdapter does not display views
Yes, and that's what's so frustrating, Kastya. The breakpoints appear to indicate that everything is working, as does the fact that it responds to a swipe. For example, if I start it off by calling ViewPager with setCurrentItem(3), my instantiateItem is called with position=3, followed by position==2 and 4 (the views to either side). When swiping to go to the right, destroyItem is called with position=2 and instantiateItem position=5 as expected. isViewFromObject is called numerous times and I correctly return true or false. Since the data in the adapter never changes, getItemPosition always returns POSITION_UNCHANGED per the specs. I feel like there is something I'm missing that is failing to make my views visible, or else there is some undocumented feature since they do not provide much info for using the base PagerAdapter (all the samples are using FragmentPagerAdapter or FragmentStatePagerAdapter. I am now considering changing over to use fragments instead of simple views since I know that works even though to me it seems less efficient in this case. Thanks for your response in any case! -- Doug On Monday, November 24, 2014 5:09:31 PM UTC-5, Kostya Vasilyev wrote: Did you properly implement the adapter's isViewFromObject? How about getItemPosition? -- K -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Simple PagerAdapter does not display views
I have a fragment in which I want to display a number of similar pages using ViewPager. For some reason I thought that it would be simpler to extend the base PagerAdapter to feed views to the ViewPager. My custom PageAdapter implements instantiateItem by inflating a layout, populating its widgets, and then calling addView against the container view. The containing ViewPager is the view that I return from the onCreateView method of the fragment. The problem is that this is working from a paging point of view, but the screen remains blank. By setting breakpoints, I find that when I swipe across the (blank) screen, my PagerAdapter is called as expected (instantiateView, destroyView, etc.) to return the next/previous view, but nothing is shown -- only the background of the ViewPager. Examining the ViewPager at the breakpoint, the expected instantiated views are in its array of child views. Any clues on where to look? I've implemented a FragmentPagerAdapter elsewhere with no issues, but this does seem like it would be easier, especially since these views have no controls on them (just data). Doug Gordon GHCS Software -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Creating a custom-view with rounded corners
I don't believe that would (or could) be possible. After all, the Android o/s doesn't understand the content of your background image. Those rounded corners just exist as pixels in an image and are not defined mathematically in any way so that the drawing software could clip to them. All that is understood by the system are the rectangular coordinate limits. On Wednesday, November 12, 2014 5:54:02 PM UTC-5, dashman wrote: I've got a view that goes into a listview and would like each to have a rounded corners. For the custom view layout, I set the parent to a RelativeLayout and and set the background to a shape - that sets rounded corners. RelativeLayout xmlns:android=http://schemas.android.com/apk/res/android; android:layout_width=wrap_content android:layout_height=wrap_content android:background=@drawable/bg But the problem is that if inside the view, if i draw to the edges - it doesn't get clipped to the rounded corners. Any way to force that. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Android Studio Editor feature
After years of using Eclipse, I'm making the transition to Android
Studio and am still mystified by some of what I see. The latest
surprise was when I opened a source file to make an edit and saw
that I apparently had hard-coded a string even though I was sure
that I hadn't done so. IOW, what I saw was:
Toast.makeText(mCtx, "Evernote app not found",
Toast.LENGTH_SHORT).show();
However, the text was lightly grayed and highlighted. When I clicked
inside the text, the line changed to what I had actually coded,
i.e.:
Toast.makeText(mCtx, R.string.evernote_err,
Toast.LENGTH_SHORT).show();
Which was more like it! Although this feature is certainly very cool
in some circumstances, there are other times when I'd prefer to just
see what I typed. So what is this feature called? Can I switch it on
and off (once I had collapsed the string to the constant, I could
not get it to revert until I opened the file again)?
--
Doug Gordon
GHCS Software
http://www.ghcssoftware.com
g...@ghcssoftware.com
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[android-developers] Re: Fragment animations using objectAnimator to slide over the previous fragment
I have not thought through this myself thoroughly, but have you considered using a FragmentPagerAdapter with a ViewPager? Doug On Thursday, June 5, 2014 11:41:02 AM UTC-7, Simon Giddings wrote: I have seen the kind of effect I want being demonstrated with the ViewPager http://developer.android.com/training/animation/screen-slide.html#depth-page - but I am using Fragments. Can this kind of transition (just the moving in from the left bit shown at the end) be achieved with fragment animation ? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Share Loader's data between multiple fragment
I would do #2, except don't use setArguments to pass the data in. When the loader callbacks fire, just reach into each fragment instance directly and call a custom method to pass the model in. You might have to check fragment class types and cast to implement this. Personally I would make all the fragments implement an interface such as ModelReceiver which a method receiveModel(Model) so they can get the model object. Doug On Tuesday, June 3, 2014 3:53:41 PM UTC-7, Nathan Barraille wrote: Hello, I have a problem with the Android framework for which I'm not able to find any ideal design solution. I have an activity that contains multiple fragments, all those fragments need to access the same model object. This model object can be loaded from a memory cache, ContentProvider or network, depending on a bunch of parameters. I wanted to use a Loader to load that model object, so that it doesn't have to be loaded again when the activity is recreated, and it can be observed if it changes. All my fragments don't really have a purpose without the model object loaded, as they don't have any data to display. Here are the options I considered: *#1: Have the activity initialize the loader in its onCreate() method, and add the fragments to the activity when the model finishes loading: * *Problem:* It is unsafe to make fragment transactions in a callback method, because the activity state might be paused, according to http://developer.android.com/reference/android/app/LoaderManager.LoaderCallbacks.html#onLoadFinished(android.content.LoaderD, D) *#2: Have the activity initialize the loader and add the fragments in its onCreate() method, and call a custom method on the fragment to set the model* *Problem:* I cannot use the recommended setArguments() method to set the data on the fragment, which means that if my fragment is re-created by the system, it won't have a reference to the model anymore *#3: Have the activity initialize the loader and add the fragments in its onCreate() method, and have the fragments access the model through the activity* *Problem*: The fragments won't know whether or not the model is loaded in the activity, and if I add a method on the fragment for the activity to let it know, I'll have the same problem as #2 *#4: Have all my fragments initialize a loader independently and load the data on their own.* *Problem:* That's really inefficient, especially if the model needs to be loaded from the network I'm kind of thinking now that I could do something like #3, and having an additional call in my fragments' onResume() that checks whether or not the model is set in the activity to set its state, but that seems hacky... Is there a cleaner way of doing this? Thanks! -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: ListView getCount is wrong - how do I reset it?
On Friday, May 16, 2014 11:58:17 AM UTC-7, plnelson wrote:
...In MyListActivity, which is a ListActivity . . .
public static ListView lv; // my ListView in the code
Why is this public and static?
...the data source is an ArrayList called listItems. The first time around
it has 12 items in it; later I clear it and add in 6 items. (see below)
public static ArrayListStringlistItems=new ArrayListString();
Why is this public and static?
... in my adapter, which is a BaseAdapter, my override of getCount() looks
like this. After shrinking listItems to 6 it correctly returns 6.
@Override
public int getCount() {
return listItems.size();
}
... To shrink my dataset to 6 I first do a
listItems.clear();
lv.invalidate(); // my (failed) attempt to get lv to reset its count
Invalidate doesn't do what you think it does. That has to do with the
rendering of the view on screen, not the contents of the adapter that the
ListView knows about.
... and then add in the 6 new items. After adding each item to listItems I
do a notifyDataSetChanged() on the adapter. What I've noticed is that if*
I do an lv.getCount it returns 12, i.e., the value it was before doing the
listItems.clear()* and invalidate(). Why does the ListView still think
it's 12? How do I reset it? Is that why the adapter thinks it's too big?
Try setting a new (non-public, non-static) adapter into the ListView
instead.
Never change the contents of the data in an adapter after you've given it
to the ListView. Make a deep copy of the data before sending it if you
have to.
Doug
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[android-developers] Re: Order of intents delivery
Yes, if they are called from the same thread because they will eventually be processed serially from the queue on the main thread's looper. Doug On Thursday, May 15, 2014 4:49:59 AM UTC-7, Durgadoss Ramanathan wrote: Hi, I have a Service from which I send an intent twice like below. I have only one receiver that receives and processes this intent. mContext.sendBroadcast(intent); ...Do some Ops... ...pack different data into intent... mContext.sendBroadcast(intent); Does android guarantee that the first intent sent is received first ? -- Regards Durgadoss -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
Re: [android-developers] Re: looking for HTML5 and javascript based sdk....
Please, just stop. You are arguing with a fool! On Sunday, May 11, 2014 10:30:22 PM UTC-7, Kristopher Micinski wrote: What are you even talking about: Any JavaScript program is also going to have threads, too. You seem to be making this argument: Java has multiple threads, and that makes the programs slow. It sounds like all of this is coming from a completely uneducated viewpoint on systems design, but there are a number of issues. Please understand, however, that all of the issues in Java carry over (and worse) to JavaScript, you still need multiple threads, you still need a garbage collector. Please also quit citing other Java products as evidence that it has anything to do with Android. Forget Java, android doesn't run Java. Android runs Dalvik. Which is completely different than Java. You can translate anything into Dalvik, people usually translate Java, there's no reason you couldn't also translate anything else. Kris On Mon, May 12, 2014 at 1:22 AM, 李白|字一日 cali...@gmail.com javascript: wrote: the slow comes not just from the loading of java based apps. but the java itself and the bad programming guidance, which uses too many threads and classes which take a lot space. and what even worse is you will sometimes have to do deep inheritance. it adds extra overheads to make itself run. these are ignored while benchmark. i am by no means expert in languages. but it is true that java is slow to what ever products made by java. eclipse, android, j2me, netbeans, idea. none of them are famous for their speed and memory saving. 2014-05-12 11:22 GMT+08:00 bjv bjve...@gmail.com javascript:: Ugh! You don't get it and likely never will. There are so many things wrong with your assumptions/statements in all of these threads. It really isn't worth the time to debunk them all. But for what its worth, there is small overhead with respect to running Java/Dalvik on Android. That said, it is mostly upfront. JS is an interpreted language. Outside of the various ASM-JS experiments, Your html5+JS likely will always be interpreted. In a broad comparison, it will almost always be slower. Your thinking that you get to share all those JS object goodies between various apps/components is in itself a cause for concern. In an effort to remove the Dalvik overhead on Android, the Android guys are now rolling out ART (a variant of llvm) that will transfer most of that overhead to installation time. At that point, Java isn't going to be much different than C++ from an execution perspective. On Sunday, May 11, 2014 1:41:41 PM UTC-5, 李白，字一日 wrote: if it is not, why should you go native with c/c++ based ndk programming? it is surely related to the programming language. javascript 's speed acceleration is also related to the language and its optimization, which is almost always c/c++. i have never experienced the fast feeling of java technology both in desktop or server side. i never experienced fast feeling in android, eclipse, java ee, j2me. am i fooled? eclipse is famous for it's slow and memory consuming, though it is the greatest ide i ever used. javascript based ide, like local compiled c9.io is very fast and responsive, thought it is not that mature. why ? ? ? and if android ui design can be written directly in html + css, it has all the flexibility css and html have now. If you know the web technologies, you should know what i mean. it is meaningless to discuss about the languages' performance, but the trend is that javascript will play a more important role in server side programming, hardware based programming and browser side programming. 2014-05-12 1:03 GMT+08:00 Colin M colin...@gmail.com: I'll ignore the unqualified claim that the slowness of Android is due to Java. It sounds like your complaint is that you can't develop native apps in your preferred language and that you're using an outdated claim about Java to support your desire to change the current language of choice for Android development. The XML based components can all be done via code. Do you have an example of how they are far from flexible? There are many limitations, but you are welcome to write your own custom Views to get around any limitations. I have many of my own complaints about some of the UI system, but I have no reason to believe the current state of things would be faster or more flexible if it were in another language. That's not the thing limiting flexibility or causing speed issues, that's more about the implementations. I've created and seen many fast and fluid and complex UIs on Android, but you sometimes have to do some real work to get them and they don't always drop right out of
[android-developers] Re: Choreographer regularly skipping frames during OpenGL Render
Bear in mind that anything could be causing main thread delays. It could
be your code. It could be other threads in your app's process. It could
be other apps running on the device. It could be Android itself. It could
be any combination of these things. This is to be expected with
multitasking multiuser operating systems and the wide variety of devices
out there and their hardware capabilities.
The Choreographer itself doesn't start complaining about skipped frames in
logcat until after 30 frames have been skipped:
private static final int SKIPPED_FRAME_WARNING_LIMIT =
SystemProperties.getInt(
debug.choreographer.skipwarning, 30);
So maybe you can lighten up your own acceptable threshold for frames
skipped (unless you're actually observing the jank that you're trying to
avoid)?
Doug
On Friday, April 11, 2014 10:37:39 AM UTC-7, Dave Smith wrote:
Hello all -
I am working on an application that is using Choreographer and OpenGL to
render flash patterns on the display. Our GL calls are quite simple,
simply toggling the display back and forth between white and black using
glClearColor() based on the frame time and status of the pattern we want to
apply. The timing of this pattern if very critical, and I am having severe
issues getting consistent behavior out of the timing pulses we received
from Choreographer to do the rendering.
For simplicity sake, I have basically copied the Basic Dream application
in AOSP, so 95% of my code looks exactly like this sample:
https://android.googlesource.com/platform/packages/screensavers/Basic/+/master
Our only change is that, where they call mSquare.draw() inside of
doFrame(), we have another method called drawFrame() that does the
following:
private void drawFrame() {
final boolean nextBit = mPattern[mIndex];
if (nextBit) {
glClearColor(1.0f, 1.0f, 1.0f, 1.0f);
} else {
glClearColor(0.0f, 0.0f, 0.0f, 1.0f);
}
glClear(GL_COLOR_BUFFER_BIT);
return true;
}
However, for the purposes of this discussion, you can see the *exact same
behavior* by simply running the AOSP sample as an application (i.e.
changing the Colors class from a DreamService to a launcher Activity).
The problem is that on a regular basis (at least once per second, often
many times), the debug logging returns that the frame callback took 33ms
(instead of 16ms), and in many cases 50ms+! I can understand skipping a
rare frame here or there, but skipping 3-4 frames at once seems like I'm
missing something big here. Not all devices do this, but high-end devices
like the Nexus 5 and GS4 do. Devices we've tested like the Note 3, GS3,
and Moto X don't seem to do so nearly as often. Example typical logcat
over a period of 30 seconds:
04-11 11:35:43.918 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (49865722 ms) frame 2
04-11 11:35:43.948 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33264161 ms) frame 3
04-11 11:35:43.988 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33233641 ms) frame 4
04-11 11:35:44.018 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33233644 ms) frame 5
04-11 11:35:45.860 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33264161 ms) frame 115
04-11 11:35:46.881 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33233641 ms) frame 175
04-11 11:35:47.692 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33233642 ms) frame 222
04-11 11:35:48.242 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33264160 ms) frame 255
04-11 11:35:49.373 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33233643 ms) frame 322
04-11 11:35:53.908 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33268229 ms) frame 594
04-11 11:35:56.190 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33264161 ms) frame 730
04-11 11:35:56.690 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33233643 ms) frame 759
04-11 11:35:57.751 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (49965416 ms) frame 821
04-11 11:35:57.781 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33164467 ms) frame 822
04-11 11:35:58.952 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33233643 ms) frame 891
04-11 11:36:04.678 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33264161 ms) frame 1235
04-11 11:36:05.919 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33264159 ms) frame 1308
04-11 11:36:07.781 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (33298746 ms) frame 1419
04-11 11:36:07.821 10441-10455/com.android.dreams.basicgl
V/ColorsGLRenderer﹕ JANK! (49800618 ms) frame 1420
04-11 11:36:08.672
[android-developers] Re: Can't create handler inside thread that has not called Looper.prepare()
On Thursday, March 27, 2014 2:04:24 AM UTC-7, Yuvi wrote: You have to create your Handler in separate thread. That's not really true. You can use the Handler constructor that takes a Looper so that its work gets scheduled the thread represented by that Looper. For example, you could create a Handler against the main thread's looper from any other thread like this: new Handler(Looper.getMainLooper()) Now that handler will schedule work on the main thread. Doug -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Image captured from my app is rotated by default
This may not be related to your problem, but I believe that there are basically two ways that the orientation of a JPEG photo is determined. One is simply by the way the actual data in the file is laid out; for example, whether it is stored as 1024x768 or 768x1024. The other determinate is an (optional) datum in the file's metadata that specifies camera orientation and indicates the degrees of rotation. So even if a photo's data is stored as 1024x768, if the orientation data is +90, then it is to be displayed rotated to the right in 768x1024 format. The problem that I've found is that not all devices or image processing/display software seems to use the metadata and, making things worse, may not propagate the data when saving a modified image. So I've had photos from my phone that I've had to rotate in image software to make them look right on my PC, but then I'll do something like upload them to Facebook and they're rotated the wrong way! I might be wrong about this, but it's what I've concluded after playing around with various devices and image processing programs. On Tuesday, March 25, 2014 2:07:37 AM UTC-4, Jags wrote: Hi All, I tried to capture an image and send it to server in my app. I did that using camera intent. the problem is in my samsung galaxy s4 device the image is rotated -90 degree by default. I read around web that it is a problem with the samsung devices. But what is the best solution to it ? if i rotate the image after capture, it becomes heavy image processing in my app. What is the best approach to resolve this ? in phonegap there is something like correctOrientation = true / false what's its counterpart in native code ? thanks and regards jags -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: ContentResolver obtaining java.io.File instead java.io.FileDescriptor
That's because a FileDescriptor doesn't necessarily reference an actual file on a filesystem. It's an abstraction for a stream of bytes that could be coming from a file or some other source (such as stdin, stdout). You're not supposed to know or care what it is, you just read or write it. Doug On Saturday, March 8, 2014 4:51:02 AM UTC-8, jb wrote: Dear All, I am using an intent to invoke a file chooser. Some of the file chooser applications return an Uri of scheme file others return an Uri of scheme content. I need to obtain the last modified date of the chosen object. How do I do that? I didn't find an appropriate API. There is some API that returns a FileDescriptor. But I don't get the last modified date from a FileDescriptor. Any help appreciate. Best Regards -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/d/optout.
[android-developers] Re: Android API for editing video.
Nothing exists for high level editing functions, if you mean operations like copying and moving sections of video. On ICS you have direct access to the low level A/V codecs on the device, but that's a lot of work to manipulate at such a low level for the purpose of editing. Doug On Sunday, February 2, 2014 8:15:25 AM UTC-8, Yatish wrote: Hi , I am looking for android APIs or lib for editing Video. I wan to create an application which will use for editing videos. Please provide your valuable suggestions. Thanks in advance. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Android how to manage the text size for different screen sizes.
How are you measuring your font sizes? If you're not using sp units in the xml from which the text was inflated, you're not doing things the best possible way. Doug On Saturday, February 1, 2014 11:52:00 AM UTC-8, 12169 wrote: Hi, I have an application and text size looks very fine on 4.7 inch device.but when run the application on 7 and 2.3 inch devices it look very bad.what is best way to manage the text size for different screen sizes. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Using CSS Height Attributes in Android App Screen
Try using a Javascript library (such as jQuery) to compute pixels that are understood internally by the WebView rather than trying to convert something from Android's reckoning of pixels. You could have it trigger on window resize to compute and set the size that corresponds to the relative amount of space you want. Doug On Friday, January 24, 2014 3:18:04 PM UTC-8, Cayce wrote: I have an Android app that delivers live text content in various div blocks that have to maintain a relationship with each other. The obvious problem is that using pixel values in attributes renders differently in different devices, such as the Galaxy S4 and the Nexus 7, which both pull from the xxhdpi database, but have different viewport specs. So the best method I've found is to apply percentages instead of pixel values. This works fine on width attributes, but height attributes just collapse. Is there a known workaround for getting height by % to render in the Android app environment? Thanks much. Cayce -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: LinearLayout as child of ScrollView and View weight's are being ignored
It sounds like you maybe want to use different layouts for different screen types rather than depending on sizes of images for different pixel densities. I recommend you read and understand the majority of this document to fully understand how Android deals with different screens and what kind of options you have: http://developer.android.com/guide/practices/screens_support.html Doug On Wednesday, January 1, 2014 7:04:05 AM UTC-8, stanlick wrote: Thanks Doug! This is what I was thinking, but always like a second opinion. I think I'm going to study the the various image size folders drawable-ldpi, drawable-mdpi, etc., and include form-factor appropriate images. It's a shame, Android could not take the highest resolution image and scale it down to fit the other form factors. Heck maybe it does with the scaleType and I'm just confused by the ScrollView overriding my layout decisions. The smallest device, as I see it, is the 240x320 (is that a watch) and it certainly wants smaller pics than my 90 TV! Peace, Scott On Tuesday, December 31, 2013 1:22:03 PM UTC-6, Doug wrote: Weights only make sense when the container of the LinearLayout is constraining the height of it. With its height constrained, LL is then forced to impose heights on all of its children. It will use weights to do this if you specify them. When the container of a LL is a ScrollView, the SV doesn't impose a constraint on the height of the LL, which means the LL doesn't impose a height on its children. It lets them all be as tall as they want. The SV will then allow the user to scroll to see the entire contents of the LL if it overflows the ScrollView's height. If you want everything to be constrained to fit on the screen, don't use a ScrollView. If you want to allow scrolling, then accept that the LL will not impose a height on its children. If you want to constrain the height of just one child in a LL, then give it an explicit height measurement in dp to override its natural height measurement. Doug On Monday, December 30, 2013 2:39:16 PM UTC-8, stanlick wrote: I have a LinearLayout with three views on it TextView, ImageView and TextView. The image was pushing the third TextView off the bottom of the screen, so I added weight to the three views. Now when I place this LinearLayout on a ScrollView, the weights are being ignored! Is there a way to constrain the size of an image without hardcoding pixels? I have tried every android:scaleType available and nothing works quite right. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: ViewPager and ListFragments with onLongClick listener problem
1) It seems like you could figure this out just by setting a few breakpoints and following what happens when the long-press menu is activated. 2) Do you really have a separate copy of code for each fragment that differ only by the FRAGMENT_DAY_NAME constant? This is bad practice for a number of reasons plus the extra work required (if you find a bug, you'll have to make edits in all those modules?). On Friday, December 20, 2013 11:10:44 AM UTC-5, Paul-Peter Tournaris wrote: Hello to everyone! I tried asking this in StackOverflow and had to no luck so you are my last hope! http://stackoverflow.com/questions/20681055/viewpager-and-listfragment-with-onlongclick-strange-behaviour The problem is clearly described in the above link! If you want me to clarify anything more please feel free to tell me and i will answer asap! Thank you in advance! -- *Παύλος-Πέτρος Τουρνάρης* *Android Software Developer* - http://about.me/pavlospt - *http://acschedule.org http://acschedule.org* -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: LinearLayout as child of ScrollView and View weight's are being ignored
Weights only make sense when the container of the LinearLayout is constraining the height of it. With its height constrained, LL is then forced to impose heights on all of its children. It will use weights to do this if you specify them. When the container of a LL is a ScrollView, the SV doesn't impose a constraint on the height of the LL, which means the LL doesn't impose a height on its children. It lets them all be as tall as they want. The SV will then allow the user to scroll to see the entire contents of the LL if it overflows the ScrollView's height. If you want everything to be constrained to fit on the screen, don't use a ScrollView. If you want to allow scrolling, then accept that the LL will not impose a height on its children. If you want to constrain the height of just one child in a LL, then give it an explicit height measurement in dp to override its natural height measurement. Doug On Monday, December 30, 2013 2:39:16 PM UTC-8, stanlick wrote: I have a LinearLayout with three views on it TextView, ImageView and TextView. The image was pushing the third TextView off the bottom of the screen, so I added weight to the three views. Now when I place this LinearLayout on a ScrollView, the weights are being ignored! Is there a way to constrain the size of an image without hardcoding pixels? I have tried every android:scaleType available and nothing works quite right. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: part of text to bold when using AlertDialog.setMessage .
Pass a custom view to AlertDialog with that view containing a TextView with the Spanned being returned from Html.fromtHtml. Don't use the AlertDialog's setMessage since that only accepts regular strings and not Spanned strings with markup. Doug On Sunday, December 15, 2013 11:04:32 PM UTC-8, rahul kaushik wrote: How to set part of text to bold when using AlertDialog.setMessage . I googled and also tried Html.fromHtml(b+getString(R.string.your_message)+/b) but no Help! Please Suggest Thanks RK -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: WeakReference containing callback interface
I don't know what AndroidQuery does for you exactly, but there is a general
rule about how callbacks for asynchronous callbacks can work without
leaking. If you need to hold a reference to anything at all related the
activity or UI that needs to be updated as a result of some async work,
hold only a weak reference to that object, and check it for null before
doing anything with it. Also, don't define you callbacks as non-static
inner classes in your activities, or the callback object will be implicitly
holding a strong ref to the enclosing object (the activity) that will
prevent it from being gc before the work ever ends.
It doesn't make sense for the callbacks themselves to be held as weak
references. The thing performing the work needs to hold the callbacks
strongly since that may be the only reference to them at any moment.
Also, consider Picasso if you're trying to do async image loading.
Doug
On Wednesday, December 11, 2013 6:43:56 AM UTC-8, TheNetStriker wrote:
I've got a question regarding WeakReferences in Android. I'am using
AndroidQuery in my app to load images asynchronous. I've modified the
AndroidQuery source a bit, so that it is also able to send progress
callbacks so that I can update the progressbars in my notifications. The
problem is that the progress object in AndroidQuery is referenced as
a WeakReference so that references to progressbars which are no longer
visible on the UI are getting garbage collected. The problem now that
AndroidQuery works with an ExecutorService and that my callback objects
also are getting garbage collected when the Runnable has to wait for its
execution. I could change the WeakReference to a hard one to fix this
proboem, but then I would have memory leaks when referencing progressbars
directly. Here is how I pass the callback interface to AndroidQuery:
aq.progress(new ProgressCallback() {
@Override
public void setProgress(final int progress) {
//update progressbar
}
@Override
public void setMax(int max, int progress) {
//update progressbar
}
})
Is there a way to pass such a callback object without loosing the
reference when it is referenced inside an WeakReference object?
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Re: [android-developers] Google Drive says Action Bars on the bottom are ok?
Hamburger menu. On Saturday, December 14, 2013 7:17:44 PM UTC-8, Nathan wrote: Somewhat related. What's that thing called on Gmail where they got three bars in the upper left that slides out to become a menu on the left? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Passing the design for tablets checks (dev console optilmization tips)
My app seems to have passed the tests once I added some 7-inch tablet screen shots. I do have some resources in folders with the *-xlarge*attribute, so maybe that's a clue to what they're looking for. On Friday, November 22, 2013 4:20:28 PM UTC-5, b0b wrote: I have an app that I think is tablet friendly yet the dev console optimization tips report: Your layout should make use of the available space on tablets Great. It point to this page to solve it: http://developer.android.com/distribute/googleplay/quality/tablet.html#use-extra-space The problem is that it is a bit vague about what exactly is required to pass this requirement. - does it check for layout-sw600dp and res/layout-sw720dp (my app only has the former) ? - does it check for XML Fragment declaration ? - etc... What is exactly required is not crystal clear... -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] xxHdpi Displays
Having just bought a Nexus 5 (great smartphone, BTW!!), I see that I apparently missed the introduction of these xxhdpi devices (480ppi class). It doesn't appear that all of the Android developers' pages have been fully updated for these screens, but are we officially supposed to now be providing graphic resources in a drawable-xxhdpi resource subfolder? That's about all I need is yet another set of graphics to resize and tweak endlessly! :-( Doug Gordon GHCS Software -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Drawing rapidly into Bitmap from non-UI thread results in Cannot generate texture from bitmap
Generally speaking, anything that updates the UI is supposed to be done on the main thread. What you're doing sounds suspiciously apt to have problems unless something in Android documentation validates your approach. If you want to render stuff into a view off the main thread, consider instead using SurfaceView and its SurfaceHolder. It specifically has provisions for drawing to its Canvas off the main thread. Doug On Tuesday, November 5, 2013 7:09:20 AM UTC-8, Michael Zoech wrote: Hi, In my current application that I'm developing I draw into an android.graphics.Bitmap object from a non-UI thread. This is done from native code via the AndroidBitmap_lockPixels and AndroidBitmap_unlockPixels calls. Every time the drawing has finished, the UI thread gets notified that the Bitmap has changed and the responsible View in the Activity is invalidated and redrawn. All code that accesses the Bitmap is synchronized on the Bitmap. The issue that I'm seeing is that if the rendering is too fast, after some time the View is no longer updated and in the log the following is logged: E/OpenGLRenderer ... Cannot generate texture from bitmap None of the drawing calls produce any errors that anything is wrong. Searching on the internet reveals a few others who had similar issues, but no real solutions or answers for that specific problem. Is it even allowed to draw into the Bitmap from a non-UI thread? Is there a different way to do something similar? I tried using just an IntBuffer and drawing the IntBuffer in the view. While this works, it is also 2x slower than using a Bitmap. Thanks, Michael -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Deposits From Google Wallet Weirdness
According to Bank of America's site, all three payouts did go into my account. I guess the simplest thing would be to just consider it an advance for the next couple of months. At least it wasn't like the guy whose Paypal account got an erroneous balance of 94 quadrillion dollars the other day! On Tuesday, July 16, 2013 5:27:30 PM UTC-4, Nathan wrote: Any one else seen weird things with Google Wallet? Like many of you, I have recently been forced into the highly inferior Google Wallet interface from Google Checkout. So should I be concerned if, say, Google Wallet says that they have deposited the monthly deposit at least three times today? Not that I would complain if I really thought I could just keep it. But only one really arrived in the bank account, and I hope the IRS is not going to ask what I did with the other two. I have already contacted Google Wallet through their form that says Be aware that we cannot respond to every request . . . Is this just another silly thing I should let take care of itself? Note to Google: Our accountants hate you. Nathan -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Overloading of Back Key functionality
Excuse me for a minor rant, but is anyone else bothered by what I call the overloading of the Android Back key? What I mean by this is that pressing it can have two vastly different results: it can return you to an earlier view in the app you are using, or it can effectively exit the app and return to the previous app or home screen. In the original concept (?) of Android, this can work well. For example, you have an app with a View on Map control. Tap it and you throw out an Intent that's picked up by Google Maps. When you're done, you press the Back key and return to the original app. Fine. However -- and for me this is a big however -- many if not most apps are a lot more complex and are more in the nature of standalone programs. When running these apps, the Back key is used to back up to previous viewing states of the app, such as returning from an article to the table of contents. Trouble is, it's not always obvious or easy to remember the hierarchy of the app contents, and I don't know how many times I press the Back key expecting to return to another state of the app and instead find myself looking at the home screen! An example: The user runs a weather app and it displays the weather for her location. She decides to look at the weather in another city and uses some control to select it. At this point it is easy to assume that pressing the Back key will return the app to the previous city's data, but that's not how it works: pressing that key exits the app. My own app has this situation, and even when using it myself I sometimes accidentally exit it instead of going back to an earlier set of details. I notice that some apps have put in an Are you sure you want to exit? dialog that helps prevent this, but it would seem it would be a lot cleaner if this were not necessary. -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Playing HLS (Http Live Stream) using Android VideoView (ICS 4.0.3 and 4.0.4)
VideoView is just a convenience for manipulating a ViewHolder and a MediaPlayer. It's educational to find it's source and study it a bit. MediaPlayer is just a kind of remote control for the native media components deep inside android (e.g. stagefright). The problems you're seeing are likely not a problem with VideoView or MediaPlayer, but the stuff deep inside Android, or maybe even the particular device you're working with. Doug On Monday, April 22, 2013 3:43:43 AM UTC-7, A_User wrote: I am writing an application for playing HLS video stream using android VideoView component. My HLS video stream is variable bit rate video stream varing from 200KBps to 2 Mbps. Issue is that When VideoView switches video stream from 200 KBps to 700 Kbps (Or from any low bitrate stream to high bitrate video stream) my video becomes green or garbage and never recovers, Also sometimes my video gets freeze and I can only hear audio progressing and in this case also video never recovers. Is this known issue with VideoView? Has anybody faced this kind of issues with VideoView. When I test same code on android Jelly bean then every thing works properly. -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Which is more suitable for uploading large files? a service on separate process or ...
I would definitely dedicate a service for things that do persistent work in the background. There is no real advantage to using a separate process unless your upload needs a truckload of memory. Doug On Thursday, April 18, 2013 12:21:47 AM UTC-7, AndroidCompile wrote: Hi, When an application needs to upload many large files, which would be a better solution: 1) Doing this on a separate process (i.e. remote service)? 2) Using a separate thread (or AsyncTask)? Is there a clear and definite answer to this? The application, by the way, is uploading things all the time - usually very small chunks of data. Every now and then it needs to send large files, so I want to do that with a separate mechanism then the one I am using. (BTW for the small chunks I am using a single task thread which works great) -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: error message displays on gingerbread emulator but not icecream sandwich emulator
Binary XML file line #6: Error inflating class fragment
Fragments are not available in GB unless you are using the compatibility
library and using only the fragment objects and activities available
through it.
Doug
On Tuesday, April 16, 2013 2:48:06 PM UTC-7, John Merlino wrote:
I have an app which uses google maps api v2. Works fine in api level
15, but in api level 10 (gingerbread) on the real device it says there
is no support. When I try to run on gingerbread emulator, I get the
following error:
04-16 17:42:00.928: E/AndroidRuntime(363): FATAL EXCEPTION: main
04-16 17:42:00.928: E/AndroidRuntime(363): java.lang.RuntimeException:
Unable to start activity ComponentInfo{com.otl.AndroidRemoteApp1/
com.otl.AndroidRemoteApp.ShowMapActivity}:
android.view.InflateException: Binary XML file line #6: Error
inflating class fragment
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
1647)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:
1663)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.app.ActivityThread.access$1500(ActivityThread.java:117)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.app.ActivityThread$H.handleMessage(ActivityThread.java:931)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.os.Handler.dispatchMessage(Handler.java:99)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.os.Looper.loop(Looper.java:130)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.app.ActivityThread.main(ActivityThread.java:3683)
04-16 17:42:00.928: E/AndroidRuntime(363): at
java.lang.reflect.Method.invokeNative(Native Method)
04-16 17:42:00.928: E/AndroidRuntime(363): at
java.lang.reflect.Method.invoke(Method.java:507)
04-16 17:42:00.928: E/AndroidRuntime(363): at
com.android.internal.os.ZygoteInit
$MethodAndArgsCaller.run(ZygoteInit.java:839)
04-16 17:42:00.928: E/AndroidRuntime(363): at
com.android.internal.os.ZygoteInit.main(ZygoteInit.java:597)
04-16 17:42:00.928: E/AndroidRuntime(363): at
dalvik.system.NativeStart.main(Native Method)
04-16 17:42:00.928: E/AndroidRuntime(363): Caused by:
android.view.InflateException: Binary XML file line #6: Error
inflating class fragment
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:581)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.view.LayoutInflater.rInflate(LayoutInflater.java:623)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.view.LayoutInflater.inflate(LayoutInflater.java:408)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.view.LayoutInflater.inflate(LayoutInflater.java:320)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.view.LayoutInflater.inflate(LayoutInflater.java:276)
04-16 17:42:00.928: E/AndroidRuntime(363): at
com.android.internal.policy.impl.PhoneWindow.setContentView(PhoneWindow.java:
207)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.app.Activity.setContentView(Activity.java:1657)
04-16 17:42:00.928: E/AndroidRuntime(363): at
com.otl.AndroidRemoteApp.ShowMapActivity.onCreate(ShowMapActivity.java:
45)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:
1047)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.app.ActivityThread.performLaunchActivity(ActivityThread.java:
1611)
04-16 17:42:00.928: E/AndroidRuntime(363): ... 11 more
04-16 17:42:00.928: E/AndroidRuntime(363): Caused by:
java.lang.ClassNotFoundException: android.view.fragment in loader
dalvik.system.PathClassLoader[/system/framework/
com.google.android.maps.jar:/data/app/com.otl.AndroidRemoteApp1-2.apk]
04-16 17:42:00.928: E/AndroidRuntime(363): at
dalvik.system.PathClassLoader.findClass(PathClassLoader.java:240)
04-16 17:42:00.928: E/AndroidRuntime(363): at
java.lang.ClassLoader.loadClass(ClassLoader.java:551)
04-16 17:42:00.928: E/AndroidRuntime(363): at
java.lang.ClassLoader.loadClass(ClassLoader.java:511)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.view.LayoutInflater.createView(LayoutInflater.java:471)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.view.LayoutInflater.onCreateView(LayoutInflater.java:549)
04-16 17:42:00.928: E/AndroidRuntime(363): at
com.android.internal.policy.impl.PhoneLayoutInflater.onCreateView(PhoneLayoutInflater.java:
66)
04-16 17:42:00.928: E/AndroidRuntime(363): at
android.view.LayoutInflater.createViewFromTag(LayoutInflater.java:568)
04-16 17:42:00.928: E/AndroidRuntime(363): ... 20 more
Anyone understands
[android-developers] Re: How to detect if music is playing?
http://developer.android.com/reference/android/media/AudioManager.html#isMusicActive() Doug On Saturday, April 13, 2013 5:11:53 AM UTC-7, MobileVisuals wrote: Is there any way to detect if music is playing from players like Spotify and Winamp? -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Adjust ActionBar Tabs Width
If you hide the app title and icon and use the splitActionBar option, you can get up to 4 tabs on the top row on a smartphone-size screen. I think that 4 is about the limit, but if there is not enough room for all the tabs in the top row, Android converts the tabs to a spinner (dropdown) selector. This works OK, but then is not as convenient as having the tabs. On Saturday, February 16, 2013 12:59:25 AM UTC-5, sree wrote: Hi see The above attachment. I implemented ActionBar tabs,But when i add more than 3 tabs it is going back of the screen.so i need to adjust width for each tab.How can i do it. actually i need to implement 5 tabs. Thank you in advance. -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Unexpected Action Bar Behavior
I've just updated my app to use an ActionBar with navigation tabs and the splitActionBarWhenNarrow option, integrated with ViewPager to allow swiping between tabs. The home icon and title in the bar are disabled. It is functionally working on all configurations, but in one case it doesn't act as I would expect. When on a smartphone in portrait config, the Action Bar splits with the tabs in the top bar and the menu/action items in the bottom bar. Of course I can select a page by tapping a tab, and when I swipe from page to page the tab selection highlight (underbar) moves to the selected tab. So far so good. When I turn the device into the landscape position, I now get a single Action Bar at the top. The action and overflow menu icons are at the right, and Android has turned my tabs into a dropdown selector on the left side. This works OK when I use the selector to change pages, but when I swipe from page to page the selector *does not change* to indicate the current tab. My code of course does not change depending on configuration, and I set breakpoints to show that onPageSelected is called, which calls bar.setSelectedNavigationItem, causing onTabSelected to be called in turn. So the expected actions are taking place, but the selector in the dropdown does not change. Any ideas what is going on? (For what it's worth, in landscape position on a tablet, I get yet another variant: a single Action Bar with my tabs on the left and action items on the right. In this case, the tab highlight correctly follows when swiping.) Doug Gordon GHCS Software -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Re: Fragment Transition Animation Crashes
Thanks. I did manage to discover that I needed to specify R.*animator*.fade_in, etc. One of those changes that is easy to miss if you do not always follow every release note, etc. On Monday, January 28, 2013 5:46:37 AM UTC-5, Kostya Vasilyev wrote: The native fragment API uses the new (since 3.0) animators. http://developer.android.com/guide/topics/graphics/prop-animation.html You can see the difference in the source, too: https://android.googlesource.com/platform/frameworks/support/+/refs/heads/master/v4/java/android/support/v4/app/FragmentManager.java 1. Animation anim = AnimationUtils.*loadAnimation*( mActivity, fragment.mNextAnim); https://android.googlesource.com/platform/frameworks/base/+/refs/heads/master/core/java/android/app/FragmentManager.java 1. Animator anim = AnimatorInflater.*loadAnimator*( mActivity, fragment.mNextAnim); -- K On Monday, January 28, 2013 4:14:36 AM UTC+4, Doug Gordon wrote: The following code used to work fine in a previous iteration of my app that was targeted to V11 but used the support library to support fragments, etc., from the minimum V7 and up: Fragment frag = ShowExhibit.ShowExhibitFrag.newInstance(args); FragmentTransaction ft = mFrag.getFragmentManager().beginTransaction(); ft.setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out, android.R.anim.fade_in, android.R.anim.fade_out); ft.replace(mParentId, frag); ft.addToBackStack(null); ft.commit(); Now I'm creating a new version that targets V14 and also has a min of V14, so no need to use the support library for fragments. Running this on the emulator running Android 4.0 (V14), I get the following fatal error on the transition: FATAL EXCEPTION: main java.lang.RuntimeException: Unknown animator name: alpha at android.animation.AnimatorInflater.createAnimatorFromXml(AnimatorInflater.java:129) at android.animation.AnimatorInflater.createAnimatorFromXml(AnimatorInflater.java:93) So what has changed? I can load my previous app version on this same emulator and it runs just fine. None of the code related to this operation has changed in any way. The emulator was created using the standard Galaxy Nexus definition within ADT. -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en --- You received this message because you are subscribed to the Google Groups Android Developers group. To unsubscribe from this group and stop receiving emails from it, send an email to android-developers+unsubscr...@googlegroups.com. For more options, visit https://groups.google.com/groups/opt_out.
[android-developers] Fragment Transition Animation Crashes
The following code used to work fine in a previous iteration of my app that was targeted to V11 but used the support library to support fragments, etc., from the minimum V7 and up: Fragment frag = ShowExhibit.ShowExhibitFrag.newInstance(args); FragmentTransaction ft = mFrag.getFragmentManager().beginTransaction(); ft.setCustomAnimations(android.R.anim.fade_in, android.R.anim.fade_out, android.R.anim.fade_in, android.R.anim.fade_out); ft.replace(mParentId, frag); ft.addToBackStack(null); ft.commit(); Now I'm creating a new version that targets V14 and also has a min of V14, so no need to use the support library for fragments. Running this on the emulator running Android 4.0 (V14), I get the following fatal error on the transition: FATAL EXCEPTION: main java.lang.RuntimeException: Unknown animator name: alpha at android.animation.AnimatorInflater.createAnimatorFromXml(AnimatorInflater.java:129) at android.animation.AnimatorInflater.createAnimatorFromXml(AnimatorInflater.java:93) So what has changed? I can load my previous app version on this same emulator and it runs just fine. None of the code related to this operation has changed in any way. The emulator was created using the standard Galaxy Nexus definition within ADT. -- -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Use unrooted Android device to test web site running on desktop, through usb cable?
The easiest thing is to put them on the same network and point the mobile browser to the desktop's IP address and port that is hosting the web server. Doug On Tuesday, December 25, 2012 4:24:27 PM UTC-5, David Karr wrote: If I have an unrooted Android device, a USB cable, and a laptop, can I run a web or application server on my laptop and test a site running on that server on the Android device? I know I can do some testing with the Android emulator, but I'd like other options. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Kudos to ADT package developers
Having just bought a new PC, I wasn't particularly looking forward to installing my Eclipse/Android development environment yet once again and could only hope to find my old notes on what to install, what settings to make, etc. So I was pleasantly surprised to find that this has been packaged into a single download that almost instantly gets me back to being productive. I think the only thing I needed to do was to tell it where the SDK was and download some earlier platforms. So thanks to whoever it was that did this work -- greatly appreciated! Doug Gordon GHCS Software -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Windows 8
My development PC just took a dive, and most of the decent PCs that I can find locally are now coming with Windows 8. I really don't want to go that route, but if I do, will the Android development environment, i.e., Eclipse and the various SDK tools, run OK on Windows 8? And how about drivers for Android devices? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] FrameLayout in ViewSwitcher doesn't resize
Hi All, I have a problem with a FrameLayout inside a LinearLayout/ViewSwitcher which has been dogging me for days! Any help would be appreciated: In the XML, I have a LinearLayout that defines a background theme, a ViewSwitcher inside that, and a LinearLayout in the first (upper) half of the ViewSwitcher. The upper half of the ViewSwitcher has several TextViews and a FrameLayout which places the frame in the bottom-right-hand corner of the screen. I insert a live image from the camera into that FrameLayout. So far, so good! The 2nd half of the ViewSwitcher only has a single FrameLayout in it, in which I also insert the live camera view. I want this 2nd FrameLayout to fill the screen inside the background - but it doesn't. The first screen and the swiping between the 2 switchable views works OK, but I can't get the single FrameLayout in the 2nd screen to fill the view (the background theme has a full-width button at the top and bottom - this displays OK). The 2nd switched view still has the small video frame in it. I've tried everything I can think of and searched what feels like every single relevant post on SO, but I can't get the 2nd FrameLayout to fill the screen. I've tried putting the 2nd FrameLayout inside it's own LinearLayout, but to no avail. If I move the single FrameLayout to the upper half of the ViewSwitcher (so that it appears first on onCreate), then I get the full-screen video image that I want, but then switching to the 2nd view gives me no video frame at all (but all the text views are there)! Setting android:measureAllChildren=false in the XML and switcher.setMeasureAllChildren(false); in the code makes no difference. Here's the XML... ?xml version=1.0 encoding=utf-8? LinearLayout xmlns:android=http://schemas.android.com/apk/res/android; style=@style/background android:layout_width=match_parent android:layout_height=match_parent android:orientation=vertical ViewSwitcher android:id=@+id/viewswitcher android:layout_width=fill_parent android:layout_height=0dp android:measureAllChildren=false android:layout_weight=1 !-- *** V I E W O N E *** -- LinearLayout android:layout_width=match_parent android:layout_height=match_parent android:layout_marginLeft=1sp android:orientation=horizontal LinearLayout android:layout_width=wrap_content android:layout_height=match_parent android:layout_marginRight=5sp android:orientation=vertical TextView android:id=@+id/txt1 style=@style/normaltext android:layout_width=match_parent android:layout_height=wrap_content android:layout_margin=1sp android:text=@string/str1 / TextView android:id=@+id/txt3 style=@style/normaltext android:layout_width=match_parent android:layout_height=wrap_content android:layout_margin=1sp android:text=@string/str2 / /LinearLayout LinearLayout android:layout_width=100dp android:layout_height=wrap_content android:layout_marginLeft=1sp android:layout_marginRight=1sp android:layout_weight=0.38 android:orientation=vertical TextView android:id=@+id/txt4 style=@style/normaltext android:layout_width=wrap_content android:layout_height=wrap_content android:layout_marginTop=1sp / TextView android:id=@+id/txt5 style=@style/normaltext android:layout_width=wrap_content android:layout_height=wrap_content android:layout_marginTop=1sp android:text=@string/str3 / LinearLayout android:layout_width=match_parent android:layout_height=match_parent FrameLayout android:id=@+id/camimage android:layout_width=match_parent android:layout_height=wrap_content /FrameLayout /LinearLayout /LinearLayout /LinearLayout !-- *** V I E W T W O *** -- LinearLayout android:layout_width=fill_parent android:layout_height=fill_parent android:measureAllChildren=false android:layout_weight=1 FrameLayout
[android-developers] Re: IllegalStateException after ListView's adapter has changed
Jayesh Salvi jayeshsalvi at gmail.com writes:
Hi,This is regarding the exception: java.lang.IllegalStateException: The
content of the adapter has
changed but ListView did not receive a notification. - seen on Android
1.6+This problem has been discussed in the past [1][2][3][4], and I have
followed all the solutions suggested in those threads. However, few of my users
still hit this crash. So I did some source code lookup and have some
questions.Here is the description of what my app is doing:I use a ListView and
populate it with an adapter. The adapter is a direct derivative of BaseAdapter.
I populate the list progressively. As the items are downloaded from network they
get added to the adapter. The fetching of items is done in doInBackground() and
when they are ready to get added to the adapter I invoke publishProgress(), in
the onProgressUpdate() method I add new items one-by-one to the adapter. As soon
as I add the item to the adapter, I invoke notifyDataSetChanged().I believe this
is as per the best practices that Android developers have suggested in above
mentioned threads.Despite this I get crash reports with this exception. They are
rare, but not as rare as ignorable. I myself have hit this crash on my
phone/emulator only 1-2 times in last couple of months. The user reported
crashes are roughly 1 to 3 per day (approx. at least 600 users use the app per
day) (A minority of users may be hitting this crash over and over again)
. This leads me to believe that my adapter update logic is mostly right, but
not full proof. So I dug into the source code of ListView and BaseAdapter.The
exception is thrown because ListView's mItemCount doesn't match the underlying
adapter's item count. It happens in layoutChildren() [ListView.java line 1432]
} else if (mItemCount != mAdapter.getCount()) {
throw new IllegalStateException(The content of the adapter has changed but
+ ListView did not receive a notification. Make sure the
content of
So in order to avoid this from happening mItemCount should be updated as
soon as the adapter has changed its content. So I searched for locations in the
code where mItemCount is updated. I found two locations doing that. In
setAdapter() [ListView.java 431] and in onMeasure() [ListView.java 1033].
Consequently, if I am updating the adapter then either setAdapter() or
onMeasure() should be executed before the comparision in layoutChildren() takes
place, otherwise the exception will be thrown.My question is, is it possible
that my code in onProgressUpdate() that appends to adapter can get executed
between onMeasure() and layoutChildren() of the ListView? AFAIU, all three of
these methods (onProgressUpdate, onMeasure, layoutChildren) run on the same GUI
thread.I call notifyDataSetChanged immediately after I add to adapter in
onProgressUpdate(). I looked into its source code. It calls methods on
DataSetObservable and DataSetObserver. I couldn't find how it could directly
lead to the updating of mItemCount of the ListView, clearly I don't know much of
the internal layout code.Please let me know what you think. I am trying to
understand this mechanism as thoroughly as possible. Thanks in advance.Links:[1]
http://www.mail-archive.com/android-developers at
googlegroups.com/msg60355.html
[2] http://www.mail-archive.com/android-developers at
googlegroups.com/msg65814.html[3]
http://groups.google.com/group/android-developers/browse_thread/thread/77722caa85f87697
[4]
http://groups.google.com/group/android-developers/browse_thread/thread/a451221261cb6a93/2ab5bea015c38437?lnk=gstq=For+Google+about+BaseAdapter+class#2ab5bea015c38437
[5] ListView.java source code I refered to:
http://android.git.kernel.org/?p=platform/frameworks/base.git;a=blob;f=core/java/android/widget/ListView.java;h=7c8151e65132a91aecadd2048fe205bd1c6768a9;hb=HEAD--Jayesh
Hello Jayesh.
Were you able to resolve the issue you were having? I am getting the same
IllegalStateException, but it seems like this happens only when scrolling.
Thanks,
- Doug
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[android-developers] Re: Async pattern required (professionals welcome)
It sounds to me like you are aware of everything you need to know to construct a solution that works for you. Fire up your threads and get to it! To really do this right, though, you need an http fetcher, a disk cache for fetched images, and a memory cache for only the most recently fetched images. And you need to check each one of these in reverse order to get the best performance for a ListView with images that must scroll quickly. Overall, this is not exactly an easy problem to solve. I just shipped a solution for a prominent app I work on, and it took weeks of work and several eyeballs to iron out all the details. Doug On Wednesday, August 29, 2012 12:25:31 PM UTC-7, itai wrote: I’m struggling to figure out a straight forward design for the following scenario: A user clicks a button which results in sending an http request asynchronously to fetch a list of image URL’s (e.g some json collection response). Upon completion, a ListView would need to be populated with the images referenced by the URL’s (e.g each list view item would issue its own async http requests to download and display the image). The image being downloaded will always be the most recent for the proper recycled image. I’m concerned about three situations: 1. Configuration change can happen at any stage which will replace the Activity instance receiving the async results with a new instance, hiding already displayed images – My understanding is that the solution for this is to maintain a some list of all active async tasks on the initiating instance and transfer them all together in onRetainNonConfigurationInstance(), However; my concern here is from the doc’s: “This function is called purely as an optimization, and you must not rely on it being called”, Does this mean that a configuring change can happen and function won’t be called ?@! 2. A different activity comes into the foreground, causing the executing activity to be in pause state while still getting updates from the in-progress async operations – Here I’m not sure if there is any violation (e.g updating an Activity UI in pause state). 3. A different activity comes into the foreground, causing the executing activity to be paused and subsequently killed (the entire process is killed) due to memory pressure - In this case I would want to: a. Know that this is the case before it happens. b. Save to persistent storage all the *new* images if and only If all the downloads have completed, if not, I would like to save all existing images that where present before the whole download process kicked in (if present from a past download). That way if the user navigates back to Activity and the process is recreated, I can load the persisted information and have the user see a snapshot of images either from a previous request or a new request (no interleaving) Initially I was inclined to use AsyncTask’s (1 AsyncTask for getting the Url’s and X others for the images) and use onRetainNonConfigurationInstance, to correct instance binding in case of a configuration change… )I have yet to figure out how to detect the process recycling case from configuration change before hand as there is no defined order between onSaveInstanceState / onRetainNonConfigurationInstance and I don’t want to persist the information at every configuration change). However, after watching Virgil’s google i/o presentation “Building Rest Clients” it seems there is a recommended approach, to perform all the network calls through a service which is supposed to decrease the likelihood of the process from being killed. However, after further investigating this it seems like a major overkill with many pitfalls of its own as it requires implementing a 2 way messaging protocol possible involving queuing messages, with no obvious way on how to handle callbacks in a way that address the concerns outlined above, so I prefer to avoid this risk unless absolutely required. So to sum up, I would really appreciate a professionals feedback on this, as I'm kind of new to android... so if you feel like sharing an *explanation* on how to do this right, great!! If you feel this is work and you can provide a concise and *correct* sample that address all the concerns above, I would be happy compensate, pypal works :) -Itai e: itaitai2003 … the at sign … yahoo .. com p. s No need for actual communication/imaging or persistence logic, simple mock will do, without Fragments – I don’t use them, I don’t need them in my project. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: simulate just onPause() without onStop()
On devices running gingerbread or older (I think), just turn off the screen. Or start an activity whose theme is transparent (or something like that, google it). Sorry to be so imprecise. Doug On Tuesday, August 21, 2012 10:04:03 PM UTC-7, Ubuntu guy wrote: Hello, I'm developing an application and need to quickly test a scenario where my activitiy's onPause() is invoked (without onStop()). As per the documentation, this is a scenario where a dialog is shown on top of my activity. I tried long press of power down button to pop up a dialog, however, it doesn't invoke a onPause() at all. Is there any easy way to simulate this scenario? Thanks in advance ! ! ! -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: VideoView seetTo() takes longer time to start video after pause
seekTo doesn't restart a paused video. Seeking is independent of playback
state.
Doug
On Wednesday, August 22, 2012 3:57:33 AM UTC-7, Ashutosh wrote:
did you get any solution for this issue, I am also facing it.
thanks for help
-ashutosh
On Thursday, February 3, 2011 11:59:54 AM UTC+5:30, kavitha wrote:
Hi All,
In my project I am playing video with VideoView and when incoming call is
there,I pause the video.
But later it takes long time to resume playback.But it resumes to correct
point.
Sometimes it says Video cannot be played while resuming.
Is there any other way to handle pause() and resume() of VideoView.
protected void onPause() {
super.onPause();
pos=videoView.getCurrentPosition();
videoView.pause();
}
protected void onResume() {
super.onResume();
videoView.seekTo(pos);
}
Please help,it is urgent.
Thanks
Kavitha
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[android-developers] Re: Prevent Installation of armv7 neon compiled app on Non Neon Devices
No. Neon instructions are not part of the ABI specification, which is what the device uses to determine which .so to load. You have to detect that at runtime OR you have to make the user make an informed decision about which shared library to use (which drastically decreases usability of your app). Doug On Wednesday, August 22, 2012 2:06:36 AM UTC-7, B.Arunkumar wrote: Hi, What about upload to the Google PlayStore? If we compile the app for armv7 neon support, is it that Google PlayStore will automatically restrict the app from being seen on non-neon devices? Thank you, B.Arunkumar On Aug 22, 1:54 pm, B.Arunkumar awsnetworkrecor...@gmail.com wrote: Hi, We have an app which is compiled for arm-v7 neon with appropriate definitions in Application.mk and Android.mk. Is there any way to prevent installation on Non Neon devices with an appropriate message Cannot install. Currently when I install the application by either debug or run mode, the application installs on the device but when opened. it crashes with an ExceptionInInitializer error. Thank you, B.Arunkumar -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Is there any way to know a view's height and width before it is really shown on screen?
I've always wanted to be able to attach an onSizeChanged listener to an arbitrary view to make this easy, but that doesn't seem to be in the cards for Android. You have to wrap your arbitrary view inside another custom container and have that container pay attention to onSizeChange to be able to respond to that arbitrary view's actual size being known. Doug On Thursday, August 2, 2012 7:21:25 AM UTC-7, Fang wrote: Hi Android Developers, As a request of a function in my app, I need to know a view's height and width before it's really shown on screen. Here I want to know whether it is possible? If yes, then how about the performance? Thanks in advance. Regards, Fang -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: AnimationDrawable: animation can't be started in onResume
I know this post is old but if you are still having trouble, start your AnimationDrawable in the onWindowFocusChanged method. Good luck:) On Tuesday, January 27, 2009 10:36:03 AM UTC-5, G. Blake Meike wrote: There's already been some discussion of this, in various lists and blogs. I finally got an AnimationDrawable to work, but I cannot start it from onResume. I can start it from a timer that onResume starts, or an onClickHandler. I've poked around the source a bit and I can't figure out, specifically, what state the view has to be in, in order for the background AnimationDrawable to start. Can anyone enlighten me? Thanks -blake -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Scanning root of SDcard does not work on 4.1
In JB, they changed the mount point for external storage to
/storage/sdcard0. At least this is the case for the Galaxy Nexus and Nexus
7. So if you're not seeing the directory, double check it. Still,
/mnt/sdcard should be a symlink to /storage/sdcard0.
I'm noticing that you're taking the file object from
Environment.getExternalStorageDirectory, then turning that into a string,
then turning it into a File again. That's not necessarily wrong, but you
might want to reconsider that.
Doug
On Wednesday, July 25, 2012 9:43:07 AM UTC-7, Alessandro Pellizzari wrote:
Hi all,
I am having problems scanning my files on the root of the sdcard, but (it
appears) only on 4.1.
This is my code:
public static void scanAll(NotifyScan target)
{
String source =
Environment.getExternalStorageDirectory().getAbsolutePath()
;
Log.d(SCANDIR, source);
scanDir(new File(source));
}
private void scanDir(File path)
{
for ( File f:path.listFiles() ) {
Log.d(SCAN, f.getAbsolutePath());
}
}
I removed error catching for clarity.
The output is:
SCANDIR /mnt/sdcard
SCAN /mnt/sdcard/LOST.DIR
SCAN /mnt/sdcard/.android-secure
But from the File Explorer in DDMS and from adb shell, I get:
# ls -la /mnt/sdcard
d- root root 2012-07-16 11:42 .android_secure
d---rwxr-x system sdcard_rw 2012-07-16 11:42 Alarms
d---rwxr-x system sdcard_rw 2012-07-16 17:06 MyDirectory
d---rwxr-x system sdcard_rw 2012-07-16 11:42 DCIM
d---rwxr-x system sdcard_rw 2012-07-16 11:42 Download
d---rwxr-x system sdcard_rw 2012-07-16 11:42 LOST.DIR
d---rwxr-x system sdcard_rw 2012-07-16 11:42 Movies
d---rwxr-x system sdcard_rw 2012-07-16 11:42 Music
d---rwxr-x system sdcard_rw 2012-07-16 11:42 Notifications
d---rwxr-x system sdcard_rw 2012-07-16 11:42 Pictures
d---rwxr-x system sdcard_rw 2012-07-16 11:42 Podcasts
d---rwxr-x system sdcard_rw 2012-07-16 11:42 Ringtones
I need to scan every directory on the sdcard and find a certain type of
file. It all worked fine in 2.2 and 2.3.
What can I do?
Thank you very much.
Bye.
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[android-developers] Re: Jelly Bean conversational TTS?
I find that JB's TTS is most definitely more natural and overall much better. You might want to find a way to listen to it next to ICS if you have two devices and see if you can spot the differences. Doug On Saturday, July 21, 2012 8:06:34 PM UTC-7, Josh Burton wrote: Hi, The whats new in Jelly Bean page (http://www.android.com/about/jelly-bean/) states Jelly Bean introduces a new conversational text-to-speech voice in US English, available as both a network engine and an embedded engine via the TTS API. I get the conversation voice in Google Now, but doing Listen to example in the Android voice settings, and using the Google TTS engine in my own apps just gives me the same voice as in ICS. How do we access the new Conversational TTS engine? Thanks Josh -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: WebView / JavaScriptInterface / String []
If you need to return something more complex, you could always generate a serialized JSON data structure from JS using your favorite library, return it as a string, and then parse the results using Android's JSONObject. Doug On Friday, July 13, 2012 6:46:57 AM UTC-7, Pent wrote: I thought that might turn out to be necessary, thanks for confirming. Pent -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: adk 2012 / usb accessory not connecting
Joe, Well, the first thing that irked me was the fact that the board needs a USB driver installed, or OSX won't even recognize the board's presence. This was documented nowhere. I had to hunt it down myself. No problems with Java here. The IDE launches fine and I can load source files into it. It just couldn't compile the clock sample out of the box. It could never find the first ADK include. It's been a while, so I don't remember those details off the top of my head. I did have the board selected in the menu, but I can't imagine that would make much of a difference because the IDE is special for that board. On the ADK web site there is installation step which made no sense to me: Copy the adk-source-download/adk2012/board/library/ADK2 directory and its contents into your sketchbook/libraries/ directory, so that you create a sketchbook/libraries/ADK2 directory. I didn't see anything at all about a sketchbook/libraries directory in the real world. I'm assuming this step was meant to get the ADK libs into a place where they will be used by the clock demo or whatever program you're writing. I tried to make up a bunch of possible locations to put these files, but no dice. Maybe they are assuming the reader has prior Arduino experience, which I do not. I was eventually able to get the clock demo to compile, but after deployment it locked up the hardware. I think it wasn't actually building the ADK libs with the sample code. So I switched to the command line tools. On the command line (using the git source repo), when trying to build and deploy it told me I needed bossac and gave me a url to find it. So I went and got it, but the OSX exe never once recognized the board. The bossac exe that comes with the IDE does work, however, so I wedged that one into the command line build process. The command line build still had troubles finding the ADK headers and sourced needed to build, so I had to copy all those manually into the clock demo source tree, then I was finally able to build and deploy. I'm on OSX Lion on a Mac Mini if that makes any difference. Doug On Tuesday, July 10, 2012 12:07:00 PM UTC-7, Joe wrote: Hey Doug, What problems did you run into using the Mac IDE for the ADK2? I just finished installing the ADK IDE and managed to upload the clock sketch. I'm using a Mac Air with OS X v10.6.8. Couple of things I found that were a little tricky: 1. For some reason, my Mac's Java installation got hosed recently and I had to update to Java 1.6.0_33. After the update my Arduino IDEs (along with the ADK 2012 IDE) started working again. Prior to that update, I couldn't even get the IDE to run, error: No compatible version of Java 1.5* 2. Make sure to you plug into the Computer micro USB port (not the Phone port) 3. Choose the correct serial port in the IDE, *Tools Serial Port* (my Mac Air gave me 6 options) the correct port was /dev/tty.usbserial-XXX 4. Choose the board *Tools Board Google ADK2*, otherwise the sketch won't even compile. On Wednesday, July 4, 2012 11:39:29 PM UTC-7, Doug wrote: This isn't the right place for ADK discussion, but as far as I can tell, there is no place set aside for it! I killed a lot of today trying to get the 2012 ADK to work and was mostly frustrated. I'm on a Mac and I found the IDE installation instructions very much do not work and I could not manipulate it into building and flashing a working image at all. On the command line, I had to jump through hurdles to get the clock demo to build and deploy. In the end, I could not get recommended bossac downloaded from sourceforge to work at all. Eventually I had to bypass the given scripts and reached into the Mac IDE app package to use its bossac to deploy a working image. All things considered, I'm very disappointed in the usability of the tools that were provided for the 2012 ADK (at least for macosx) and I wish I knew where to go to remedy this. Otherwise I pretty much give up now. Doug On Saturday, June 30, 2012 12:28:31 PM UTC-7, michael wrote: Testing the new adk2012 and having a few issues. I have uploaded the usbaccessory sketch, and installed the adk2012 app to the nexus 7. Then I connect the adk nexus with usb, expecting the adk2012 app to be recognized as an appropriate usbaccessory, but it doesn't and nexus reports Connected as a media device USB debugging connected Connected to a USB accessory Another question, how can I run adb from my android device while it is simultaneously connected to my arduino kit? I was optimistic that it would channel through the arduino and proxy to my pc, but that clearly isn't happening :) ... ADB over bluetooth? Thanks, Michael -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com
[android-developers] Re: MediaPlayer.isPlaying() question
If you think the system is stopping your audio temporarily and you need to know about that, you probably instead want to pay attention to the callback defined in AudioManager.OnAudioFocusChangeListener. Doug On Sunday, March 13, 2011 12:24:04 PM UTC-7, Ken H wrote: What I'm really asking is for a way to test if the MediaPlayer was paused. I think my app is being paused by the OS for maybe a notification or something. It drives me up the wall when it just...stops. On Mar 13, 11:25 am, Ken H hunt1...@gmail.com wrote: Will android.media.MediaPlayer.isPlaying() return true if the MediaPlayer is paused? Ken -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: how to replace with in android or java ?
What is the context for needing to do this? Doug On Wednesday, July 4, 2012 2:32:09 AM UTC-7, hari2012 wrote: hi I am working on a project.I have stuck in a problem so please help me asap. how to replace with in android or java ? how to replace two double quotes with single double quotes in android or java ? Thanks in advance, regards, hari -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Method for passing information between Fragments
This pattern is documented. Use the host activity to pass messages between fragments as needed. http://developer.android.com/guide/components/fragments.html Creating event callbacks to the activity Doug On Friday, June 29, 2012 12:55:44 PM UTC-7, EpsilonOrion wrote: I currently have two fragments setup on the same landscape screen. On the left is a Map Fragment, while on the right is a List Fragment. There is a MainActivity that creates the Fragments. Each Fragment has its own Fragment class and Activity Class. I am looking at the best method to allow the ArrayList of GeoPoints created from my ItemizedOverlay to populate the ListFragment by passing the list to the ListFragment when points are created. Then, when a person clicks one of the points in the ListFragment, it sends back a message to the MapFragment that pops up an information bubble for the waypoint in question. Basically, I am looking for the best method to pass this waypoint list (and a return point chosen) message between MapFragment and ListFragment. If it would be better to have a third fragment that sits in the background to hold this information, I would be fine with that since in the future these points will be sent off to another phone. I am sorry if this question has already been asked, but I have not been able to find a simple answer. If you have a reference, I would be happy to look at that. Thanks for the help. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Sample for new MediaCodec API (available in Android 4.1)
There was a talk on this at Google I/O. It's probably your best bet right now. https://developers.google.com/events/io/sessions/gooio2012/117/ Doug On Sunday, July 1, 2012 4:39:16 PM UTC-7, JohnOR wrote: Hi, I just installed Android 4.1 (Jelly Bean) on to Nexus here (using ROM from http://forum.xda-developers.com/showthread.php?t=1737849) and wanted to try out the new MediaCodec APIs. Are there sample apps right now that use this? I've downloaded new SDK but don't see any related samples there. Thanks, John -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: activity looses ArrayList items
What you really need to do is stop the thing that's updating your list
before serializing it, then restart it from the point where it left off
after deserializing it. Or find another way of coordinating this
background work you're doing.
Also, you shouldn't be calling restoreRecents in both onCreate and
onRestoreInstanceState. Pick one or the other.
Doug
On Thursday, July 5, 2012 1:35:07 PM UTC-7, alex b wrote:
I saw the notice about the syncronization of the Vector type, but it
didn't help me find a solution to the problem. What I believe i need to do
is...
lock the ArrayList, Vector whatever
update the ArrayList
unlock the ArrayList
but I don't know how to accomplish this.
On Tuesday, July 3, 2012 1:36:58 PM UTC-7, RichardC wrote:
I don't think Vector is thread safe in the way you expect did you read:
*This class is equivalent to
ArrayListhttp://developer.android.com/reference/java/util/ArrayList.html
with
synchronized operations. This has a performance cost, and the
synchronization is not necessarily meaningful to your application:
synchronizing each call to get, for example, is not equivalent to
synchronizing on the list and iterating over it (which is probably what you
intended). If you do need very highly concurrent access, you should also
consider
CopyOnWriteArrayListhttp://developer.android.com/reference/java/util/concurrent/CopyOnWriteArrayList.html
.
*
http://developer.android.com/reference/java/util/Vector.html
The implication of the above is that your Vector change be changed from
another thread whilst you are trying to serialize it.
On Monday, July 2, 2012 8:52:46 PM UTC+1, alex b wrote:
I have an activity that contains a private Vectormyobject, thread safe
version of ArrayList. The activity adds items to the ArrayList, and in
onSaveInstanceState() I save the data (see code below). The problem is
that it looses items and it seems to have after the GC runs. So what am I
missing?
private static RecentItems _lstRecent;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
restoreRecents(savedInstanceState);
}
@Override
protected void onSaveInstanceState(Bundle outState){
super.onSaveInstanceState(outState);
String s=serializeIt(_lstRecent);
bundle.putString(lstRecent, s);
}
@Override
protected void onRestoreInstanceState(Bundle outState){
super.onSaveInstanceState(outState);
this.restoreRecents(outState);
}
private void restoreRecents(Bundle bundle){
if (bundle!=null){
String s = bundle.getString(lstRecent);
_lstRecent=deserializeIt(s);
}
if (_lstRecent ==null)
_lstRecent=new RecentItems();//unt
}
--
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Re: [android-developers] Separate design based on resolution. Android 2.3
Except in some cases (e.g. with that goofy Galaxy Note device). To quote the guide: *Note:* These minimum screen sizes were not as well defined prior to Android 3.0, so you may encounter some devices that are mis-classified between normal and large. These are also based on the physical resolution of the screen, so may vary across devices—for example a 1024x720 tablet with a system bar actually has a bit less space available to the application due to it being used by the system bar. Hopefully they will get things worked out with the upgrade to ICS. Doug On Tuesday, July 3, 2012 12:43:17 AM UTC-7, Dianne Hackborn wrote: Don't do it based on resolution. Period. Do it in dp units. On Sun, Jun 24, 2012 at 5:28 AM, Dmitriy F midnight@gmail.com wrote: I'm implementing an application which must support multiple screens and provide devices with different layout designs. My task claims that layout design separation must be based on device resolution: for those devices with 1024x800 resolution use design a and for = 1024x800 - design b. I need to say that a and b differ not only in structure(listviews vs. gridviews) but also in resources they incorporate such as images. For instance, splash screens look completely different. I've been looking into multiple screens guidehttp://developer.android.com/guide/practices/screens_support.htmland, indeed, it says that a developer shouldn't base separation of design on resolution, but what if I have to ? At first, I was hoping that size-based separation is the same as resolution but it seems that it's not: there're handsets with high resolution and tablets with low. At this point I can only figure out resolution and use a layout for either of those designs. In each of those layouts I'd like to make references to appropriate design elements(images) like this: /main_480x800.xml ImageView android:layout_width=wrap_content android:layout_height=wrap_content android:src=@drawable/IMAGE_480x800 / /main_HIGH_480x800.xml ImageView android:layout_width=wrap_content android:layout_height=wrap_content android:src=@drawable/IMAGE_480x800 / I hope there's a better way of implementing it - please, give me your suggestions. Best regards, Dmitriy F. midnight@gmail.com -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: MediaPlayer.setNextMediaPlayer
On Tuesday, July 3, 2012 2:42:57 PM UTC-7, b0b wrote: Related to setNextMediaPlayer it would great to have more info such as: - for which codecs will it handle gapless ? Are there restrictions ? Can't imagine there would be a problem with codecs. The issue is that you want a continuous stream of PCM data, going to audio out, not where the (decoded) PCM is coming from. -does it work with http URIs passed to setDataSource() ? If the source prepares in time, I imagine so. Doug -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Can't get AVD to run my noddy app!
Ok, I waited for about 10 minutes the first time around - I would have thought that would be long enough? I have to reinstall it again anyway, so I'll try Java 1.6. I'll also go for Eclipse Helios and have a go with that. Thanks. On Tuesday, 3 July 2012 00:23:42 UTC+1, TreKing wrote: On Wed, Jun 27, 2012 at 11:29 AM, Doug Ponsford wrote: Eclipse says that my app is loding, but it never runs. All I get is the simulator window with ANDROID on the screen and the buttons on the righ-hand side. Is this the first time you've set up the Emulator? It's slow as mol-asses, particularly the first time around. You might just have to wait it out. I also have Java 1.7. You probably want 1.6. - TreKing http://sites.google.com/site/rezmobileapps/treking - Chicago transit tracking app for Android-powered devices -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: adk 2012 / usb accessory not connecting
This isn't the right place for ADK discussion, but as far as I can tell, there is no place set aside for it! I killed a lot of today trying to get the 2012 ADK to work and was mostly frustrated. I'm on a Mac and I found the IDE installation instructions very much do not work and I could not manipulate it into building and flashing a working image at all. On the command line, I had to jump through hurdles to get the clock demo to build and deploy. In the end, I could not get recommended bossac downloaded from sourceforge to work at all. Eventually I had to bypass the given scripts and reached into the Mac IDE app package to use its bossac to deploy a working image. All things considered, I'm very disappointed in the usability of the tools that were provided for the 2012 ADK (at least for macosx) and I wish I knew where to go to remedy this. Otherwise I pretty much give up now. Doug On Saturday, June 30, 2012 12:28:31 PM UTC-7, michael wrote: Testing the new adk2012 and having a few issues. I have uploaded the usbaccessory sketch, and installed the adk2012 app to the nexus 7. Then I connect the adk nexus with usb, expecting the adk2012 app to be recognized as an appropriate usbaccessory, but it doesn't and nexus reports Connected as a media device USB debugging connected Connected to a USB accessory Another question, how can I run adb from my android device while it is simultaneously connected to my arduino kit? I was optimistic that it would channel through the arduino and proxy to my pc, but that clearly isn't happening :) ... ADB over bluetooth? Thanks, Michael -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: how to share the audio played on android device to multiple audio devices
An app can't know exactly what is being played on the device in a general sense, unless it is the app playing the audio, and it is generating the raw PCM to send to an AudioTrack. Doug On Tuesday, June 26, 2012 4:09:04 AM UTC-7, kuldeep wrote: I am planning to implement a simple application that will share the current audio being played on android device, to be played on another android device. It will be a great help if anyone can tell me how to copy the audio out buffer so that I can share same audio track that is running on the first Android device. Please reply to me with all your suggestions and implementation details -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Can't get AVD to run my noddy app!
Hi, I'm a newbie that needs some help on getting the AVD running with my app. I've been developing C code for decades, but I have to admit the Eclipse/AVD setup has me stumped! I'm following the 'HelloWorld' tutorials on this website (and some others) and everything seems to be working OK, up to the point where I try to run it on the simulator. I'm not getting any warnings, the Eclipse build/run output window says that everything is installed OK and the AVD seems to startup and run OK. Eclipse says that my app is loding, but it never runs. All I get is the simulator window with ANDROID on the screen and the buttons on the righ-hand side. I've got Eclipse Indigo and r18 of the Android PlugIn (I tried to install Helios, but the Eclipse website directed me to Indigo!). Is Indigo OK for running the simulator, or do I specifically need Helios? I also have Java 1.7. The API level I have installed is Level 15 (v4.xxx of Android, I think). Don't know if I need a lower version to get my tutorial app to run, but level 15 is the only one I can select when setting up a device in the AVD manager. I've been trying to get this going for days, trying all sorts of switches and buttons, but to no avail. Before I start unistalling everything and reinstalling, is there anything I might be missing? Something that always trips up new starters maybe? Or do I need ot go back to scratch? Any help would be much appreciated. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Compil assembly code for ARM and X86
This is an NDK question, so I suggest taking it to the NDK group, not here. groups.google.com/group/android-ndk Doug On Friday, June 15, 2012 2:26:03 AM UTC-7, WebShaker wrote: Hi. I've just bought an Intel Android smartphone ! I've change My Application.mk to add a plateforme APP_ABI := armeabi armeabi-v7a x86 And that works for Java a C code source. But I have a assembly file too. For ARM I used to compile it whit some options Here is my Android.mk LOCAL_MODULE := engine LOCAL_ARM_MODE := arm LOCAL_CFLAGS := -mfpu=neon -march=armv6t2 -O9 LOCAL_SRC_FILES := engine-arm.s LOCAL_LDLIBS := -lm -llog -ljnigraphics LOCAL_STATIC_LIBRARIES := cpufeatures Well now My problem is that I have another assembly file for the x86 called engine-x68.s What I'd like to do is compiling it with some gcc options -msse2 -m32 -masm=intel So My Android.mk file should be something like LOCAL_MODULE := engine LOCAL_CFLAGS := -msse2 -m32 -masm=intel LOCAL_SRC_FILES := engine-x86.s LOCAL_LDLIBS := -lm -llog -ljnigraphics LOCAL_STATIC_LIBRARIES := cpufeatures Finally my question is. How Can I compile engine-arm.s with the first Android.mk param and compile engine-x68.s with the second one ? My goal is to have only one module (engine) and let Android loading the correct library ! -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Landscape/Portrait and more... an advanced question
No. Orientation is an all or none proposition for all activities that may be showing at any given moment. The best thing to do would be to make all your activities work in all situations that you anticipate and not to lock orientation of anything except, perhaps, if you are writing a game that just needs a single activity to host the game display. Doug On Wednesday, June 13, 2012 2:18:10 AM UTC-7, Mark Cz wrote: Is it possible to show a *Translucent * activity is in portrait while the activity below is in landscape ? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: How do I save a complete webpage displayed in Android's WebView?
I don't think you can do this with documented public APIs. I wouldn't go reaching into that cache folder unless you have a very clear understanding of how that works in all versions of Android that you need to work with. Doug On Wednesday, June 13, 2012 11:55:53 AM UTC-7, VP wrote: I am developing an Android application in which I have a WebView. I want to save the entire webpage loaded in this webview (Html + all resources + images + icons etc) into a folder and zip it and upload it to a server. If you use WebView's saveWebArchivehttp://developer.android.com/reference/android/webkit/WebView.html#saveWebArchive%28java.lang.String%29, then it is saved in archive format. How do I get the Html and images back from this archive? Is there any documentation for the format of this archive? If I use addJavaScriptInterface to get the html as described herehttp://lexandera.com/2009/01/extracting-html-from-a-webview/, I still have to copy the images and other resources from the webview cache dir (/data/data/your app package/cache/webviewCache/). However I did not find webview cache dir (/data/data/your app package/cache/webviewCache/) in Icecream Sandwich. Is there a way to save the entire webpage displayed in webview along with resources in Android? Can somebody please help. I have to ship this feature ASAP. Thanks -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Re: Widget Product Updates
Good info. This actually explains some of the buggy behavior I've seen, not on my own apps, but on various others on my own devices. Especially when I apply an update and then the screen widget stops working with an App not installed error popping up. On Sunday, June 3, 2012 10:57:37 PM UTC-4, Dianne Hackborn wrote: This is an overview I wrote last year on the things you shouldn't change in your app if you want updates to go smoothly: http://android-developers.blogspot.com/2011/06/things-that-cannot-change.html On Sun, Jun 3, 2012 at 4:09 AM, Kostya Vasilyev kmans...@gmail.comwrote: 03.06.2012 14:22, David Ross написал: Sadly, this does not work at all well. Just as when you have a widget and you uninstall the app you get the horrid Problem Loading Widget message, the same thing happens when the user accepts the update from the Play site. Never seen this with my own widgets, or other installed widgets on any of my phones. Now, if the updated package uses a different class name for the same widgets, the home screen won't know this, and the user will get the message you describe. So, pick those class names carefully, and don't change them :) Besides, package updates happen all the time during development (run/debug), and they doesn't cause existing widgets to go sour. In fact, the launcher will update all of them just after the installation is complete to ensure consistency with new code and assets. Also watch out for irritating things like ghost widgets on lower API levels (1.6) when unexpected things happen like there's not enough home screen space for your widget. I keep my own track of the widgets so I can detect and ignore ghost widgets. I've seen ghost widget ids on my Galaxy Nexus with 4.0.4, so don't throw that code away just yet :) -- Kostya Vasilyev -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@** googlegroups.com android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+**unsubscr...@googlegroups.comandroid-developers%2bunsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/**group/android-developers?hl=enhttp://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Widget Product Updates
I'll shortly be releasing my first widget product and am wondering if there are any restrictions as to how the user updates a widget when a new version is posted. I've noticed that if you use the App Manager to delete a widget that's in use without removing it from the home screens, an error message ends up being displayed in that location on the screen (which you then have to remove in the standard way). But if an updated version is installed over the existing version, is the updated widget now displayed as expected on the home screen? Or would the user be forced to remove the existing instances and add back the updated widget? Doug Gordon GHCS Software -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Access denied error while trying to install new API
you guys rule thank you On Wednesday, December 14, 2011 4:26:17 PM UTC-5, Uday (Dave) wrote: Hi, I have installed the android sdk 16 on my Windows7 machine I have installed the Android2.1 API initially without any glitch. But then again when I try to install the other APIs using the SDK manager, it gives me: Downloading SDK Platform Android 2.3.3, API 10, revision 2 File not found: C:\Program Files (x86)\Android\android-sdk\temp \android-2.3.3_r02-linux.zip (Access is denied) Downloading Samples for SDK API 10, revision 1 File not found: C:\Program Files (x86)\Android\android-sdk\temp \samples-2.3.3_r01-linux.zip (Access is denied) Skipping 'Google APIs by Google Inc., Android API 10, revision 2'; it depends on 'SDK Platform Android 2.3.3, API 10, revision 2' which was not installed. Done. Nothing was installed Thanks, Dave -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Stereo AudioRecord
Are there two microphones on the Galaxy Nexus, one for each of the left and right channels? I'm guessing the answer will be no. I don't think there are any phones that have two microphones for stereo recording. Doug On Tuesday, April 24, 2012 2:23:58 AM UTC-7, Akshay Malhotra wrote: I want to capture Stereo signals on my Galaxy Nexus Prime and Galaxy Note phones usibg Audio Record. But when do this the data captured by both left and right microphones is same(bit exact). Is it possible to record audio in STEREO mode on Samasung phones? I am able to do this on motorola and sony phones but not on samsung. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Audio / Performance Issues on ICS / Android 4
Try doing the AudioTrack write in another thread that doesn't have to wait
on the audio processing. I'm thinking producer/consumer kind of
relationship. That way, the producer can be making more audio for the
consumer to write without having to wait on the write to complete. I've
solved problems this way before when having to deal with larger buffers of
audio.
Doug
On Friday, April 27, 2012 2:25:14 AM UTC-7, piezo wrote:
Hello
I have a music (sequencer/synth) app in Android Market. One of its
strengths is that it uses very little resources and plays smoothly
even on the oldest and cheapest devices and only requires Android
version 1.6.
However, since the arrival of ICS, I get more and more complaints
about stuttering playback and a sluggish interface, mainly on Galaxy
Nexus. The app hasn't changed and still works fine on earlier versions
of Android.
I wonder what may have changed.
My app does the audio processing in native code and I suspect the way
data are passed between java and native might be the problem (I still
use AudioTrack to maintain 1.6 compatibility and because it always
worked fine):
public class PlayThread extends Thread
{
public void run()
{
ByteBuffer byteBuffer =
ByteBuffer.allocateDirect(minSize);
byte[] byteArray = new byte[minSize];
android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_URGENT_AUDIO);
int minSize =AudioTrack.getMinBufferSize( 44100,
AudioFormat.CHANNEL_CONFIGURATION_STEREO,
AudioFormat.ENCODING_PCM_16BIT );
myTrack = new AudioTrack( AudioManager.STREAM_MUSIC,
44100, AudioFormat.CHANNEL_CONFIGURATION_STEREO,
AudioFormat.ENCODING_PCM_16BIT,
minSize, AudioTrack.MODE_STREAM);
myTrack.play();
while(1)
{
byteBuffer.position(0);
processNativeAudio(byteBuffer, minSize);
byteBuffer.position(0);
byteBuffer.get(byteArray, 0, minSize);
myTrack.write( puff, 0, minSize );
}
}
}
In the main activity, a new PlayThread is created on startup. The
native function looks like this:
void Java_com_myapp_ processNativeAudio( JNIEnv * env, jobject this,
jobject buffer , jint buflng)
{
jbyte *jbuffer = (*env)-GetDirectBufferAddress(env, buffer);
short *shortBuffer= (short*)(jbuffer);
// processing audio here and writing to shortBuffer
}
Anyone has similar problems or even knows a workaround?
Thank you.
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[android-developers] Getting Unable to Instantiate activity; Component ClassNotFound exception
I'm suddenly unable to run my app due to this error, where the ClassNotFound refers to my main activity class. It happens on my phone as well as in the emulators in various versions. This is an existing stable app that's been around for quite a while, and I haven't made any code changes since the last time it was working a few weeks ago. The only recent changes I've made is that I started a new project in the same workspace and updated the Eclipse components to SDK Tools V19 and SDK Platform Tools V11, plus updating the Eclipse plug-in as indicated. I checked and nothing has changed in my project source directories. Any ideas at all of what suddenly broke here? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Media player no video
Does your app have internet permissions to do streaming (required in ICS)?
Is the video codec supported by your device?
Doug
On Tuesday, March 27, 2012 6:25:56 AM UTC-7, aglasofmilk wrote:
Hi! I have a problem with playing videos through mediaplayer. I have a
sound but no video. I was searching a lot of thread but can't find
solve for my problem. Is is something wrong with the code? Or is it
something else. Here's the code:
public class TestStream1 extends Activity implements Callback{
MediaPlayer mMediaPlayer;
String SrcPath = rtsp://184.72.239.149/vod/
mp4:BigBuckBunny_175k.movhttp://184.72.239.149/vod/mp4:BigBuckBunny_175k.mov;
private SurfaceView mPreview;
private SurfaceHolder holder;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
mPreview = (SurfaceView) findViewById(R.id.myvideoview);
holder = mPreview.getHolder();
holder.addCallback(TestStream1.this);
holder.setType(SurfaceHolder.SURFACE_TYPE_PUSH_BUFFERS);
holder.setFixedSize(400,300);
mMediaPlayer = new MediaPlayer();
try{
mMediaPlayer.setDataSource(SrcPath);
mMediaPlayer.setDisplay(holder);
mMediaPlayer.prepare();
mMediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mMediaPlayer.start();
}catch(Exception e){
Toast .makeText( TestStream1.this, Fail,
Toast.LENGTH_LONG).show();
}
}
}
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[android-developers] Re: use of audio streams
You can use STREAM_MUSIC and also request audio focus to try to gain priority. Doug On Tuesday, March 27, 2012 8:09:26 AM UTC-7, RedBullet wrote: I am building an app that will do TTS to read turn by turn directions for navigation. When I am using a bluetooth headset I turn on SCO and use the STREAM_VOICE_CALLhttp://developer.android.com/reference/android/media/AudioManager.html#STREAM_VOICE_CALL stream. My question is, when I am NOT using bluetooth and just want to use the phone (optionally speaker) which stream do I use? STREAM_MUSIChttp://developer.android.com/reference/android/media/AudioManager.html#STREAM_MUSIC or something else? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] R17: a library project cannot depend on another library project?
How does one downgrade to r16, or any non-latest version of the SDK at any time? Doug On Monday, March 26, 2012 6:35:18 AM UTC-7, Nikolay Elenkov wrote: The best thing you can do is update your projects, or have them updated. If you can't do it right now, use ADT16 for the time being. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: How to read Peoples address in android 4.0 platform
It is not hard to search for. http://developer.android.com/resources/articles/contacts.html Doug On Thursday, March 22, 2012 2:29:33 AM UTC-7, Sandeep Nemuri wrote: i am not able to find any code for reading peoples address from address book in android 4.0 platform . can any 1 help me ?? -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Removing an item from ListView
You can do this the same way you would do anything that changes the data
displayed in a ListView. Make the data change in the adapter that's hooked
up to the ListView, then call notifyDataSetChanged on the adapter. That
will cause the ListView to refresh with the new data in the adapter.
Doug
On Tuesday, March 20, 2012 7:34:00 AM UTC-7, radhakrishna wrote:
@seshu
You mean updating onListItemClick method in
TestListItemsView1Activity :
-
protected void onListItemClick(ListView l, View v, int position,
long id) {
super.onListItemClick(l, v, position, id);
Toast.makeText(this, Click- + String.valueOf(position),
Toast.LENGTH_SHORT).show();
dataValues..remove(position);
}
-
This does not work for me, I need to click remove button to remove
listrow.
My ListView contains [TextView and delete Button], I need to delete
list row, when I click on Delete button, When I click On Delete button
it will not enter into onListItemClick method under
TestListItemsView1Activity class , it will enter only when I select
TextView (Text).
Onlick method for delete button located in EfficientAdapter class.
On Mar 20, 2:20 pm, Seshu s.seshu...@gmail.com wrote:
dataValues..remove(position); will deletes the entire row only...
On Mar 20, 6:58 pm, radhakrishna radhakrishna.kotako...@gmail.com
wrote:
Thank you for your response Seshu, But I would like to delete list
row, when I click on delete button from List view.
On Mar 20, 1:12 pm, Seshu s.seshu...@gmail.com wrote:
Hi radhakrishna,
if u want to delete the list row in the list view.
protected void onListItemClick(ListView l, View v, int position,
long id) {
super.onListItemClick(l, v, position, id);
Toast.makeText(this, Click- + String.valueOf(position),
Toast.LENGTH_SHORT).show();
dataValues..remove(position);
}
Thanks and Regards,
S.Seshu
On Mar 20, 2:41 am, radhakrishna radhakrishna.kotako...@gmail.com
wrote:
Hi All,
I am trying to remove an item from listview,
My Listview contains Text and Delete button in each row,
when I click on delete button its removing Last row from List
view,
not the actual one which I clicked
Here is the Activity Class:
---
--
public class TestListItemsView1Activity extends ListActivity {
/** Called when the activity is first created. */
private EfficientAdapter efficientAdapter;
private static String[] data = new String[] { BBC,
Yahoo, CNN,
Eenadu, Hindu };
private static ListString dataValues =
Arrays.asList(data);
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
requestWindowFeature(Window.FEATURE_NO_TITLE);
setContentView(R.layout.main);
efficientAdapter = new EfficientAdapter(this, dataValues);
setListAdapter(efficientAdapter);
}
@Override
protected void onListItemClick(ListView l, View v, int
position,
long id) {
super.onListItemClick(l, v, position, id);
Toast.makeText(this, Click- + String.valueOf(position),
Toast.LENGTH_SHORT).show();
}
Here is the Adapter class
---
--
public class EfficientAdapter extends BaseAdapter implements
Filterable{
private LayoutInflater mInflater;
private Context context;
final private ListString data= new ArrayListString();
private HashMapString,EfficientAdapter.ViewHolder
holders= new
HashMapString, EfficientAdapter.ViewHolder();
public EfficientAdapter(Context context,ListString data)
{
//super(context, R.layout.main, values);
mInflater = LayoutInflater.from(context);
this.context=context;
this.data.addAll(data);
}
public View getView(final int position, View convertView,
ViewGroup
parent) {
ViewHolder holder;
if(convertView == null){
convertView =
mInflater.inflate(R.layout.adaptor_content, null);
holder = new ViewHolder();
holder.textLine = (TextView
[android-developers] Re: Is it possible to open an Audio Recorder by more than one app using OpenSL?
I think you would have to get all the components that want to share audio recording responsibilities to be coordinated using some other mechanism. Doug On Tuesday, March 20, 2012 2:58:41 AM UTC-7, smichak wrote: OK - so sharing is impossible. My follow-up is therefore: Is it possible to open the audio input device in a manner that would make it forefit or yield the resource if another application requests it? Again - I am asking this in the context of the OpenSL implementation. I have seen that OpenSL objects are assigned priorities and can be made preemptable - I wonder if that's what I'm looking for. On Mar 20, 9:46 am, Doug beafd...@gmail.com wrote: What do you suppose will happen if 5 processes each ask for audio recording with 5 different combinations of recording frequencies and sample sizes? Is Android obliged to resample audio to those requested parameters for each app? What about 10 apps? That's a lot of resampling. This is the reason why only one app can record audio at a time. Doug On Sunday, March 18, 2012 10:14:05 AM UTC-7, smichak wrote: Hi, I am writing an application that runs as a background service recording and analyzing audio samples. I have noticed that it is impossible to use the SDK's AudioRecord class for accessing the microphone simultaneously by more than one application. I was wondering whether it would be possible to do that using the Native Audio API, i.e. OpenSL ES. Can anyone provide insight on why this may or may not work? Micha -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Is it possible to open an Audio Recorder by more than one app using OpenSL?
What do you suppose will happen if 5 processes each ask for audio recording with 5 different combinations of recording frequencies and sample sizes? Is Android obliged to resample audio to those requested parameters for each app? What about 10 apps? That's a lot of resampling. This is the reason why only one app can record audio at a time. Doug On Sunday, March 18, 2012 10:14:05 AM UTC-7, smichak wrote: Hi, I am writing an application that runs as a background service recording and analyzing audio samples. I have noticed that it is impossible to use the SDK's AudioRecord class for accessing the microphone simultaneously by more than one application. I was wondering whether it would be possible to do that using the Native Audio API, i.e. OpenSL ES. Can anyone provide insight on why this may or may not work? Micha -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
Re: [android-developers] Same permission defined in multiple applications
Dianne, when would you recommend using sharedUserId? Also, are these subtleties documented anywhere? Doug On Monday, March 19, 2012 5:57:33 PM UTC-7, Dianne Hackborn wrote: I strongly recommend avoiding sharedUserId. Note that once you publish an app with this, you can never go back. It will have a lot of subtle repercussions on your app that you may not like -- everything from all of the apps with the same shared user ID being batched together in accounting for battery use, to your processes being killed when one of your apps with the shared user ID is updated. On Mon, Mar 19, 2012 at 10:23 AM, Justin Anderson magouyaw...@gmail.comwrote: If you want to share things like preferences between the different apps then you will want to make sure that you also give them the same sharedUserId attribute in the manifest: http://developer.android.com/guide/topics/manifest/manifest-element.html#uid Thanks, Justin Anderson MagouyaWare Developer http://sites.google.com/site/magouyaware On Sun, Mar 18, 2012 at 4:24 PM, Mark Murphy mmur...@commonsware.comwrote: On Sun, Mar 18, 2012 at 5:50 PM, Ryan Reeves rreeves...@gmail.com wrote: I am developing two applications that will share functionality via their activities. I would like to only allow applications signed with the same certificate to start these activities. My plan is to create a custom permission with protection level of signature and apply that permission to exported activities in both applications. Either application can be installed first, so I will define the permission in both application manifests. Are there problems with defining the same permission in multiple applications? I plan to release both applications on the Android market. AFAIK, that should work fine. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _Android Programming Tutorials_ Version 4.1 Available! -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -- Dianne Hackborn Android framework engineer hack...@android.com Note: please don't send private questions to me, as I don't have time to provide private support, and so won't reply to such e-mails. All such questions should be posted on public forums, where I and others can see and answer them. On Monday, March 19, 2012 5:57:33 PM UTC-7, Dianne Hackborn wrote: I strongly recommend avoiding sharedUserId. Note that once you publish an app with this, you can never go back. It will have a lot of subtle repercussions on your app that you may not like -- everything from all of the apps with the same shared user ID being batched together in accounting for battery use, to your processes being killed when one of your apps with the shared user ID is updated. On Mon, Mar 19, 2012 at 10:23 AM, Justin Anderson magouyaw...@gmail.comwrote: If you want to share things like preferences between the different apps then you will want to make sure that you also give them the same sharedUserId attribute in the manifest: http://developer.android.com/guide/topics/manifest/manifest-element.html#uid Thanks, Justin Anderson MagouyaWare Developer http://sites.google.com/site/magouyaware On Sun, Mar 18, 2012 at 4:24 PM, Mark Murphy mmur...@commonsware.comwrote: On Sun, Mar 18, 2012 at 5:50 PM, Ryan Reeves rreeves...@gmail.com wrote: I am developing two applications that will share functionality via their activities. I would like to only allow applications signed with the same certificate to start these activities. My plan is to create a custom permission with protection level of signature and apply that permission to exported activities in both applications. Either application can be installed first, so I will define the permission in both application manifests. Are there problems with defining the same permission in multiple applications? I plan to release both applications on the Android market. AFAIK, that should work fine. -- Mark Murphy (a Commons Guy) http://commonsware.com | http://github.com/commonsguy http://commonsware.com/blog | http://twitter.com/commonsguy _Android Programming Tutorials_ Version
[android-developers] Re: Connect MediaRecorder to MediaPlayer
Generally speaking, video streams need to be seekable in order to play. The exception to this is video streams that were specially constructed to be streamable, which I'm pretty sure you will not get out of a MediaRecorder. Doug On Tuesday, March 13, 2012 2:40:38 PM UTC-7, Jeff wrote: I want to test running both the hardware video encoder and decoder simultaneously. To that end I'm trying to figure out how to connect the output of a MediaRecorder as the input to a MediaPlayer. The only way I could figure out to do this was through DatagramSockets connected through the loopback and ParcelFileDescriptors. I'm having some trouble getting this to work though. Is there a better way to hook up a MediaRecorder to a MediaPlayer? Know of any sample code that exists? Thanks in advance. -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
[android-developers] Re: Application Recycling
In ICS there is a Developer Option called Don't keep activities. If you check it, activities and their fragments will go through a complete cycle of create/destroy, which will test their ability to save and restore their instance states. This is the same as if your app will killed and restored at each activity transition. Older devices and emulators might have a Spare Parts app that can toggle a similar setting. Doug On Wednesday, March 14, 2012 8:51:15 AM UTC-7, Trey wrote: I'm trying to test my application's ability to be restored after my phone reclaims it for memory. I'm unable to find a consistent way to reproduce this behavior. My first questions is: What is the official term for this? Application Recycling doesn't seem to help me find any information online. Once I know what it's called I should be able to find some info, and even search these forums accurately and find an answer; but if anyone is willing to point me in the right direction I would appreciate that as well! Thanks, Trey -- You received this message because you are subscribed to the Google Groups Android Developers group. To post to this group, send email to android-developers@googlegroups.com To unsubscribe from this group, send email to android-developers+unsubscr...@googlegroups.com For more options, visit this group at http://groups.google.com/group/android-developers?hl=en
