[android-developers] Re: Resetting the activity stack
http://developer.android.com/reference/android/content/Intent.html#FLAG_ACTIVITY_CLEAR_TOP On Tue, Sep 22, 2009 at 11:26 AM, tauntz tau...@gmail.com wrote: Hi Activities: A B are activities that once you have navigated away from them, it's not logical that you can get back to them using the back button. C ... X are activities that follow the usual can go back to where you came from flow. App flow: * Launch app from Home - starts A * From A start B * Finish A (removes it from stack) * From B start C * Finish B (removes it from stack) * From C start D * From D start E Once the user has reached E, the activity stack looks like this: C - D - E. Can I somehow reset the whole stack so it starts again at A so it's as the user just launched it from Home (so that C... E are removed from the history stack)? From http://developer.android.com/guide/topics/fundamentals.html#clearstack: In my case alwaysRetainTaskState = true, clearTaskOnLaunch = false, finishOnTaskLaunch = false, because it's logical that the user continues in the same activity where he left - even after long periods of time. Even if alwaysRetainTaskState was false, it would still not address my problem of manually clearing the stack at a random point in time from within the application. There's another way to force activities to be removed from the stack. If an Intent object includes the FLAG_ACTIVITY_CLEAR_TOP flag, and the target task already has an instance of the type of activity that should handle the intent in its stack, all activities above that instance are cleared away so that it stands at the top of the stack and can respond to the intent. - that also doesn't work for me since A isn't in the stack so launching it with that flag won't clear anything from the stack :( Tauno --~--~-~--~~~---~--~~ 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 force soft keyboard to be visible?
super.onCreate(savedInstanceState); InputMethodManager imm = (InputMethodManager)getSystemService(Context.INPUT_METHOD_SERVICE); imm.toggleSoftInput(InputMethodManager.SHOW_FORCED, InputMethodManager.HIDE_IMPLICIT_ONLY); On Thu, Sep 17, 2009 at 11:17 PM, Mike Collins mike.d.coll...@gmail.comwrote: I have a dialog that requires the use to type something. I'd like to force the soft keyboard to be visible when this window starts. I've tried most everything that looks applicable and nothing works. The API demos of SDK 1.5 have a set of windows that have this android:windowSoftInputMode=stateVisible|adjustPan set in the manifest and they don't get the soft keyboard either. Using either the 1.5 emulator or the 1.6 emulator or a 1.5 phone. tia, mike --~--~-~--~~~---~--~~ 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 secure is SharedPreferences?
So basically storing private data on the phone is actually impossible? I must implement a system that needs to store some information at some times in application lifetime. This information must not be deleted / modified in any way because of security issues (the user could trick the system). Is there a way to this on a rooted phone (I'm pretty sure it's not... but the question worths a shot)? Thanks! On Tue, Sep 15, 2009 at 2:39 AM, Romain Guy romain...@google.com wrote: The content of shared preferences is, currently, stored in an XML file in the data partition. Only your app has the permission to look into the directory that contains the XML file but if your user has a rooted phone then all bets are off. On Mon, Sep 14, 2009 at 4:10 PM, bkbonner brian.bon...@paraware.com wrote: We want to store credentials for a user to a web service so the user doesn't have to repeatedly login, but we're concerned about security. We can't store a hash on the database, but we could probably use JCE encryption locally. Is the content in SharedPreferences secured on the Android device? Brian -- Romain Guy Android framework engineer romain...@android.com Note: please don't send private questions to me, as I don't have time to provide private support. 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: Soft keyboard in Fullscreen/extract mode
There's a post on this groups regarding the resize issue. It seems that using the FULL_SCREEN flag actually (as it's name suggests) makes the IME unable to steal a part of the screen for display purposes. And regarding the other problem... try using InputType.TYPE_NULL + InputMethodManger.showSoftInput(..., SHOW_FORCED). From my experiments in a custom edit box I noticed that in landscape the IME is no longer fullscreen (I think it was also documented in the InputMethodService reference page). --~--~-~--~~~---~--~~ 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: buttons hidden
I would recommend using the RelativeLayout instead of the linear layout. You could place them like this: - first label aligned top parent (Band) - second label below first label (Members) - second edit text (Members list) right of second label, aligned top with second label and aligned parent right - first edit text (Band name) right of first label, aligned top with first label, aligned left with second edit text and aligned parent right - Ok button below second label, aligned parent left - Cancel button below second lable, right of Ok button I placed the Band edit box relative to the Members edit box because it's label will always have more pixels so if we want to obtain a nice effect where the edit boxes have the same sizes and fill the usable space. As you can see there are no hard coded dimensions or anything. On Mon, Sep 7, 2009 at 2:12 AM, Mark Murphy mmur...@commonsware.com wrote: Carl wrote: Thanks, I'm such an idiot! The docs say LinearLayout aligns all children in a single direction, I expected the items to wrap around and continue underneath. Ah! Android lacks that sort of FlowLayout like you see in Swing. That'd be a nice project for somebody... -- Mark Murphy (a Commons Guy) http://commonsware.com | http://twitter.com/commonsguy Android Development Wiki: http://wiki.andmob.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 -~--~~~~--~~--~--~---
[android-developers] Re: Stop Soft Keyboard from appearing
I guess Window.setSoftInputMode() with http://developer.android.com/reference/android/view/WindowManager.LayoutParams.html#SOFT_INPUT_STATE_ALWAYS_HIDDENshould do the trick. Haven't tested it though. On Mon, Sep 7, 2009 at 2:19 PM, kalyan simhan kalyansim...@gmail.comwrote: Hi all.. Is there any way to prevent the soft keyboard from appearing through out my application?? I have implemented my custom keyboard and do not want the soft keyboard from appearing on focus of the EditText. is there any way or is setting the input type for each EditText as TYPE_NULL the only way.Kindly help! 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: Activity stack: A B C - press BACK - go to A
Maybe this helps: http://developer.android.com/reference/android/content/Intent.html#FLAG_ACTIVITY_PREVIOUS_IS_TOP On Mon, Aug 31, 2009 at 4:28 AM, tstanly tsai.sta...@gmail.com wrote: can possiable to verify whether B is exist or not? if B exist,so the apps can call finish() to close B, if not,don't call B.finish() (will be error because B is not exist) thanks! On 8月31日, 上午4時11分, Jonas Petersson jonas.peters...@xms.se wrote: fhucho wrote: my activity stack is ABC, in activity C I press back, and return to B, then press back again and go to A. What should I do to return to A directly from C? I guess it depends on the reason for wanting to skip B. I needed exactly this case yesterday and in my case B knows very well that it will not be needed when it starts up C, so B simply calls finish() after that. Solved. Best / Jonas --~--~-~--~~~---~--~~ 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: Advice for speeding up my drawing
Memory allocation can be very perverse especially if you don't know what happens behind the curtain. From what I noticed a simple String allocation implies most of the time an internal char array allocation (pretty obvious) and many more that I can't now recall. The rule is simple: If you can avoid it, do it. Any new in the drawing method is BAD. On Thu, Aug 27, 2009 at 3:37 PM, CG christian.glee...@gmail.com wrote: I have now changed most of the strings to startup initialized char arrays (missing 4) and I am completely baffled by the perfomance gain. I went from a comlpete render loop time on ~350-500 to 170-350 --~--~-~--~~~---~--~~ 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: Advice for speeding up my drawing
If you haven't tried already: 1. Replace the strings that get modified with char[]. Strings are immutable objects so changing one means memory allocation and leaking. 2. Also check the Allocation Tracker for memory leaking. 3. For the constant strings I would use Picture or some bitmap buffer mechanism to store the drawn text and then just place it on the Canvas without overhead. On Wed, Aug 26, 2009 at 12:24 PM, CG christian.glee...@gmail.com wrote: Hi, I am creating an app that show some histograms off your traveling speed in different time periods (histogram for the last minutte, histogram for the last 2 minuttes etc.) I would like to have an animation, and have discovered that drawing everything takes arround 300-400ms. wich is to long for making my animation smooth, the animation itself is quite simple (2 lines and 2 dots). What i draw every frame right now is 20 antialised strings, size 14, in average ~5chars 8 of these strings will change every second. 1 of the string will change with the animation (this will become 5 strings if there is time) the main part of the screen, the one showing the histogram data, consist of a lots of squares wich needs to be updated every second. (450 squares) the presentation is split into 5 frames in the same view (has to be same view as arrows in one frame might point into another frame) invalidating only a part off the screen makes almost no difference (it does becomas a bit faster, but i still execute all my drawing stuff). I have tried to add a flag wheter or not the main part is dirty, but if i don't draw it, it is cleared. I might be missing something here... One possibility could be to render all the mostly static stuff to a bitmap, and then simply draw the bitmap. that would mean 10 strings only had to rendered on orientation change. I think it would make sence since the slowest rutine is the one drawing all the text. (the following is a typical timing for the drawing rutines, accmulated). V/HMMULTIBAR( 352): 0 - Drawing time: 0 ms V/HMMULTIBAR( 352): 1 - Drawing time: 53 ms V/HMMULTIBAR( 352): 2 - Drawing time: 62 ms V/HMMULTIBAR( 352): 3 - Drawing time: 85 ms V/HMMULTIBAR( 352): 4 - Drawing time: 280 ms V/HMMULTIBAR( 352): 5 - Drawing time: 303 ms I would really appreciate comments about wheter or not offscreen rendering is the way to go, or if there is a simpler way. --~--~-~--~~~---~--~~ 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 for a View having more than one Canvas
Use save/restore with MATRIX_SAVE_FLAG flag. Before rotating the canvas you save the current matrix and after the first bitmap is drawn you restore it. On Wed, Aug 26, 2009 at 2:09 PM, Nithin nithin.war...@gmail.com wrote: Hi, I have a View and that has a canvas. I am rotating the canvas, for rotating a bitmap. But after that, I need to draw one more bitmap on the Canvas and, this should not rotate. The second bitmap has to be static. I tried with matrix rotation for bitmap. But its not rotating in the specified co-ordinates. Open for all suggestions Thanks Nithin --~--~-~--~~~---~--~~ 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: setSoftInputMode() and addFlags()
Sure! I built a simple example that looks something like my app layout:
?xml version=1.0 encoding=utf-8?
RelativeLayout android:id=@+id/RelativeLayout01
android:layout_width=fill_parent android:layout_height=fill_parent
xmlns:android=http://schemas.android.com/apk/res/android;
RelativeLayout android:id=@+id/RelativeLayout02
android:layout_height=wrap_content android:layout_width=fill_parent
android:layout_alignParentTop=trueTextView android:text=TextView01
android:id=@+id/TextView01 android:layout_width=wrap_content
android:layout_height=wrap_content
android:layout_centerHorizontal=true/TextView
/RelativeLayout
RelativeLayout android:layout_below=@+id/RelativeLayout02
android:id=@+id/RelativeLayout03 android:layout_width=fill_parent
android:layout_height=fill_parentEditText android:text=EditText01
android:id=@+id/EditText01 android:layout_width=wrap_content
android:layout_height=wrap_content
android:layout_centerInParent=true/EditText
/RelativeLayout
/RelativeLayout
and the onCreate() method:
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
//this.getWindow().addFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.getWindow().setSoftInputMode(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
this.setContentView(R.layout.main);
EditText editor = (EditText)findViewById(R.id.EditText01);
editor.setImeOptions(EditorInfo.IME_ACTION_DONE);
}
Don't use ADJUST_PAN, but ADJUST_RESIZE. That's the one not working :). If
you leave the code as is the window will resize and my EditText will be
centered above the keyboard. If I uncomment that line of code the mode will
reset to ADJUST_PAN even though I explicitly ask for resizing.
Thanks!
On Tue, Aug 18, 2009 at 7:39 PM, Balwinder Kaur (T-Mobile USA)
balwinder.k...@t-mobile.com wrote:
Could you please post your layout xml file to help reproduce the
problem. Meanwhile...
this.getWindow().addFlags
(WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.getWindow().setSoftInputMode
(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_PAN);
did work for me for a vertical layout with a bunch of UI elements in
it.
Balwinder Kaur
Open Source Development Center
·T· · ·Mobile· stick together
The views, opinions and statements in this email are those of the
author solely in their individual capacity, and do not necessarily
represent those of T-Mobile USA, Inc.
On Aug 18, 3:04 am, loctarar andrei.bu...@gmail.com wrote:
Hello!
I've noticed some incompatibility between these two functions.
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
this.getWindow().addFlags
(WindowManager.LayoutParams.FLAG_FULLSCREEN);
this.getWindow().setSoftInputMode
(WindowManager.LayoutParams.SOFT_INPUT_ADJUST_RESIZE);
.
}
Enabling the fullscreen flag seems to disable the soft input adjust
mode. I looked through the source code of the two functions but I
coulnd't find anything that might cause this.
Any suggestions?
Thanks!
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[android-developers] Re: Displaying virtual keyboard
Hello!
AbsListView implements onCreateInputConnection using an EditText, subclass
of TextView :). My question is how should a custom View implement those
methods so one can display the virtual keyboard.
Andrei.
On Fri, Aug 14, 2009 at 6:23 PM, greg sep...@eduneer.com wrote:
I put the following menu option in my application to display the
keyboard:
case R.id.keyboard:
Toast.makeText(this, Back button removes keyboard.,
Toast.LENGTH_SHORT).show();
InputMethodManager imm =
(InputMethodManager)getSystemService
(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(mListView,
InputMethodManager.SHOW_FORCED);
return true;
- - -
I hope that helps.
- Greg
On Aug 14, 8:58 am, loctarar andrei.bu...@gmail.com wrote:
Hello!
I need help with showing the integrated virtual keyboard on-screen. I
extended a View class and I implemented these two methods (most of it
is just stub code; for now I only want to display the keyboard):
@Override
public InputConnection onCreateInputConnection (EditorInfo
outAttrs)
{
BaseInputConnection fic = new BaseInputConnection(this,
true);
outAttrs.actionLabel = null;
outAttrs.hintText = Insert the test text;
outAttrs.initialCapsMode = 0;
outAttrs.initialSelEnd = outAttrs.initialSelStart = -1;
outAttrs.label = Test text;
outAttrs.inputType = InputType.TYPE_CLASS_NUMBER |
InputType.TYPE_NUMBER_FLAG_DECIMAL;
outAttrs.imeOptions = EditorInfo.IME_ACTION_DONE;
return fic;
}
@Override
public boolean onCheckIsTextEditor() {
return true;
}
In the onCreate method of my activity I have :
InputMethodManager imm =
(InputMethodManager)this.getSystemService
(Context.INPUT_METHOD_SERVICE);
imm.showInputMethodPicker();
imm.showSoftInput(editor, InputMethodManager.SHOW_FORCED);
Where editor is an instance of my View. I noticed in the debugger that
my onCreateInputConnection() is executed but after that the keyboard
is not displayed on the screen.
Using the TextView widtget and it's subclasses is not an option.
Thank you!
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[android-developers] Re: Displaying virtual keyboard
Thanks! You have a gift to wake me up from stupidity :). I actually
implemented everything correctly, except that I've made the uber obvious
mistake to call the IM in the onCreate() function of the activity. I guess I
should have used at least onWindowFocusChanged(). Sorry for wasting your
time.
On Fri, Aug 14, 2009 at 7:55 PM, Dianne Hackborn hack...@android.comwrote:
Do the same thing TextView does.
On Fri, Aug 14, 2009 at 8:33 AM, Andrei Bucur andrei.bu...@gmail.comwrote:
Hello!
AbsListView implements onCreateInputConnection using an EditText, subclass
of TextView :). My question is how should a custom View implement those
methods so one can display the virtual keyboard.
Andrei.
On Fri, Aug 14, 2009 at 6:23 PM, greg sep...@eduneer.com wrote:
I put the following menu option in my application to display the
keyboard:
case R.id.keyboard:
Toast.makeText(this, Back button removes keyboard.,
Toast.LENGTH_SHORT).show();
InputMethodManager imm =
(InputMethodManager)getSystemService
(Context.INPUT_METHOD_SERVICE);
imm.showSoftInput(mListView,
InputMethodManager.SHOW_FORCED);
return true;
- - -
I hope that helps.
- Greg
On Aug 14, 8:58 am, loctarar andrei.bu...@gmail.com wrote:
Hello!
I need help with showing the integrated virtual keyboard on-screen. I
extended a View class and I implemented these two methods (most of it
is just stub code; for now I only want to display the keyboard):
@Override
public InputConnection onCreateInputConnection (EditorInfo
outAttrs)
{
BaseInputConnection fic = new BaseInputConnection(this,
true);
outAttrs.actionLabel = null;
outAttrs.hintText = Insert the test text;
outAttrs.initialCapsMode = 0;
outAttrs.initialSelEnd = outAttrs.initialSelStart = -1;
outAttrs.label = Test text;
outAttrs.inputType = InputType.TYPE_CLASS_NUMBER |
InputType.TYPE_NUMBER_FLAG_DECIMAL;
outAttrs.imeOptions = EditorInfo.IME_ACTION_DONE;
return fic;
}
@Override
public boolean onCheckIsTextEditor() {
return true;
}
In the onCreate method of my activity I have :
InputMethodManager imm =
(InputMethodManager)this.getSystemService
(Context.INPUT_METHOD_SERVICE);
imm.showInputMethodPicker();
imm.showSoftInput(editor, InputMethodManager.SHOW_FORCED);
Where editor is an instance of my View. I noticed in the debugger that
my onCreateInputConnection() is executed but after that the keyboard
is not displayed on the screen.
Using the TextView widtget and it's subclasses is not an option.
Thank you!
--
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.
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[android-developers] Re: Incredible bug reading a network stream
InputStream.read(buffer) doesn't guarantee you'll read exactly buffer.length bytes. You must use the value returned by read to actualy see how much was read. On Tue, Aug 11, 2009 at 9:51 PM, Vermouth ggauthier@gmail.com wrote: you have to check how many bytes in.read() actually read Hum... I don't understand ^^ ! Sorry ^^ ! After in.read(buffer);, in stop reading ! And it have read buffer_size bytes ! --~--~-~--~~~---~--~~ 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: add an activity pragmatically in Menifest.xml
This is how I make libraries for Android in Eclipse: 1. I make a new Java project 2. In the project properties, at Java Build Path - Libraries, I replace the the JDK library with the android.jar, found in the Android SDK. From what I tested, this solution seems to work. On Mon, Aug 10, 2009 at 2:54 PM, Atif atif.gul...@gmail.com wrote: Hi, I want to run an activity without adding it in Menifest.xml file. Is it possible? and how? Actually I am developing a component (Library) that other users can plugged with their programs. Best regards, Atif --~--~-~--~~~---~--~~ 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: Folder issues
UPDATE2: I manually uninstalled the package on the phone and then launched again the debugger in eclipse. Now it works :|. If someone has a possible explanation for this please feel free to share. My guess is that sometime in the development process I used the path to create a file (not a folder) and the getDir function doesn't detect this. On Thu, Jul 30, 2009 at 11:07 AM, loctarar andrei.bu...@gmail.com wrote: UPDATE: IT works on the emulator, but not on the device. The OS is up to date. I can't figure out why it's not functioning properly.on the physical device (T-Mobile G1). On Jul 30, 10:41 am, loctarar andrei.bu...@gmail.com wrote: Hello! I have the following piece of code: File recordDir = currentContext.getDir(recordPath, Context.MODE_PRIVATE); ... String[] fileList = recordDir.list(); I surrounded the getDir call with try/catch blocks and seems to succede. However, fileList is null. Also, recordDir.exists() returns true but recordDir.isDirectory() returns false. Is this normal? 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 -~--~~~~--~~--~--~---
