[android-developers] Re: Listing fat-finger-tapped overlays from a MapActivity?
Yep, that works, thanks. I didn't realize that onTouchEvent() was responsible for calling all the overlays onTap()s. onTouched was a typo -- I wasn't at my dev machine when I posted the question. The list owner would be any class that had the list as a data member -- I hadn't written it yet since I had no solution for this problem yet. I appreciate the pointers there. -Mike On Nov 1, 10:48 am, TreKing treking...@gmail.com wrote: On Fri, Oct 29, 2010 at 1:42 PM, Mike Reed waterrock...@gmail.com wrote: If I add to a list in the ItemizedOverlay.onTap for each item clicked (returning false to not handle), the list owner has no way to know when the list is complete (last onTap has been called). Who's the list owner? I tried onTouched in the MapView, There is no onTouched function in MapView, AFAICT. Anybody else have an idea of how to solve this? 1. Create a custom MapView that derives from the base and maintains this list of touched items. 2. Override onTouchEvent, clear your list of touched items, and call super.onTouchEvent which calls onTap for all overlays 3. Each overlay references the MapView that it's in and adds itself to that MapView's list of touched items in it's own onTap. 4. After super.onTouchEvent completes, your MapView has a list of all touched overlays --- -- 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] Listing fat-finger-tapped overlays from a MapActivity?
In a map activity, when the user taps more than one item, I need to produce a list of them, similar to how GoogleEarth works on Android. If I add to a list in the ItemizedOverlay.onTap for each item clicked (returning false to not handle), the list owner has no way to know when the list is complete (last onTap has been called). I tried onTouched in the MapView, but it's called at first touch. My hope was that there would be a callback called if none of the onTap() calls returned true, but there's not. Anybody else have an idea of how to solve this? One thought is to fire up a dialog with onTouch, subscribe as a listener to the onTap calls (set up all the back-end wiring), and have the dialog's list update dynamically as the onTaps are called. I'm not sure though that I can keep a dialog updating like that once it's up. Any other suggestions? Much appreciated, 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] Camera preview runs dark on Motorola i1
Anyone have any experience with this? The barcode app, Yelp, and the Google sample app all show the camera preview as being dark. The camera app that comes with the phone looks normal, but all other apps that use the Camera.startPreview() code show up with what looks like a 50% opacity black surface over the camera image. The top-bar menu is normal brightness, so it's just the camera image that exhibits this. I've tried mucking with different Camera.Parameters options, but very few of these are available in Android 1.5. -- 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: Camera preview runs dark on Motorola i1
Nope, but I did hit that thread while searching. I have started a similar thread in the Moto Support forums as well though. I'm developing and need the camera preview to work on this phone. I figured since it was impacting mainstream apps, some non-developer solutions might exist. No responses in that arena though, so we'll see if anyone has any ideas here... On Sep 8, 3:27 pm, blindfold seeingwithso...@gmail.com wrote: Unless it is you under another alias, there is a similar report athttp://www.satelliteguys.us/dishpointer-com-official-support-forum/22... Regards On Sep 8, 9:47 pm, Mike Reed waterrock...@gmail.com wrote: Anyone have any experience with this? The barcode app, Yelp, and the Google sample app all show the camera preview as being dark. The camera app that comes with the phone looks normal, but all other apps that use the Camera.startPreview() code show up with what looks like a 50% opacity black surface over the camera image. The top-bar menu is normal brightness, so it's just the camera image that exhibits this. I've tried mucking with different Camera.Parameters options, but very few of these are available in Android 1.5. -- 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: Traceview only getting 5 seconds of data
I'm seeing the same thing right now, but it's only 4300ms. One run I got 3700ms, and another was 4000ms. I have no idea why it's missing so much. On Aug 17, 7:17 am, Cleverson clevers...@gmail.com wrote: Hi, I'm usingtraceviewto identify bottlenecks in my app. If I use the emulator, everything works fine. But when the device is used, no matter how long I run the app,traceviewonly gets the initial 5 seconds of my session and nothing more. I also noticed an error message in the console:Traceview: (unknown:10301): GLib-WARNING **: g_set_prgname() called multiple times Have you ever experienced this problem? Any tip? 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: Traceview only getting 5 seconds of data
I found that there is a startMethodTracing call that takes a buffer size, but it gives me an IllegalArgumentException every time. Anyone have an idea why it won't take startMethodTracing(String, 8, 0); ? http://developer.android.com/reference/dalvik/system/VMDebug.html#startMethodTracing(java.lang.String, int, int) On Aug 23, 5:31 pm, Mike Reed waterrock...@gmail.com wrote: I'm seeing the same thing right now, but it's only 4300ms. One run I got 3700ms, and another was 4000ms. I have no idea why it's missing so much. On Aug 17, 7:17 am, Cleverson clevers...@gmail.com wrote: Hi, I'm usingtraceviewto identify bottlenecks in my app. If I use the emulator, everything works fine. But when the device is used, no matter how long I run the app,traceviewonly gets the initial 5 seconds of my session and nothing more. I also noticed an error message in the console:Traceview: (unknown:10301): GLib-WARNING **: g_set_prgname() called multiple times Have you ever experienced this problem? Any tip? 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] onDraw not getting called very often
I have a View in which onDraw() is called once at the beginning, and again about 5 seconds later, then maybe once/minute. Any ideas what could be causing this? I'm expecting draw calls continuously. There is some drawText that is displaying all the time, but it is not updating unless the once/minute call comes along. 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 To unsubscribe, reply using remove me as the subject.
[android-developers] Re: Antialias transformed bitmap ??
antialias will smooth the edges (when drawn at a non-multiple-of-90-degrees) filtering will smooth the sampled colors within the bitmap On Tue, Mar 3, 2009 at 7:59 AM, quakeboy prasna...@gmail.com wrote: How to draw antialiased bitmap along with transformation matrices.. I use matrix to rotate and scale a bitmap and then draw it using canvas.drawBitmap But the bitmap after the transformation looks ugly and aliased. I tried using the paint.antialias(true) and passing it to drawBitmap function. It doesn't seem to work. Should I set anymore parameters ?? --~--~-~--~~~---~--~~ 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 get a region which is not a standard rect area
Ah, that's a bug, null should be allowed. I'll see what can be done there for the future. The clip parameter is mean to be a hint to speedup turning the path into a region by restricting the result to a clipped subset of the path. For your purposes, you can just make a big rectangular region for the clip. The bounds of the path or larger. On Thu, Feb 19, 2009 at 10:22 PM, David Hu vistoda...@gmail.com wrote: Thanks for your reply, Mike. I've tried your method, seems still not work yet. The second parameter of Region.setPath (clip) can't be null. If we use null, there will be an exception happen. So I've tried to use the region I've just constructed or the original rect region, the area is still the ourter standard rect area, not the inclined rect which rotated from a standard rect. Here is my code tip and possible result: //Calculate region top = 150; bottom = top + bmp.getHeight(); //bmp is a bitmap instance left = 200; right = left + bmp.getWidth(); Path p = new Path(); p.addRect(left, top, right, bottom, Path.Direction.CCW); // use Matrix to rotate 30 degrees Matrix mtx = new Matrix(); mtx.setRotate(30); p.transform(mtx); Region rgn = new Region(); (1) //- The application will crash here with an exception here rgn.setPath(p, null); (2) //- The region is the rect area which encircle the rotated rect, not the rotated rect itself rgn.setPath(p, rgn); (3) //- The region is the rect area which encircle the rotated rect, not the rotated rect itself Region clipRgn = new Region(top, bottom, left, right); mRgn2.setPath(p, clipRgn); BTW, I searched in android source code and www.google.com, can't find any usage of this API: public boolean setPath(Path path, Region clip) So now, my question is which clip region should I pass or any other way in order to attain my aim? Hope I've made my aim clearly. BR, -David On Thu, Feb 19, 2009 at 11:27 PM, Mike Reed r...@google.com wrote: You could possibly un-rotate your touch-point by 30 degrees, and then just use the rectangle. However, you can make complex regions by first constructing a Path, and then calling region.setPath(...), which converts the path into a region. Below is pseudo sample code: Path p = new Path(); p.addRect(rect);// this is your rect p.transform(matrix); // construct a matrix and then rotate as you wish region.setPath(p, null); On Thu, Feb 19, 2009 at 5:01 AM, vistoda...@gmail.com wrote: I want to judge whether the touch point(x, y) is in a region or not, the region is from a stardard rect by rotating specified degrees, from example, rotate 30 degrees. There is a class named Region in Android, but as I researched, it just supports standard rect, is there any other way to judge whether a point is in an acclivitous rect? How to do it? Br, -David --~--~-~--~~~---~--~~ 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: SVG files
Sorry, we have no support for SVG in the platform. On Fri, Feb 20, 2009 at 5:18 AM, Alam irshad...@gmail.com wrote: Hi, I've questions w.r.t svg file. 1. Does Android support for svg files. if yes than can we use the svg files in our resource folder while creating applications? 2. Is it possible to rendered svg file? What parsers are needed? Does android provide any such parser? Please let me know about this many questions. Thanks Irshad --~--~-~--~~~---~--~~ 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 display SVG file in Android Application
Sorry, we have no support for SVG in the platform. On Fri, Feb 20, 2009 at 7:57 AM, Alam irshad...@gmail.com wrote: Hi All, I've some question regarding .svg file. 1. Is it possible to display .svg file in our application as an icon or picture or image at background? How can we acheive it? 2. How to render/ manipulate an .svg file on some event firing? 3. Does Android support org.w3c.dom.svg package for parsing svg file? Please let me know soon your suggestion in this regard Thanks Irshad --~--~-~--~~~---~--~~ 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 get a region which is not a standard rect area
By bug, I mean I would like to relax the restriction, and allow you to pass null. I don't know yet when the could get in. Thus you should always (for now) pass in a region as the clip. It can be something large with no downside (i.e. -10,000, 10,000) On Fri, Feb 20, 2009 at 3:57 PM, David Hu vistoda...@gmail.com wrote: Thanks for your explanation, Mike. So, if there is not a bug, I can pass the outer rect as clip region to attain my aim, and: Region rgn = new Region(); (1) //- actual result: The application will crash here with an exception here //--expect result : ? rgn.setPath(p, null); (2) //- actual result: The region is the rect area which encircle the rotated rect, not the rotated rect itself //---expect result :? rgn.setPath(p, rgn); (3) //- actual result: The region is the rect area which encircle the rotated rect, not the rotated rect itself //--- expect result: The region should be a complicate area, inclined rect clipped by the original rect Region clipRgn = new Region(top, bottom, left, right); mRgn2.setPath(p, clipRgn); I'll try to use outer rect region as the clip region later, see what's happen currently. Would you please tell me when this region bug can be fixed? I need try to check if my project can catch up the schedule, otherwise, I have to try to calculate this region by ourselves, it would take more efforts. BR, -David On Fri, Feb 20, 2009 at 10:49 PM, Mike Reed r...@google.com wrote: Ah, that's a bug, null should be allowed. I'll see what can be done there for the future. The clip parameter is mean to be a hint to speedup turning the path into a region by restricting the result to a clipped subset of the path. For your purposes, you can just make a big rectangular region for the clip. The bounds of the path or larger. On Thu, Feb 19, 2009 at 10:22 PM, David Hu vistoda...@gmail.com wrote: Thanks for your reply, Mike. I've tried your method, seems still not work yet. The second parameter of Region.setPath (clip) can't be null. If we use null, there will be an exception happen. So I've tried to use the region I've just constructed or the original rect region, the area is still the ourter standard rect area, not the inclined rect which rotated from a standard rect. Here is my code tip and possible result: //Calculate region top = 150; bottom = top + bmp.getHeight(); //bmp is a bitmap instance left = 200; right = left + bmp.getWidth(); Path p = new Path(); p.addRect(left, top, right, bottom, Path.Direction.CCW); // use Matrix to rotate 30 degrees Matrix mtx = new Matrix(); mtx.setRotate(30); p.transform(mtx); Region rgn = new Region(); (1) //- The application will crash here with an exception here rgn.setPath(p, null); (2) //- The region is the rect area which encircle the rotated rect, not the rotated rect itself rgn.setPath(p, rgn); (3) //- The region is the rect area which encircle the rotated rect, not the rotated rect itself Region clipRgn = new Region(top, bottom, left, right); mRgn2.setPath(p, clipRgn); BTW, I searched in android source code and www.google.com, can't find any usage of this API: public boolean setPath(Path path, Region clip) So now, my question is which clip region should I pass or any other way in order to attain my aim? Hope I've made my aim clearly. BR, -David On Thu, Feb 19, 2009 at 11:27 PM, Mike Reed r...@google.com wrote: You could possibly un-rotate your touch-point by 30 degrees, and then just use the rectangle. However, you can make complex regions by first constructing a Path, and then calling region.setPath(...), which converts the path into a region. Below is pseudo sample code: Path p = new Path(); p.addRect(rect);// this is your rect p.transform(matrix); // construct a matrix and then rotate as you wish region.setPath(p, null); On Thu, Feb 19, 2009 at 5:01 AM, vistoda...@gmail.com wrote: I want to judge whether the touch point(x, y) is in a region or not, the region is from a stardard rect by rotating specified degrees, from example, rotate 30 degrees. There is a class named Region in Android, but as I researched, it just supports standard rect, is there any other way to judge whether a point is in an acclivitous rect? How to do it? Br, -David --~--~-~--~~~---~--~~ 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
[android-developers] Re: How to get a region which is not a standard rect area
You could possibly un-rotate your touch-point by 30 degrees, and then just use the rectangle. However, you can make complex regions by first constructing a Path, and then calling region.setPath(...), which converts the path into a region. Below is pseudo sample code: Path p = new Path(); p.addRect(rect);// this is your rect p.transform(matrix); // construct a matrix and then rotate as you wish region.setPath(p, null); On Thu, Feb 19, 2009 at 5:01 AM, vistoda...@gmail.com wrote: I want to judge whether the touch point(x, y) is in a region or not, the region is from a stardard rect by rotating specified degrees, from example, rotate 30 degrees. There is a class named Region in Android, but as I researched, it just supports standard rect, is there any other way to judge whether a point is in an acclivitous rect? How to do it? Br, -David --~--~-~--~~~---~--~~ 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: Drawables Galore - Optimization Question
As part of a smart Sprite class, you may want to use Canvas.drawBitmapRect(...), which allows you to draw a subset (rect) of a larger bitmap. Thus a group of sprites could reference the same shared large image, each with their own rect which pulls out the part they want to draw. On Wed, Feb 18, 2009 at 6:46 PM, Dianne Hackborn hack...@android.com wrote: The images are just stored as compressed PNGs, so the overhead for having theme separate is the normal PNG overhead. Whether one way or the other will be a win depends on how much they compress in the two different configurations (which depends on the contents of the images) as well as the overhead per image. It shouldn't be too hard to implement your own SpriteDrawable if that is what you want. Take a look at the BitmapDrawable code as a place to start. On Wed, Feb 18, 2009 at 3:30 PM, Noonien Soong nooniensoong2...@gmail.com wrote: What is the best way to store/load/handle a lot of Drawables for my application? Let me explain - Let's say I need to display a lot of small avatar images in my application - Lets say each avatar image has a size of 40x40 and I need to display 32 different sprites. Not all at the same time, but I might have to display 10 of them on the screen at the same time. In addition I need to draw them on a canvas were they walk around or something... My reflex would be to create one PNG with 4x8=32 tiles (size : 320x160). For drawing the sprites on my canvas I would allocate a bitmap for each sprite, load it and then and draw it when I need to (case #1) However, I also need to display the avatars in other views, e.g. in a ListView in a different activity (case #2). For #2, it would be very convenient if I could have them as Drawables. So should I just have 32 pngs in my res/drawable directory ? I feel like it would be great to have something like a SpriteDrawable where I could specify in an xml file which part of a bigger bitmap I want to use as a drawable on its own. Or is it totally fine to have A LOT of small PNGs in my res/drawable folder ? Does the packaging process optimize them anyways? Would be great to get some input on these thoughts... Any comments appreciated. -- 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. 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: how to check whether a char can be or not be displayed normally?
There is no API for that. On Wed, Feb 18, 2009 at 11:13 AM, Paranoia zheny...@gmail.com wrote: basically, the default font droid can not support all of the characters in unicode. how can i find all unsupported characters in droid font? 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 -~--~~~~--~~--~--~---
[android-developers] Re: WebView with Gears:
/data/data/com.android.browser/app_plugins On Thu, Feb 12, 2009 at 5:09 PM, Kumaravel Kandasami kumaravel.kandas...@gmail.com wrote: Any idea on where the browser plugins are stored in the device? I looked into the data/data/com.android.browser/lib, it is empty... (used DDMS FileExplorer). Is there any tools to remote connect from MAC/Windows to Linux Android device... like similar to ssh and basically run an 'ls' command ... it might help in searching quicker. P.S. Plz bear with me...I am thinking out loud here .. Kumar_/|\_ www.saisk.com ku...@saisk.com making a profound difference with knowledge and creativity... On Thu, Feb 12, 2009 at 3:28 PM, Mark Murphy mmur...@commonsware.com wrote: Being that the browser supports there should be somewhere gears plugin in the pile, and can we explicitly associate with the WebView component ? You're welcome to hunt around and try. I haven't looked, personally -- I'm merely echoing statements made by the core Android team made last year, when Ed Burnette reported that Gears was available in the Browser application. -- Mark Murphy (a Commons Guy) http://commonsware.com _The Busy Coder's Guide to Android Development_ Version 2.0 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 -~--~~~~--~~--~--~---
[android-developers] Re: ImageView.setColorFilter and/or LightingColorFilter- how to use them?
The int values are colors (see android.graphics.Color), and each of its 4 bytes (one for each alpha, red, green, blue components) range from 0..255, thus you can multiply/add each component with different coefficients. On Mon, Feb 9, 2009 at 5:52 PM, myIP marckas...@gmail.com wrote: It looks like the int values can range from -255 to 255. I was mislead, the docs has a range of values of 0 to 255. On Feb 9, 5:06 pm, myIP marckas...@gmail.com wrote: How would I be able to adjust a channel (R,G or B) using ImageView.setColorFilter by passing an instance of LightingColorFilter in its construct? For an example, when I create an instance of LightingColorFilter, I adjust the two params that are int values between 0-255. With this instance, I then pass it into setColorFilter. The image always ends up anywhere from being black to blue. How can I adjust the Red or Green channel? LightingColorFilter lcf = new LightingColorFilter( mul, add); imageView.setColorFilter(lcf); --~--~-~--~~~---~--~~ 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: ImageView.setColorFilter and/or LightingColorFilter- how to use them?
If you want to set a component (e.g. RED) to zero, use these mul: 0xFF00 add: 0 If you want to force a component to be full-on (e.g. BLUE), use these mul: 0x add: 0x00FF If you want to slightly darken RED and GREEN, use mul: 0xFFFF add: 0 On Tue, Feb 10, 2009 at 3:41 PM, myIP marckas...@gmail.com wrote: Mike, thanks for the reply. Perhaps I don't fully understand how a value is assigned to a color. Forgive me, I should have said I am perplexed rather then I was mislead. Anyways, I am still perplexed. Can you give an example on how to manipulate a red or green component? Do I need to use android.graphics.Color.rgb() or Color.red(), etc., with LightingColorFilter? I can't seem to get any color other then blue, if I don't use a neg value. On Feb 10, 7:47 am, Mike Reed r...@google.com wrote: The int values are colors (see android.graphics.Color), and each of its 4 bytes (one for each alpha, red, green, blue components) range from 0..255, thus you can multiply/add each component with different coefficients. On Mon, Feb 9, 2009 at 5:52 PM, myIP marckas...@gmail.com wrote: It looks like the int values can range from -255 to 255. I was mislead, the docs has a range of values of 0 to 255. On Feb 9, 5:06 pm, myIP marckas...@gmail.com wrote: How would I be able to adjust a channel (R,G or B) using ImageView.setColorFilter by passing an instance of LightingColorFilter in its construct? For an example, when I create an instance of LightingColorFilter, I adjust the two params that are int values between 0-255. With this instance, I then pass it into setColorFilter. The image always ends up anywhere from being black to blue. How can I adjust the Red or Green channel? LightingColorFilter lcf = new LightingColorFilter( mul, add); imageView.setColorFilter(lcf); --~--~-~--~~~---~--~~ 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: J2ME Sprite equivalent api
I'm not familiar with the J2ME sprite facilities. With android.graphics.canvas/bitmap, you should be able to draw bitmaps with any alpha, any matrix transformation, through any clip. Do you need other facilities? On Fri, Jan 30, 2009 at 5:25 AM, Raja Nagendra Kumar nagendra.r...@gmail.com wrote: Does Android has any equivalent Sprint API of J2ME.. Drawable does not seem to support cliping regions... Regards, Raja Nagendra Kumar. C.T.O www.tejasoft.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 -~--~~~~--~~--~--~---
[android-developers] Re: BitmapShader performance
Performance is bug like any other, so feel free to report them as bugs.
Is your surface 32bit or 16bit? If it is 16bit, then I should
definitely have noticed the SRC mode and made that fast (i.e. memcpy).
On Sun, Feb 8, 2009 at 6:27 PM, Tom Gibara m...@tomgibara.com wrote:
Thanks for the details.
I did think that the disparity might be the result of a unoptimized code
paths, but my understanding of how the Shader integrates into the rendering
implementation as a whole was too sketchy to know whether this would be an
optimization that one might reasonably expect to be feasible.
In my case, the optimization isn't vital since the existing code works
pretty much as well as I need it to - I guess the tiles are large enough
that the overhead of rendering them separately isn't too great.
As a general point, I've run into a few surprises regarding the performance
characteristics of certain graphical operations. One I ran into yesterday
was that drawing an RGB_565 image (without matrix) onto a Canvas obtained
from a SurfaceView became significantly slower after specifying SRC mode on
the Paint object. Given that there is no alpha channel on the src, I would
have expected the SRC mode to have been a noop at worst, and at best trigger
an optimization.
I hesitate to report these as issues because knowing what the expected
performance should be (or can be expected to be) seems very difficult.
Tom.
2009/2/6 Mike Reed r...@google.com
Doh! You've stumbled across a known missing optimization. No promises,
but this has been identified as an future optimization.
The dirty details are that the current code has special optimizations
for a straight drawBitmap when there is no matrix (other than
translate). In addition, there is another optimization for SRC mode
with 32bit bitmaps, where the blitter can literally call memcpy, since
there is no need to inspect the src pixels for blending. Neither of
these optimizations exist (yet) for the bitmapshader code.
On Thu, Feb 5, 2009 at 5:41 PM, tomgibara m...@tomgibara.com wrote:
Romain, Thanks for the explanation.
On Feb 5, 10:26 pm, Romain Guy romain...@google.com wrote:
Tom,
A shader is a per-pixel operation, which lets you apply it to any
shape, respecting alpha blending as well. As such it is not surprising
that your first method is faster.
On Thu, Feb 5, 2009 at 2:08 PM, tomgibara m...@tomgibara.com wrote:
I'm experimenting with tiling a fullscreen image (480x320px ARGB
bitmap) with a square image (160x160px ARGB bitmap). My initial
implementation was naive:
public void render(Canvas canvas) {
final int size = tile.getWidth();
final int w = canvas.getWidth();
final int h = canvas.getHeight();
for (int y = 0; y h; y += size) {
for (int x = 0; x w; x += size) {
canvas.drawBitmap(tile, x, y, null);
}
}
}
Then I remembered that Paint supports a Shader, so I swapped this
implementation for something much more satisfying:
public void render(Canvas canvas) {
canvas.drawPaint(paint);
}
Where paint is initialized outside this method with:
paint = new Paint();
paint.setShader(new BitmapShader(tile, Shader.TileMode.REPEAT,
Shader.TileMode.REPEAT));
I expected that using a BitmapShader would be competitive with the
first implementation and probably slightly faster. But initial
benchmarking indicates that the first method is more than twice as
fast (almost 3x as fast if PorterDuff.Mode.SRC is used for both). I
found that surprising.
Is there a good reason that the BitmapShader is necessarily much
slower, or does it point to a deficiency in its implementation?
--
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
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[android-developers] Re: Graphics question: bilinear interpolation
You may be right. The filter_flag kicks in when drawing a bitmap through a matrix (scale, rotate, etc.). If you are doing arbitrary distortions in java, then I'm afraid the graphics API can't help per-se. On Sun, Feb 8, 2009 at 4:56 PM, j jac...@gmail.com wrote: Hi Dianne, I am afraid I don't understand how that would help. I am implementing an image distortion algorithm. It takes in a source Bitmap and output a distorted Bitmap. Can you elaborate? On Feb 7, 8:15 pm, Dianne Hackborn hack...@android.com wrote: How about this: http://code.google.com/android/reference/android/graphics/Paint.html#... On Sat, Feb 7, 2009 at 8:06 PM, j jac...@gmail.com wrote: Is there an Android API for performing bilinear interpolation? I discovered that my own interpolation implementation is extremely slow running on the G1 so it's pretty useless. -- 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. 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: Read/write JPEG metadata (e.g. in EXIF format)
Gotcha. Sounds like a reasonable request for some future release. On Sun, Feb 8, 2009 at 2:25 AM, GiladH gila...@gmail.com wrote: Hi Mike, The standard staff - creation date and location, original rotation etc. The thing is, and correct me if you see otherwise, that while an imported jpeg get added to the MediaStore, all this info stored in its metadata is not converted to MediaStore metadata, hence the need for direct jpeg acces. GiladH --~--~-~--~~~---~--~~ 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: Color filter modes and transparent colors
Sounds like a bug: DARKEN should not alter a fully transparent pixel. I will try to reproduce. Does SRC_OVER + some shade of gray work for you, like 0x)? On Sat, Feb 7, 2009 at 2:01 AM, Obormot atru...@gmail.com wrote: Hi, guys. I'm trying to make an image darker, but the image has some pixels transparent. I want to keep those pixels intact. I tried DARKEN and couple other filters, but they seem to alter transparent pixels as well. Do you know if there is a way to keep transparent pixels intact while applying a color filter? Sincerely, A. --~--~-~--~~~---~--~~ 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: Color filter modes and transparent colors
Glad MULTIPLY worked for you. I think DARKEN should have worked, assuming your op-color had zero alpha in it (so as not to affect the resulting alpha). e.g. 0x0088 On Mon, Feb 9, 2009 at 12:09 PM, Obormot atru...@gmail.com wrote: I don't think there's a bug there, but maybe it wasn't the right filter for me. I tried SRC_OVER. Here's the result: http://tourizo.org/src_over.PNG 2 buttons. One is with the SRC_OVER applied with the color you suggested. This worked for me much better: iv.setColorFilter(_darkenColor, PorterDuff.Mode.MULTIPLY); Where _darkenColor is defined like this: private final static int _darkenColor = Color.parseColor (#FF808080); Here's the result: http://tourizo.org/multiply.PNG On Feb 9, 8:22 am, Mike Reed r...@google.com wrote: Sounds like a bug: DARKEN should not alter a fully transparent pixel. I will try to reproduce. Does SRC_OVER + some shade of gray work for you, like 0x)? On Sat, Feb 7, 2009 at 2:01 AM,Obormotatru...@gmail.com wrote: Hi, guys. I'm trying to make an image darker, but the image has some pixels transparent. I want to keep those pixels intact. I tried DARKEN and couple other filters, but they seem to alter transparent pixels as well. Do you know if there is a way to keep transparent pixels intact while applying a color filter? Sincerely, A. --~--~-~--~~~---~--~~ 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: Color filter modes and transparent colors
Yea, you're right. I should think before I type. Hurray for MULTIPLY! On Mon, Feb 9, 2009 at 12:43 PM, Obormot atru...@gmail.com wrote: Just tried that as well. Doesn't affect the picture at all. I assume that's because of 00 alpha portion. So it's got to be more than 00 to alter the image. On Feb 9, 11:33 am, Mike Reed r...@google.com wrote: Glad MULTIPLY worked for you. I think DARKEN should have worked, assuming your op-color had zero alpha in it (so as not to affect the resulting alpha). e.g. 0x0088 On Mon, Feb 9, 2009 at 12:09 PM, Obormot atru...@gmail.com wrote: I don't think there's a bug there, but maybe it wasn't the right filter for me. I tried SRC_OVER. Here's the result: http://tourizo.org/src_over.PNG 2 buttons. One is with the SRC_OVER applied with the color you suggested. This worked for me much better: iv.setColorFilter(_darkenColor, PorterDuff.Mode.MULTIPLY); Where _darkenColor is defined like this: private final static int _darkenColor = Color.parseColor (#FF808080); Here's the result: http://tourizo.org/multiply.PNG On Feb 9, 8:22 am, Mike Reed r...@google.com wrote: Sounds like a bug: DARKEN should not alter a fully transparent pixel. I will try to reproduce. Does SRC_OVER + some shade of gray work for you, like 0x)? On Sat, Feb 7, 2009 at 2:01 AM,Obormotatru...@gmail.com wrote: Hi, guys. I'm trying to make an image darker, but the image has some pixels transparent. I want to keep those pixels intact. I tried DARKEN and couple other filters, but they seem to alter transparent pixels as well. Do you know if there is a way to keep transparent pixels intact while applying a color filter? Sincerely, A. --~--~-~--~~~---~--~~ 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: quick questions about Skia in android
Start your adventure by instantiating SkGLCanvas (after you have a current gl context) and then draw into it. On Mon, Feb 9, 2009 at 4:31 PM, thesquib thesq...@gmail.com wrote: Not officially supported, but is possible? How might we go about using this unsupported redirection to GL canvas? On Jan 6, 3:43 am, Mike Reed r...@google.com wrote: Skia is a 2D engine for drawing to abitmap. However, there is experimental support for a canvas that redirects its calls to aGL context, but this is not officially supported at the moment. On Dec 31, 2008, at 3:15 AM, Andy Quan wrote: Anyone knows what the relationship between Skia and OpenGL is? Is Skia for 2D purpose only? Is Skia in android accelarated by OpenGL(libagl)? -- Regards, Andy Quan --~--~-~--~~~---~--~~ 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: Read/write JPEG metadata (e.g. in EXIF format)
There is not (afaik) yet. What specific uses do you have (to help scope the request)? On Fri, Feb 6, 2009 at 5:43 AM, GiladH gila...@gmail.com wrote: Hey guys, Is there a way to directly access a Jpeg's file metadata, without having to go through the ImageManager services? Tnx, GiladH --~--~-~--~~~---~--~~ 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: BitmapShader performance
Doh! You've stumbled across a known missing optimization. No promises,
but this has been identified as an future optimization.
The dirty details are that the current code has special optimizations
for a straight drawBitmap when there is no matrix (other than
translate). In addition, there is another optimization for SRC mode
with 32bit bitmaps, where the blitter can literally call memcpy, since
there is no need to inspect the src pixels for blending. Neither of
these optimizations exist (yet) for the bitmapshader code.
On Thu, Feb 5, 2009 at 5:41 PM, tomgibara m...@tomgibara.com wrote:
Romain, Thanks for the explanation.
On Feb 5, 10:26 pm, Romain Guy romain...@google.com wrote:
Tom,
A shader is a per-pixel operation, which lets you apply it to any
shape, respecting alpha blending as well. As such it is not surprising
that your first method is faster.
On Thu, Feb 5, 2009 at 2:08 PM, tomgibara m...@tomgibara.com wrote:
I'm experimenting with tiling a fullscreen image (480x320px ARGB
bitmap) with a square image (160x160px ARGB bitmap). My initial
implementation was naive:
public void render(Canvas canvas) {
final int size = tile.getWidth();
final int w = canvas.getWidth();
final int h = canvas.getHeight();
for (int y = 0; y h; y += size) {
for (int x = 0; x w; x += size) {
canvas.drawBitmap(tile, x, y, null);
}
}
}
Then I remembered that Paint supports a Shader, so I swapped this
implementation for something much more satisfying:
public void render(Canvas canvas) {
canvas.drawPaint(paint);
}
Where paint is initialized outside this method with:
paint = new Paint();
paint.setShader(new BitmapShader(tile, Shader.TileMode.REPEAT,
Shader.TileMode.REPEAT));
I expected that using a BitmapShader would be competitive with the
first implementation and probably slightly faster. But initial
benchmarking indicates that the first method is more than twice as
fast (almost 3x as fast if PorterDuff.Mode.SRC is used for both). I
found that surprising.
Is there a good reason that the BitmapShader is necessarily much
slower, or does it point to a deficiency in its implementation?
--
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
--~--~-~--~~~---~--~~
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[android-developers] Re: Read Image with multiple Frames - Animated Gif
Sorry, the decoders don't expose per-frameness yet. It may seem awkward, but you can load a Movie, and then draw each frame into an offscreen bitmap, and then save/compress those into separate files. On Tue, Feb 3, 2009 at 5:23 PM, Siva Rajaraman sriram...@gmail.com wrote: Hello Everyone, I would like to know how to read in an image file which has multiple frames in it. Something like an animated gif file. I would like to perform frame by frame animation with a file of this type. I don't want to have each frame as drawables in the resource directory. Can anyone trhow some light on how to perform the above mentioned tasks. Thanks Siva P.S - I have already checked the example in the API demos where an animated gif is read as an object of type Movie. I don't want to read it in as a movie file. --~--~-~--~~~---~--~~ 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: Does Android Browser support right menu - open with ?
If you long-press on a link, the browser brings up a menu of options. If that isn't sufficient, can you explain in more detail the scenario you'd like to support? What is the link to? Is it sufficient that you can copy the link to the clipboard? On Thu, Jan 22, 2009 at 3:16 AM, Guolong liuguolong...@gmail.com wrote: Hello, I want to implement the following scenario: when user browses a web page and right-click a link, then user can choose to open the link with a different Application (except Browser). Is it possible in Android? --~--~-~--~~~---~--~~ 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: size of Bitmap
The config (size, format, etc.) of a bitmap is immutable. It can only be specified when the bitmap is first created. On Wed, Jan 21, 2009 at 11:05 AM, elo esyo...@gmail.com wrote: HI I would like to set the size of a Bitmap, there are no setWidth() or setHeight() so I don't know how to do this Thank you --~--~-~--~~~---~--~~ 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: Round Corners of Bitmap
You can also draw a roundrect (with antialiasing on the paint) with that xfermode to get the same effect. On Mon, Jan 19, 2009 at 12:49 PM, Patrick bpatm...@gmail.com wrote: You could have a 9-patch drawable that is an alpha mask of the shape you want to keep, and draw that onto the canvas obtained from the bitmap using the DST_IN PorterDuff mode. Making it a 9-patch will let you set the corners to not stretch, so you can use it no matter the size of the destination bitmap. --~--~-~--~~~---~--~~ 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: Saving/Loading dynamic Bitmaps
Can you call Bitmap.compress() and just stored the resulting png-stream in your file? On Wed, Jan 14, 2009 at 9:37 PM, Patrick bpatm...@gmail.com wrote: Ok, I have to post again, because what appears to have worked before only did if the alpha channel of the bitmap was mostly opaque. All I need is to save and load a bitmap inside a file of my own format. I don't really care what format the bitmap data itself has, as long as 100% of the data in the bitmap is restored on load, including the alpha channel. I have now spent several days trying to achieve what should be a very simple thing. Bitmap.getPixels clearly does not return the raw bitmap data, at least not for an format. The color channels are modified based on the alpha in some way. Bitmap.copyPixelsToBuffer seems to return better results, but there is no equivalent Bitmap.copyPixelsFromBuffer to restore the bitmap on load, and using Bitmap.setPixels to restore gives a blueish tint. I thought of playing some trick where I would get the pixels, copy out the alpha component to my own storage, set the alpha to 0xFF everywhere on the bitmap, and then read the color out. But that doesn't seem to work either. The color channels are different, but still not correct. Pixels with a low alpha value are darker then what they should be. A pixel that was set to 20% opaque white comes back as 20% opaque blackish. I am really at a loss as to what I can possibly do to properly extract and restore the exact state of a bitmap. --~--~-~--~~~---~--~~ 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: Converting Bitmap to Byte Array
Bitmap.compress(...) ? On Sat, Jan 10, 2009 at 2:40 AM, Timothy DeWees whtdrgn...@gmail.com wrote: Hello, I need to re-size a Bitmap and save it to a database. I can perform the resize, but how do I convert the re-sized Bitmap back to a Byte array for storage in the BLOB? Original format is JPG/PNG --~--~-~--~~~---~--~~ 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: Help How to lazy load images
We don't support async image decoding yet (ala push model).
On Tue, Jan 6, 2009 at 11:50 PM, jbpring...@gmail.com
jbpring...@gmail.com wrote:
Hi
I am using the following code to display an image from the internet
ImageView i = new ImageView(mContext);
i.setImageDrawable(getDrawable(http://www.google.com/images/
nav_logo3.png));
...
public Drawable getDrawable(String imgUrl) {
try {
URL url = new URL(imgUrl);
InputStream is = (InputStream) url.getContent();
Drawable d = Drawable.createFromStream(is, src);
return d;
} catch (MalformedURLException e) {
e.printStackTrace();
return null;
} catch (IOException e) {
e.printStackTrace();
return null;
}
}
but I would like to be able to load the image asynchronously so that
if I want to display a list of 10 images then the text would start to
render and then images would load one after the other (like a
browser...) . The problem with every code that I have seen so far is
that it is all synchronous that is not really good for user
experience. I am sure I am missing somthing and would really
appreciate your help
thanks
jb
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[android-developers] Re: Skia Graphics Library
Agreed. Skia is not offered as a lib/sharedlib inside android, as its api is not guaranteed to be stable over time. See code.google.com/p/skia for the active trunk. On Wed, Jan 7, 2009 at 8:31 AM, David Turner di...@android.com wrote: forget about using Skia headers for deployed projects. they are not part of the stable Android API and *will* change in future releases, breaking your code in unexpected ways. but if you want to go that route and inflict huge pain to yourself in the future, have a look to android/external/skia On Wed, Jan 7, 2009 at 2:04 PM, sunitna...@gmail.com sunitna...@gmail.com wrote: Can anybody help me with using the Skia Graphis Library for implementation of various controls or even if someone can help me find the .h files related to SKIA in myandroid/ It's a bit urgent... Regards, Sunit --~--~-~--~~~---~--~~ 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 create a bitmap with desired text?
This may not be the issue, but inside a drawable, you need to draw
everything relative to your bounds (i.e. getBounds()).
arg0.drawBitmap(getBitmap(), bounds.left, bounds.top, ...)
On Tue, Jan 6, 2009 at 3:21 AM, Ernest sunkil...@gmail.com wrote:
Hi,Everythone
I want to create a new bitmap and use it only in memory.The bitmap
is created from an exist drawable resource and paint some text in it.I
tested the BitmapDrawable,and override the draw(Canvas arg0),such as
public void draw(Canvas arg0) {
// TODO Auto-generated method stub
Paint textPaint = new Paint();
arg0.drawBitmap(getBitmap(), 0, 0, textPaint);
textPaint.setTextSize(12);
textPaint.setTypeface(Typeface.DEFAULT);
textPaint.setAntiAlias(true);
textPaint.setStyle(Style.FILL);
arg0.drawText(name,10,10, textPaint);
} but the bitmap is not works well,the text is not be painted.Anyone
could help me?Thank you very much.
Best Regards
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[android-developers] Re: what's the equivalent class of java.awt.Image
Bitmap is correct. I also think android has awt classes implemented, btw. On Tue, Jan 6, 2009 at 6:54 AM, Derek xianguan...@gmail.com wrote: I'm trying to re-implement the missing pieces of AWT the app actually uses. --~--~-~--~~~---~--~~ 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: Working with JPEG images
BitmapFactory.decodeStream(...) On Sun, Jan 4, 2009 at 11:55 AM, nickthecook nickthec...@gmail.com wrote: Hello all, I'm looking for a way to work with JPEG images read from a file in Android. Specifically, I would like to scale them, and be able to get their height and width. I can get an InputStream to a JPEG file on the SD card, and I can work with the raw bytes, but I'd like something a little more high-level. Bitmap seems to be able to encode JPEGs, but not decode them. 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 -~--~~~~--~~--~--~---
[android-developers] Re: Error in native method Picture.nativeCreateFromStream()
That method should not crash (I will fix that), but it is only
intended to re-create a picture that was previously written to a
stream. It does not know how to decode or interpreted images or other
data formats. Use BitmapFactory for that.
On Sun, Jan 4, 2009 at 11:29 AM, nickthecook nickthec...@gmail.com wrote:
Hello all,
I'm having some trouble creating a Picture from an InputStream. I am
trying to do this:
ByteArrayInputStream bis = new ByteArrayInputStream(bytes);
Picture pic = Picture.createFromStream(bis);
The problem also occurs when I try to use an InputStream returned by
ContentResolver.openInputStream(Uri):
InputStream is = getContentResolver.openInputStream(mUri);
Picture pic = Picture.createFromStream(is);
Picture.createFromStream(InputStream) invokes the native method
Picture.nativeCreateFromStream(InputStream, byte[]), and this is where
the trail goes cold for me:
public static Picture createFromStream(InputStream stream) {
return new Picture(
nativeCreateFromStream(stream, new byte
[WORKING_STREAM_STORAGE]));
}
I have been loading images from this Uri (content://media/external/
images/media/152) successfully for a while. I open an InputStream,
read all the bytes, close the input stream, and there is no problem.
However, when I try to use either the InputStream returned by
ContentResolver.openInputStream(Uri), or I read all the bytes out of
that and wrap them in a ByteArrayInputStream, Picture.createFromStream
(InputStream) fails with the stack trace below.
Has anyone successfully used Picture.createFromStream(InputStream)?
=== Stack Trace
I/dalvikvm-heap( 4776): Grow heap (frag case) to 5.940MB for 316-
byte allocation
D/dalvikvm( 4776): GC freed 371 objects / 20736 bytes in 89ms
I/Image ( 4776): Read 345682 bytes for
content://media/external/images/media/152.
I/DEBUG ( 29): *** *** *** *** *** *** *** *** *** *** *** *** ***
*** *** ***
I/DEBUG ( 29): Build fingerprint: 'android-devphone1/
dream_devphone/dream/trout:1.0/UNLOCKED/116222:userdebug/test-keys'
I/DEBUG ( 29): pid: 4776, tid: 4776 org.hopto.group18.postbot
I/DEBUG ( 29): signal 6 (SIGABRT), fault addr 12a8
I/DEBUG ( 29): r0 r1 0006 r2 r3 0080
I/DEBUG ( 29): r4 2eb0 r5 40008000 r6 r7 0025
I/DEBUG ( 29): r8 beb0a630 r9 4104d9c8 10 4104d9b8 fp
I/DEBUG ( 29): ip sp beb0a5c8 lr afe0ef37 pc
afe0d1fc cpsr 0010
I/DEBUG ( 29): #00 pc afe0d1fc /system/lib/libc.so
I/DEBUG ( 29): #01 pc afe0ef34 /system/lib/libc.so
I/DEBUG ( 29): #02 pc ace08540 /system/lib/libcorecg.so
I/DEBUG ( 29): #03 pc ac075cec /system/lib/libsgl.so
I/DEBUG ( 29): #04 pc ad3413da /system/lib/
libandroid_runtime.so
I/DEBUG ( 29): #05 pc ad00d9f4 /system/lib/libdvm.so
I/DEBUG ( 29): #06 pc ad04120e /system/lib/libdvm.so
I/DEBUG ( 29): #07 pc ad012748 /system/lib/libdvm.so
I/DEBUG ( 29): #08 pc ad02a92c /system/lib/libdvm.so
I/DEBUG ( 29): #09 pc ad0169d0 /system/lib/libdvm.so
I/DEBUG ( 29): #10 pc ad052096 /system/lib/libdvm.so
I/DEBUG ( 29): #11 pc ad03ccbc /system/lib/libdvm.so
I/DEBUG ( 29): #12 pc ad012748 /system/lib/libdvm.so
I/DEBUG ( 29): #13 pc ad02a92c /system/lib/libdvm.so
I/DEBUG ( 29): #14 pc ad0169d0 /system/lib/libdvm.so
I/DEBUG ( 29): #15 pc ad051f10 /system/lib/libdvm.so
I/DEBUG ( 29): #16 pc ad03f87a /system/lib/libdvm.so
I/DEBUG ( 29): #17 pc ad3282b4 /system/lib/
libandroid_runtime.so
I/DEBUG ( 29): #18 pc ad328d40 /system/lib/
libandroid_runtime.so
I/DEBUG ( 29): #19 pc 8c12 /system/bin/app_process
I/DEBUG ( 29): #20 pc afe1dbd2 /system/lib/libc.so
I/DEBUG ( 29): #21 pc afe0b010 /system/lib/libc.so
I/DEBUG ( 29): #22 pc bd70 /system/bin/linker
I/DEBUG ( 29): stack:
I/DEBUG ( 29): beb0a588 beb0a630 [stack]
I/DEBUG ( 29): beb0a58c afe35f3c
I/DEBUG ( 29): beb0a590 0084
I/DEBUG ( 29): beb0a594 0001
I/DEBUG ( 29): beb0a598 afe35f3c
I/DEBUG ( 29): beb0a59c 000c
I/DEBUG ( 29): beb0a5a0 afe35f3c
I/DEBUG ( 29): beb0a5a4 afe12dbd /system/lib/libc.so
I/DEBUG ( 29): beb0a5a8 afe35f3c
I/DEBUG ( 29): beb0a5ac afe35f90
I/DEBUG ( 29): beb0a5b0
I/DEBUG ( 29): beb0a5b4 afe1238d /system/lib/libc.so
I/DEBUG ( 29): beb0a5b8 ace0acc0 /system/lib/libcorecg.so
I/DEBUG ( 29): beb0a5bc afe11539 /system/lib/libc.so
I/DEBUG ( 29): beb0a5c0 df002777
I/DEBUG ( 29): beb0a5c4
[android-developers] Re: Problem saving canvas to file
Your code does not change bitmapOrg, but does create a new bitmap
(whatever bitmap the canvas is drawing into). I expect you want to
compress *that* bitmap to a file.
begin pseudo code
b = Bitmap.createBitmap(...);
c = new Canvas(b);
// now draw into c, e.g. c.drawBitmap(...), etc.
b.compress(...);
On Jan 4, 2009, at 8:26 AM, Protocol-X wrote:
Ive been searching all ove on how to edit a image and save it. The
only way i have come accross other than just changing the size or
orientation is to use canvas. Now canvas works fine but i cannot seem
to save the newley created image.. the image always returns the
original image.
@Override protected void onDraw(Canvas canvas) {
FileInputStream in = null;
try {
in = new FileInputStream(myimage.jpg);
} catch (FileNotFoundException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
Bitmap bitmapOrg = BitmapFactory.decodeStream(in);
int wd = bitmapOrg.getWidth();
int hd = bitmapOrg.getHeight();
canvas.drawBitmap(bitmapOrg, 0, 0, null);
canvas.drawBitmap(bitmapOrg, wd, 0, null);
canvas.drawBitmap(bitmapOrg, 0, hd, null);
canvas.drawBitmap(bitmapOrg, wd, hd, null);
canvas.save();
FileOutputStream fos = null;
try {
fos = new FileOutputStream(/sdcard/test.png);
} catch (FileNotFoundException e) {
e.printStackTrace();
}
bitmapOrg.compress(Bitmap.CompressFormat.PNG, 50, fos);
try {
fos.close();
} catch (IOException e) {
e.printStackTrace();
}
}
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[android-developers] Re: quick questions about Skia in android
Skia is a 2D engine for drawing to a bitmap. However, there is experimental support for a canvas that redirects its calls to a GL context, but this is not officially supported at the moment. On Dec 31, 2008, at 3:15 AM, Andy Quan wrote: Anyone knows what the relationship between Skia and OpenGL is? Is Skia for 2D purpose only? Is Skia in android accelarated by OpenGL(libagl)? -- Regards, Andy Quan --~--~-~--~~~---~--~~ 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: Freeing Bitmaps
That looks fine. The only issue/trick for bitmaps that I'm aware of is
the option to call bitmap.recycle(), which forces the bitmap to free
its pixel memory immediately, rather than waiting for the GC. This is
optional, since the GC will trigger this too. Calling recycle() is
tricky, because now the bitmap object is dead, and will throw an
exception if it is used, so only do this if you're low on memory, and
want to free some up right away (and you're SURE you won't reference
that bitmap again).
On Dec 23, 2008, at 1:08 PM, Brad Gies wrote:
I’ve seen many discussions on freeing Bitmaps, but I don’t think I
have ever seen a definitive answer on the proper method of doing it.
I have an activity which creates a custom class, and the custom class
has a clear method, which I call before freeing the class.
Below is the code from my custom class, and, and following it is the
code from the OnDestroy event . Is this sufficient to make sure I am
not leaking memory? Note that it is untested code right now, so may
contain a few spelling mistakes.
public class JSONDataTable
{
public ArrayListBitmap BitmapArray;
…..
Methods etc.
……
public void Clear()
{
if (BitmapArray != null)
{
for (int i = BitmapArray.size() - 1; i -1 ; i-- )
{
BitmapArray.set(i, null);
BitmapArray.remove(i);
}
}
BitmapArray = null;
}
}
FROM THE ACTIVITY
protected void onDestroy()
{
if (JSONProductTable != null) {
JSONProductTable.Clear();
JSONProductTable = null;
}
}
Sincerely,
Brad Gies
-
Brad Gies
27415 Greenfield Rd, # 2,
Southfield, MI, USA
48076
-
Moderation in everything, including abstinence
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[android-developers] Re: OutOfMemoryError BitmapFactory.nativeDecodeByteArray inside Threads
Its a little raw, but if you know you're absolutely done using a given
bitmap object, you can call bitmap.recycle(). This immediately frees
up the memory associated with the bitmap, and marks it as dead,
meaning it cannot be referenced again (i.e. don't try to draw or get/
set its pixels anymore).
i.e.
for (all of my big images) {
Bitmap b = decode(...);
canvas.drawBitmap(b, ...);
b.recycle();
// yikes, don't reference b again)
}
On Dec 15, 2008, at 9:04 PM, Mark K wrote:
Is there a work around for this problem? Something I need to do
differently perhaps? It seems like garbage collection is not occurring
between successive bitmap decoding operations. Explicitly calling gc()
does not seem to help. This is particularly a problem on the G1,
because there is no way to reduce the camera resolution, all of the
camera pictures are large. If I loop through a directory of pictures
taken by the camera and use BitmapFactory.decodeFile(), I will get an
out of memory error on the 2nd or 3rd iteration. Since I am only
displaying/decoding one bitmap at a time I would hope that garbage
collection would free up the memory between operations such that this
does not occur. Any help would be greatly appreciated. Here's the code
I use: This code runs a slide show of the images in the camera
directory, it uses Handler.postDelayed() to render each picture. Is
there anyway to tweak the code to get rid of the out of memory
problem.
public boolean slideShow()
{
String baseDir = /sdcard/dcim/Camera/;
long showTime = 1500;
File dir = new File(baseDir);
File[] pics = dir.listFiles();
for ( int i=0; ipics.length; i++ )
{
String pic=baseDir+pics[i].getName();
handler.postDelayed(new ShowSlide(pic), i*showTime);
}
return true;
}
class ShowSlide extends Thread
{
String pc=;
public ShowSlide(String pc)
{
this.pc=pc;
}
public void run()
{
System.out.println(Showing picture: +pc.toString());
displayPicture(pc);
}
}
public boolean displayPicture(String filepath)
{
File file = new File(filepath);
BitmapFactory bfac = new BitmapFactory();
try
{
bm = bfac.decodeFile(filepath);// out of memory error occurs
here!
handler.post(new SetImage(iView, bm));
}
catch(Exception e)
{
Log.e(TAG,display picture failed: +filepath+ +e.toString
());
e.printStackTrace();
return false;
}
return true;
}
class SetImage extends Thread
{
ImageView vv;
Bitmap bb;
public SetImage(ImageView vv, Bitmap bb)
{
this.vv=vv;
this.bb=bb;
}
public void run()
{
vv.setImageBitmap(bb);
}
}
On Dec 15, 2:48 pm, Romain Guy romain...@google.com wrote:
I've run into this exact same problem a number of times myself. Not
sure if its a bug or just a limitation of the jvm, can't seem to
process more than a few large bitmaps without this occuring, this
always seems to occur when decoding bitmaps from file.
Neither, you are just using too much memory.
--
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
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[android-developers] Re: OutOfMemoryError BitmapFactory.nativeDecodeByteArray inside Threads
Depending on the details, bitmap pixels may be allocated in the VM heap or in the native heap, but in the latter case, we still debit the VM's heap by the amount that was allocated, so that in either case we don't exceed the per-app budget. This may explain why you're running out of heap even though DDMS doesn't see the allocations. On Dec 15, 2008, at 2:29 PM, Mark K wrote: I've run into this exact same problem a number of times myself. Not sure if its a bug or just a limitation of the jvm, can't seem to process more than a few large bitmaps without this occuring, this always seems to occur when decoding bitmaps from file. Hopefully its on the radar as a bug and will get fixed at some point. This is a problem since de-coding bitmaps from file is a fairly common operation. Mark On Dec 14, 9:49 am, plusminus stoeps...@gmx.de wrote: The following situation happens only in a few cases, but it does more than once. - I'm receiving several OutOfMemoryError in BitmapFactory.nativeDecodeByteArray. DDMS-Heap-View never broke the 16MB barrier. I can't even get it above 6MB, while going wild and smashing keys like a monkey: --- 1 5,820 MB2,751 MB3,069 MB47,26% 54.433 --- The situation is that I have a ThreadPoolExector: --- protected ExecutorService mThreadPool = Executors.newCachedThreadPool (); --- ... ,which load several 256x256 pngs to the RAM. (Average png-size: 20kb) StackTrace-Desciption: That OutOfMemoryError happens several times in the Threads, until the VM decides its enough and stops the whole process. StackTrace: # W/AudioFlinger( 24): write blocked for 49 msecs W/AudioFlinger( 24): write blocked for 48 msecs W/AudioFlinger( 24): write blocked for 49 msecs D/dalvikvm( 410): GC freed 31478 objects / 1613104 bytes in 196ms D/dalvikvm( 410): GC freed 6404 objects / 991024 bytes in 151ms D/dalvikvm( 410): GC freed 5224 objects / 1229888 bytes in 137ms E/SOCKETLOG( 410): add_recv_stats recv 0 E/SOCKETLOG( 410): add_recv_stats recv 0 E/SOCKETLOG( 410): add_recv_stats recv 0 E/SOCKETLOG( 410): add_recv_stats recv 0 E/dalvikvm-heap( 410): 65536-byte external allocation too large for this process. E/dalvikvm-heap( 410): 65536-byte external allocation too large for this process. E/( 410): VM won't let us allocate 65536 bytes W/dalvikvm( 410): threadid=59: thread exiting with uncaught exception (group=0x40010e28) E/AndroidRuntime( 410): Uncaught handler: thread pool-8-thread-6 exiting due to uncaught exception E/( 410): VM won't let us allocate 65536 bytes E/dalvikvm-heap( 410): 65536-byte external allocation too large for this process. W/dalvikvm( 410): threadid=65: thread exiting with uncaught exception (group=0x40010e28) E/dalvikvm-heap( 410): 65536-byte external allocation too large for this process. E/( 410): VM won't let us allocate 65536 bytes W/dalvikvm( 410): threadid=43: thread exiting with uncaught exception (group=0x40010e28) E/AndroidRuntime( 410): Uncaught handler: thread pool-8-thread-3 exiting due to uncaught exception E/AndroidRuntime( 410): java.lang.OutOfMemoryError: bitmap size exceeds VM budget E/AndroidRuntime( 410):at android.graphics.BitmapFactory.nativeDecodeByteArray(Native Method) E/AndroidRuntime( 410):at android.graphics.BitmapFactory.decodeByteArray(BitmapFactory.java:234) E/AndroidRuntime( 410):at android.graphics.BitmapFactory.decodeByteArray(BitmapFactory.java:247) E/AndroidRuntime( 410):at org.andnav2.osm.views.tiles.OSMMapTileFilesystemCache$1.run (OSMMapTileFilesystemCache.java:234) E/AndroidRuntime( 410):at java.util.concurrent.ThreadPoolExecutor$Worker.runTask (ThreadPoolExecutor.java:648) E/AndroidRuntime( 410):at java.util.concurrent.ThreadPoolExecutor$Worker.run (ThreadPoolExecutor.java:673) E/AndroidRuntime( 410):at java.lang.Thread.run(Thread.java: 935) E/( 410): VM won't let us allocate 65536 bytes E/AndroidRuntime( 410): Uncaught handler: thread pool-8-thread-9 exiting due to uncaught exception E/dalvikvm-heap( 410): 65536-byte external allocation too large for this process. E/( 410): VM won't let us allocate 65536 bytes W/dalvikvm( 410): threadid=61: thread exiting with uncaught exception (group=0x40010e28) E/AndroidRuntime( 410): java.lang.OutOfMemoryError: bitmap size exceeds VM budget E/AndroidRuntime( 410):at android.graphics.BitmapFactory.nativeDecodeByteArray(Native Method) E/AndroidRuntime( 410):at android.graphics.BitmapFactory.decodeByteArray(BitmapFactory.java:234) E/AndroidRuntime( 410):at
[android-developers] Re: How to add new font to android browse ?
Applications can add new fonts, but they are only visible within that application. The ability to add system-wide fonts is not supported at this time. On Dec 14, 2008, at 8:43 AM, Milad wrote: I can not see persian font's in my G1 browser, Is any way to add new set of font's to G1 ? --~--~-~--~~~---~--~~ 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: Canvas.drawBitmap(int[] colors, ...) creates wrong alpha blending
Sounds like a good bug. Can you file it as one, and I'll take a look? On Dec 10, 2008, at 2:31 PM, Toothy Bunny wrote: I could not find a way to attach pictures with my post, so I post the screen shot on the web, and here is the link: The test screen shot: http://www.omnigsoft.com/TechnicalSupport/TestResult.png The original PNG image (with alpha channel) I used for the test: http://www.omnigsoft.com/TechnicalSupport/pngWithAlpha.png Hongkun OmniGSoft --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Using Homemade TrueType Fonts In Android
If you substitute your font for the one in ApiDemos, and rebuild them, do you see yours appear in ApiDemos/src/com/example/android/apis/ graphics/Typefaces.java? On Dec 11, 2008, at 3:58 PM, illiniwatcher wrote: To all: I've noticed that Android lets developers include their own TrueType fonts, by way of the assets\fonts folder. This is a great feature, and works well. But I notice that if I copy one of my own homemade TrueType fonts - created using CorelDraw's export function - any text I render in that font comes out as the Android system default font rather than in the font I've just included. Is there something the Android environment looks for in TrueType or *.TTF files - a digital signature, a certain character, something - that would cause a homemade font file's outlines to be ignored? The TTF files I've created only have a subset of the entire character set, usually consisting only of numbers and symbols. The TTF file works just fine in major applications like Microsoft Office (even the latest one) and Adobe Photoshop. Can any of the Android developers comment? Thanks, Charles --~--~-~--~~~---~--~~ 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: the fastest way to draw on screen
If the image is predrawn, then you can just store it as .png, and then decode it (BitmapFactory) with a preferred config as RGB_565 (see BitmapFactory options). If the image is drawn by your code, and you can create a Bitmap in RGB_565, and use setPixels(int[]), which will down-sample your ints to 565 shorts for you. Either way, the resulting Bitmap will be 565, which should draw very quickly to the screen (assuming no matrix on the canvas, and no alpha or colorFilter or xfermode on the paint). On Dec 10, 2008, at 5:39 AM, Romkin wrote: To be honest the surface in created in C, as char* and originally i wanted to use 16bit colour, but Bitmap takes int[], which means i have to use 32bit, is there a way i can solve it to use 16bit? On 9 Dec, 17:38, Mike Reed [EMAIL PROTECTED] wrote: I am assuming you have predrawn what you want in the Bitmap. If so, be sure that the Bitmap's config matches your window (typically 565), otherwise things will go a lot slower, as we depth-convert your Bitmap each time it is drawn. If you have a large area that is a solid color, it might be faster to draw that (via canvas.drawColor or canvas.drawRect) and then draw the bitmap. It all depends, but the fastest a Bitmap can go is memcpy, but drawing a large area in a solid color can use memset, which is faster for the same number of dst pixels. On Dec 9, 2008, at 11:54 AM, Romkin wrote: What is the fastest way to draw on screen? currently we use OnDraw and have Bitmap, but is there a faster way to draw pixel array to screen? 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: the fastest way to draw on screen
I am assuming you have predrawn what you want in the Bitmap. If so, be sure that the Bitmap's config matches your window (typically 565), otherwise things will go a lot slower, as we depth-convert your Bitmap each time it is drawn. If you have a large area that is a solid color, it might be faster to draw that (via canvas.drawColor or canvas.drawRect) and then draw the bitmap. It all depends, but the fastest a Bitmap can go is memcpy, but drawing a large area in a solid color can use memset, which is faster for the same number of dst pixels. On Dec 9, 2008, at 11:54 AM, Romkin wrote: What is the fastest way to draw on screen? currently we use OnDraw and have Bitmap, but is there a faster way to draw pixel array to screen? 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: How to create bitmap directly from byte array?
Sorry, there is no API for creating bitmaps from anything but int[] at the moment. For future reference, how should the system interpret the bytes you want to send it? Are the indices into a colortable? 332 packed? mike On Dec 9, 2008, at 2:51 AM, shuoshuo wrote: Hi, Anyone' help is appreciated. I now want to create bitmap using a byte array which contains the pixels data, one byte correspond one pixel. But I found that the no api of bitmap accept bytearray, only int [] , 4 bytes correspond one pixel. If I convert my bytearray to int[], it will cost too much memory. Do anyone know how to display the image using my bytearray directly? Thanks a lot ! --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Bitmap.getPixels()
The color seems fine. Can you enclose a code-snippet, for the draw and the getPixels() call? thanks On Thu, Dec 4, 2008 at 5:55 PM, jman [EMAIL PROTECTED] wrote: It's 50% transparent, i.e. alpha channel is 0x80, paint color is 0x8000ff00 On Dec 4, 8:52 am, Robert Green [EMAIL PROTECTED] wrote: Did you mean partially transparent green or fully transparent? On Dec 4, 1:21 am, jman [EMAIL PROTECTED] wrote: I painted a transparent green curve on top of a background bitmap. When I use Bitmap.getPixels() to get the result into byte array, I always get a black curve. The curve position is correct but color isn't. Is there anything I need to do before calling Bitmap.getPixels ()? 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Top Status Bar Webkit transparent
We do no t have that feature yet. On Dec 5, 2008, at 6:35 AM, Fred Grott(shareme) wrote: I have a question in iPhone you can make the top bar go away in the wbekit view see: http://ajaxian.com/archives/iphone-full-screen-webapps If the same feature is in Android webkit what meta tag valeus would I use to enable it? I assume that it may be android_something-something or etc. Thanks..because I know how long you will search to find this answer --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: java.awt.polygon equivalent in android?
If you're looking for polygons, try either android.graphics.Path, or android.graphics.Canvas.drawPoints(...) On Dec 3, 2008, at 4:31 PM, chas__123 wrote: Hi, I'm trying to draw an n-dimensional polygon and unable to find an equivant api to awt.polynomial. Does anyone know if there is one? rgds, C --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Loading a bitmap from a byte buffer
The only ways to specify the pixels directly are via:
- consing up a BMP in memory
- using setPixels(...) api (which takes 32bit ARGB ints)
I apologize there there is no direct API that takes 565 values as input.
On Dec 2, 2008, at 4:41 AM, Koush wrote:
{ SkImageDecoder_GIF_Factory, SkImageDecoder::kGIF_Format },
{ SkImageDecoder_PNG_Factory, SkImageDecoder::kPNG_Format },
{ SkImageDecoder_ICO_Factory, SkImageDecoder::kICO_Format },
{ SkImageDecoder_WBMP_Factory, SkImageDecoder::kWBMP_Format },
{ SkImageDecoder_BMP_Factory, SkImageDecoder::kBMP_Format },
// jpeg must be last, as it doesn't have a good sniffer yet
{ SkImageDecoder_JPEG_Factory, SkImageDecoder::kJPEG_Format }
That's the list of formats supported by SKImageDecoder. Another
possible solution is to dummy up a BMP header (pretty trivial) and
then decode the bytes. But that is still a hack...
On Dec 2, 1:15 am, Christine [EMAIL PROTECTED] wrote:
As John says, why don't you use BitmapFactory.decodeByteArray?
On Dec 2, 10:03 am, Koush [EMAIL PROTECTED] wrote:
Also, the Bitmap class internally (in the C++ JNI atleast) supports
the all familiar lockPixels and unlockPixels methods, which allows
direct access to the byte buffer. I would suggest extending the Java
API to include those methods.
On Dec 2, 1:00 am, Koush [EMAIL PROTECTED] wrote:
Dianne Hackborn: I am asking this in the context of how to create a
screenshot application. Taking screenshots is not possible on the G1
anyways, because reading from /dev/graphics/fb0 is only available to
root and shell and not available to actual applications. Thus is
only
works on hacked phones. So you're asking me to not do something,
when
I'm well past the line of things I should not be doing. :)
Incidentally, the inability to take a simple screenshot of what is
on
your phone is a pretty significant oversight (you're not going to
always be hooked up to a PC with the SDK/DDMS tool at your
disposal).
John Spurlock: Decode byte array is for compressed byte arrays, such
as PNGs and JPG.
I am basically trying to copy directly into the pixel buffer.
On Dec 1, 3:34 pm, John Spurlock [EMAIL PROTECTED] wrote:
BitmapFactory.decodeByteArray ?
http://code.google.com/android/reference/android/graphics/BitmapFacto
...
On Dec 1, 5:58 pm, Koush [EMAIL PROTECTED] wrote:
I inspected Bitmap.cpp and found this function:
static jboolean Bitmap_writeToParcel(JNIEnv* env, jobject,
const SkBitmap* bitmap,
jboolean isMutable, jobject
parcel) {
if (parcel == NULL) {
SkDebugf(--- writeToParcel null parcel\n);
return false;
}
android::Parcel* p = android::parcelForJavaObject(env,
parcel);
p-writeInt32(isMutable);
p-writeInt32(bitmap-config());
p-writeInt32(bitmap-width());
p-writeInt32(bitmap-height());
p-writeInt32(bitmap-rowBytes());
if (bitmap-getConfig() == SkBitmap::kIndex8_Config) {
SkColorTable* ctable = bitmap-getColorTable();
if (ctable != NULL) {
int count = ctable-count();
p-writeInt32(count);
memcpy(p-writeInplace(count * sizeof(SkPMColor)),
ctable-lockColors(), count *
sizeof(SkPMColor));
ctable-unlockColors(false);
} else {
p-writeInt32(0); // indicate no ctable
}
}
size_t size = bitmap-getSize();
bitmap-lockPixels();
memcpy(p-writeInplace(size), bitmap-getPixels(), size);
bitmap-unlockPixels();
return true;
}
I can manually marshal a Bitmap parcel in the proper format, and
then
append the custom byte buffer, and then use createFromParcel to
create
a bitmap. That gets me indirect access to creating a bitmap
directly
from a byte buffer. It's a bit of a hack obviously, and not
ideal. Is
there a better way to do this?
On Dec 1, 2:41 pm, Koush [EMAIL PROTECTED] wrote:
I'm trying to populate a create a bitmap from something other
than an
RGBA int array.
However, the Bitmap creation overloads only take int arrays as
inputs.
In particular, I have a byte buffer that is in the R5G6B5
format that
I want to load directly into a bitmap. The format is supposedly
supported internally, but I can't figure out how to create the
bitmap
without doing the R5G6B5 to A8R8G8B8 conversion first.
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[android-developers] Re: android.graphics, drawing paths, and patterns
Since you want to draw a bitmap, rather than a path/shape, along the
path, I think you'll have to walk the path using PathMeasure manually.
Something like this might be the right skeleton.
void drawBitmapAlongPath(Path p, Bitmap b) {
Matrix m = new Matrix();
PathMeasure meas = new PathMeasure(p, false);
final float length = meas.getLength();
final float advance = b.getWidth();// might be larger to have
space between each bitmap
float distance = 0;
final int flags = PathMeasure.POSITION_MATRIX_FLAG |
PathMeasure.TANGENT_MATRIX_FLAG;
while (distance length) {
meas.getMatrix(distance, m, flags);
canvas.drawBitmap(b, m, ...);
distance += advance;
}
}
The idea is to walk the path (via pathmeasure), and at some interval
(measured in arc-length), retrieve the matrix for that location/angle,
and use that to draw a bitmap. You may need to adjust the matrix (via
preTranslate) to center the bitmap at each location.
mike
PS - the above is just a sketch. I didn't try to compile/run it.
On Dec 2, 2008, at 11:38 AM, Bradley Kite wrote:
Hi fellow developers,
I have a requirement to draw a path on a canvas (which is easy
enough), but to then stamp symbols over it every few pixels.
In particular, the symbols I want to stamp over it are .png images,
and basically change the line so that it contains 'x' shapes on it -
as an example - but the shape can be any thing that can be loaded from
a .png image. This could produce a line that looks like:
--x--x--x--x--x-- etc. - but with the 'x' shapes rotated according to
the angle of the line.
Is there any particular way that this can be done? I've gone through
the following classes - Paint, Path, PathEffect, Canvas and Bitmap -
but cannot find any way to implement the above.
The closest thing I've seen is the DashPathEffect - but all this can
do is break up the line so that dashes are included.
My feeling at this point is that I'm going to have to create a custom
PathEffect which can do this. Is this the correct approach? Have I
missed something glaringly obvious? Could any one give some advise
with regards to how to create custom PathEffects ?
Many thanks in advance.
Regards
--
Brad
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[android-developers] Re: Fwd: Supported unicode characters
U+2603 is not currently in the android fonts. FYI - The default font is DroidSans.ttf (when you don't specify a typeface object). All of the UI fonts (there are 7 currently) in turn reference DroidSansFallback.ttf for characters that they don't contain. mike On Nov 26, 2008, at 8:59 PM, Rui Castro wrote: Hi, I already sent this message to android-framework group, but since I had no answer there I want to post the problem described bellow here. Please read the forward message. Thanks, Rui -- Forwarded message -- From: Rui Castro [EMAIL PROTECTED] Date: Wed, Nov 26, 2008 at 11:52 PM Subject: Re: Supported unicode characters To: [EMAIL PROTECTED] Hi, Replying to myself, again, I noticed that the font used in the phone (the emulator) is not the ones in frameworks/base/data/fonts. The character ☎ (U+2603) appear differently in the character map and in the actual application. See the attached pictures. So, the question is, where is the default font used in the the phone applications? Thanks, Rui On Wed, Nov 26, 2008 at 11:40 PM, Rui Castro [EMAIL PROTECTED] wrote: Hi, I'm sorry to insist on this, but I can't find an explanation for this problem. The Droid Sans font, from Android framework, contains the unicode character ⏏ (U+23CF), as the attached screenshot proves, but when I use it as the text of a button (in the layout XML file with @android:text attribute) what I see is a rectangle as you can see in the attached image. Any ideias about this? What should I do? On Wed, Nov 26, 2008 at 3:14 AM, Rui Castro [EMAIL PROTECTED] wrote: Hi, Thanks for the answer. The characters I want to use are there, but when I use them a rectangle appears where the character should be :( I'm using the strings.xml to put the buttons text, like this: string name=arrow#x21A8;/string and in the layout XML file I reference this text like this Button android:text=@string/arrow ... / I'm I doing something wrong? I suppose I'm not, because this method work very well with the other characters. Thanks, Rui On Wed, Nov 26, 2008 at 1:24 AM, Dan Bornstein [EMAIL PROTECTED] wrote: On Tue, Nov 25, 2008 at 6:19 PM, Rui Castro [EMAIL PROTECTED] wrote: Is there a list of supported characters in Android? You can find the fonts that are part of Android in frameworks/base/data/fonts in the open source repository. -dan Screenshot-Character Map-1.pngScreenshot-Android Emulator (5554)_call.png --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Drawing a circle outline? (not a filled circle)
The latter (canvas.drawCircle) his definitely more efficient, both from a garbage-collection p.o.v., and it gives the renderer the chance to take whatever shortcuts it can, since it knows what you're trying to draw (as opposed to an arbitrary path). On Nov 12, 2008, at 12:34 PM, Greg wrote: You need the style set to STROKE as Peli mentions. You can also use canvas.drawCircle() directly instead of creating a path and adding a circle to the path. Not sure which is more efficient, but you can at least drop 2 lines of code from your chunk there. Greg --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: fontspacint about drawText
drawText only draws a single line, so vertical spacing is always done by the application/view (getFontSpacing returns suggested values for that). Horizontal spacing happens in several ways: - Paint.setTextScaleX() lets you apply a multiplier to all of the widths in the text (making it narrower or wider) - Canvas.drawText() and drawTextOnPath() uses the font's spacing (modulo setTextScaleX) - Canvas.drawPosText() lets you specify the x,y position of every character. On Nov 4, 2008, at 8:00 AM, Narwal wrote: Hello all i know there is a method getFontSpacing(). but which method i should use,if i want to control the fontspacing accurately,when i use drawText. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Question about View, Canvas, and Drawable.. --Basics
Views - yes Canvas - you can create your own to draw into a bitmap, but views are handed a Canvas on their onDraw() method. For a given drawing pass, all of the views (usually) are handed the same Canvas (which points to the screen). However, on a subsetquent call to onDraw(), the actual Canvas object may be different (even if it also points to the screen). Drawable - this is an abstraction for something that knows how to draw itself inside its bounds. There are lots of subclasses (you can create your own), including one that wrapps a Bitmap Bitmap - this is a basic drawing primitive that can be drawn into a Canvas, and/or can be the target of a Canvas. It has basic dimensions and a reference to memory for pixels (either the screen or to offscreen memory) On Nov 4, 2008, at 8:42 AM, joshbeck wrote: Hello all, Is this correct? View: The android screen is divided up into views. Views are basic layout objects. Canvas: You need to have at least one canvas if you want to do any drawing. Each view potentially has its own canvas. Drawable: ---)This is where my 10:30 bedtime turns into a 2:30 am nap in the chair before work.) -What is the difference between a Bitmap and a Drawable? Can Drawables only be used with ImageView Views? Thanks for any help. Josh Beck --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: How to draw fliped mirror image?
canvas.drawBitmap(bitmap, matrix, ...) This is really just a more efficient way to do... canvas.save(Canvas.MATRIX_SAVE_FLAG); canvas.concat(matrix); drawBitmap(bitmap, 0, 0, ...); canvas.restore(); In the original example, the matrix had a -1 scale in X. This means that all X coordinates will be negated. Thus the image will draw flipped in X, but it will also appear to the left of the Y axis, which defaults to the left edge of the view. Thus the fix was to post- translate everything to the right by at least the width of the bitmap, to make it appear on screen. Another fix could have been matrix.setScale(-1, 1); matrix.postTranslate(bitmap.getWidth(), 0); canvas.drawBitmap(bitmap, matrix, ...); mike On Nov 3, 2008, at 10:46 AM, Guolong wrote: thanks, it do work. On Nov 3, 1:44 pm, Romain Guy [EMAIL PROTECTED] wrote: sprite = BitmapFactory .decodeResource(appContext.getResources(),R.drawable.spritegfx); canvas.save(); canvas.scale(-1.0f, 1.0f); canvas.drawBitmap(sprite, 0,0, null); canvas.restore(); This will work but you also need to translate the image too. You are just drawing it outside of the canvas. On Sun, Nov 2, 2008 at 8:42 AM, Guolong [EMAIL PROTECTED] wrote: hello, I want to draw a fliped image and try following code: sprite = BitmapFactory .decodeResource(appContext.getResources(),R.drawable.spritegfx); Matrix temp1=new Matrix(); temp1.preScale(-1.0f,1.0f); canvas.drawBitmap(sprite, temp1, null); But it does not work. neither work for the following code: sprite = BitmapFactory .decodeResource(appContext.getResources(),R.drawable.spritegfx); canvas.save(); canvas.scale(-1.0f, 1.0f); canvas.drawBitmap(sprite, 0,0, null); canvas.restore(); Any idea for this problem please? Any way, following code do work. sprite = BitmapFactory .decodeResource(appContext.getResources(),R.drawable.spritegfx); Matrix temp1=new Matrix(); temp1.preScale(-1.0f,1.0f); flipedSprite = Bitmap.createBitmap(sprite , 0, 0, sprite .getWidth(), sprite .getHeight(), temp1, false); canvas.drawBitmap(flipedSprite , 0,0, null); But I just don't want to create a new bitmap for every fliped image because there're a lot of fliped or mirrored image in my program. -- Romain Guywww.curious-creature.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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Updating Imageviews During functions
ImageView, like all subclass of View, cannot be called from any thread
other than the UI thread.
That said, what is the update you are try to do?
On Oct 28, 2008, at 10:24 AM, Mark Hansen wrote:
Opps.. I start the Runnable with the following:
mHandler.post(mUpdateTimeTask);
forgot to add that..
On Oct 28, 10:12 am, Mark Hansen [EMAIL PROTECTED] wrote:
Some more info:
I declared a handler in my class:
private Handler mHandler = new Handler();
Then added my runnable
private Runnable mUpdateTimeTask = new Runnable() {
public void run() {
updateDisplay.sendEmptyMessage(0);
}
};
and have a handler that does my update...
private Handler updateDisplay = new Handler() {
public void handleMessage(Message msg) {
// ImageView update is here...
}
};
The image views are still not updating from what I can tell until the
rest of the activity completes.
I've tried variations implementing runnable and spawning threads
(which works well with progress dialogs) and still can't get it to
work.
Basically I want to quickly change some ImageViews almost like an
animation or a clock in with an activity.. is there a better method of
doing this?
Thanks,
Mark
On Oct 27, 5:44 pm, Mark Hansen [EMAIL PROTECTED] wrote:
I have some image views I'd like to update as somethings change in a
function in an activity.
I can't seem to get them to refresh, at least not in away that
appears
visible on the phone.
I've tried running them in a seperate thread, and even from that
thread using a custom handler to do the image update, but still no
dice.
Anyone have any tips for doing this?
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[android-developers] Re: Copying an area from a drawable
The way to copy a drawable into a bitmap is to draw it there.
void draw(Drawable dr, Bitmap bm, int left, int top) {
Canvas c = new Canvas(bm);
c.translate(-left, -top);
dr.draw(canvas);
}
void loop() {
Drawable dr = // your master drawable
dr.setBounds(0, 0, 320, 320);
for (int y = 0; y 10; y++) {
for (int x = 0; x 10; x++) {
Bitmap bm = // the bitmap at cell location (x, y)
draw(dr, bm, x * 32, y * 32);
}
}
}
mike
On Oct 27, 2008, at 11:57 AM, PorkChop wrote:
OK thanks Ludwig.
On 27 Oct, 11:25, Ludwig [EMAIL PROTECTED] wrote:
I am not entirely sure if this is what you are looking for, but the
Canvas
has a method where you can specify the a source and destination
rectangle to
draw from and to:
public void
drawBitmap(Bitmapfile:///C:/Software/android/docs/reference/android/graphics/Bitmap.html
bitmap,
Rectfile:///C:/Software/android/docs/reference/android/graphics/Rect.html
src,
Rectfile:///C:/Software/android/docs/reference/android/graphics/Rect.html
dst,
Paintfile:///C:/Software/android/docs/reference/android/graphics/Paint.html
paint)
HTH
Ludwig
2008/10/26 PorkChop [EMAIL PROTECTED]
What I am trying to achieve is breaking a drawable down into an array
of separate bitmaps. E.g. I am passing a grid of 32x32 images (lets
say the image is 320x320 pixels and contains a grid of 10x10 smaller
bimap images) and i want to create an array of 100 bitmaps.
So I need to copy from (eg) x=32, y=32, w=32,h=32 into another bitmap
which is 32x32 pixels. Anyone got any idea how to do this? Hope I
have
explained this well enough.
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[android-developers] Re: image manipulation
At the low-level, take a look at android.graphics.ColorMatrix On Oct 16, 2008, at 8:11 PM, j wrote: Does Android come with any package/classes for image manipulations (e.g. contrast, brightness adjustments)? 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: WebView loadData limitations
The Browser app does not have permission to load a page from the SD card. You can write an app with a WebView, and give yourself that permission, but the Browser is built explicitly w/o that right for security reasons. On Oct 15, 2008, at 3:41 PM, Rubicks wrote: I am trying to get a html file stored in my sdcard image on to webview . I am doing something like this myWebView.loadUrl(/sdcard/index.html); Then I get an error on the webview as The webpage at file:///sdcard/index.html could not be loaded as: The requested file was not found. But I am sure I have index.html on my sdcard image and it is available to the emulator. Because I see it on the File explorer. I tried myWebView.loadUrl(file:///sdcard/index.html); as well. Still the same problem exists. If I have to use loadDataWithBaseUrl(), then I think, I need to convert index.html to a string, which I don't want to. I could not figure out the problem. Any one any thoughts? Thanks. On Oct 3, 8:37 pm, schmielson [EMAIL PROTECTED] wrote: Thanks a ton for your comments, Mark. I've filed a bug:http://code.google.com/p/android/issues/detail?id=929 . Best, Dave On Oct 1, 5:29 am, Mark Murphy [EMAIL PROTECTED] wrote: schmielson wrote: As it turns out, the android:layout_height=wrap_content used along with android:layout_weight=1 of the WebView was preventing the WebView from properly receiving events! After changing the WebView's layout_height attribute to 0px instead of wrap_content, shouldOverrideUrlLoading is being called and things work like a charm. This bug was particularly insidious, however, since I never would have expected that these attributes would have altered the view's ability to process clicks/touches in this way. That is definitely strange. There might be a method to the madness there, but off the cuff, I don't see it. Do you think this is an SDK bug or a documentation bug? Ummm...yes. ;-) In other words, it depends a little on why it's not working. The fact that you not only see the WebView, but can interact with it, suggests to me it's an SDK bug. However, one man's SDK bug can be an Android team member's documentation bug, if this is somehow expected behavior. I do recommend filing a bug, though, just to get this in the queue to get looked at. -- Mark Murphy (a Commons Guy)http://commonsware.com Android Training on the Ranch! -- Mar 16-20, 2009http://www.bignerdranch.com/schedule.shtml --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Mirror effect on TextView
Is all of the text drawing offscreen to the left? Do you need to also
translate to the right?
On Oct 8, 2008, at 4:57 PM, stef wrote:
HI,
Trying to write a mirror image of some text.
I created a new widget derived from TextView and the overridden
onDraw(Canvas canvas) looks like
@Override
protected void onDraw(Canvas canvas) {
canvas.scale(-1.0f, 1.0f);
super.onDraw(canvas);
}
I would expect to see the text flipped around the x axis (mirror
effect) but nothing shows up...
canvas.scale(1.0f, 1.0f) show the text as expected... what is wrong
with that code?
Thanks
Stephane
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[android-developers] Re: _SAVE_FLAGs and Canvas.save(int saveFlags)
There are two calls that take save flags, save() and saveLayer(). Only the first two flags are meaningful for save() : MATRIX and CLIP. The others are legal, but are ignored. saveLayer() has more options, including HAS_ALPHA - request that the layer has per-pixel alpha FULL_COLOR - request that the layer has at least 8bits per component CLIP_TO_LAYER - clip drawing to just the layer On Mon, Oct 6, 2008 at 5:12 AM, sahn0 [EMAIL PROTECTED] wrote: I need a clarification on which _SAVE_FLAG values can go into save(int saveFlags) method. As I understand, I can specify only two of them - MATRIX_SAVE_FLAG and CLIP_SAVE_FLAG. What about other values? Are they used internally? Maybe they should be private then? --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: skia : error in decode file
Can you include more of the code snippet? On Oct 3, 2008, at 12:09 PM, Sudha wrote: Hi I had a strange problem I am reading the images from the sdcard which are taken using the camera in a for loop . 1st image is coming fine and from second image onwards I am getting skia fialure readaeing skia jpeg setjump exit I am reading the image as imageShow = BitmapFactory.decodeFile(+imageNames[position]); I tried decodeStream() ,decodeBytearay etc same isssues repeats but the first image is coming proper.. Plz help mee I am using 0.9 sdk --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Working with Images
True. If you have the large image already decoded, calling canvas.drawBitmap(bitmap, srcRect, dstRect, paint); allows you to draw just a section of it (specified by srcRect). The above call does all the clipping etc. for you (and more efficiently than if you did the clipping yourself). On Sep 30, 2008, at 10:07 PM, Steve Oldmeadow wrote: If I understand your question correctly you just want: Bitmap.createBitmap(Bitmap source, int x, int y, int width, int height) where source will be your 1500x1500 bitmap, x and y are the top left of the sub image and width and height are the width and height of the sub image. Memory could be an issue though particularly if you are going to keep a lot of sub images in memory. Don't forget that you can draw sub sections of an image to a canvas using clipping so maybe you don't need to create a new sub image. --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Bitmap on sdcard decodestream
That is a correct way to call decodeStream. Are you sure the path is
correct (i.e. are you getting a non-null fileinputstream)?
On Sep 30, 2008, at 5:17 AM, Matteo Crippa wrote:
Easy i was playing with a little app i'm developing but i've just
found a little problem... let's explain me it...
I created a sdcard and inside it I placed some jpg files.
So my data path is something like:
/sdcard/app/img/1.jpg
/sdcard/app/img/2.jpg
/sdcard/app/img/3.jpg
/sdcard/app/img/4.jpg
[...]
/sdcard/app/img/n.jpg
Now I want to create a gallery app to show out these files, I looked
at demo srcs by android sdk, but they always use imgs from
resources...
I decided to try using Bitmapfactory.decodeFile and also
Bitmapfactory.decodestream but both seems not to work fine returning a
NullPointerException
Here you are a little snippet of my app:
Java:
for(int i=0;iimgsTokens.length;i++)
{
Log.d(+i,/sdcard/app/img/+imgsTokens[i]
+.jpg);
try
{
FileInputStream is = new FileInputStream(new
File(/sdcard/app/img/+imgsTokens[i]+.jpg));
BufferedInputStream bis = new
BufferedInputStream(is);
photos[i] = BitmapFactory.decodeStream(is);
bis.close();
is.close();
//photos[i] = BitmapFactory.decodeFile(/
sdcard/app/img/+imgsTokens[i]+.jpg);
}
catch(Exception e)
{
e.printStackTrace();
}
}
any idea how to fix?
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[android-developers] Re: Bitmap on sdcard decodestream
Please file a bug for this, and attach one or more of the images and
your code snippet. That will make it much easier to diagnose.
thanks,
mike
On Sep 30, 2008, at 9:25 AM, Matteo Crippa wrote:
Hi sahn0 thanks for the tip, but it still fails with a
NullPointerException...
I tried looking at f.isFile() and it returns true... so file exists...
On 30 Set, 12:27, sahn0 [EMAIL PROTECTED] wrote:
Maybe it is jpg format that causing problems? Try converting images to
png.
On 30 сент, 16:17, Matteo Crippa [EMAIL PROTECTED] wrote:
Easy i was playing with a little app i'm developing but i've just
found a little problem... let's explain me it...
I created a sdcard and inside it I placed some jpg files.
So my data path is something like:
/sdcard/app/img/1.jpg
/sdcard/app/img/2.jpg
/sdcard/app/img/3.jpg
/sdcard/app/img/4.jpg
[...]
/sdcard/app/img/n.jpg
Now I want to create a gallery app to show out these files, I looked
at demo srcs by android sdk, but they always use imgs from
resources...
I decided to try using Bitmapfactory.decodeFile and also
Bitmapfactory.decodestream but both seems not to work fine
returning a
NullPointerException
Here you are a little snippet of my app:
Java:
for(int i=0;iimgsTokens.length;i++)
{
Log.d(+i,/sdcard/app/img/+imgsTokens[i]
+.jpg);
try
{
FileInputStream is = new FileInputStream(new
File(/sdcard/app/img/+imgsTokens[i]+.jpg));
BufferedInputStream bis = new
BufferedInputStream(is);
photos[i] = BitmapFactory.decodeStream(is);
bis.close();
is.close();
//photos[i] = BitmapFactory.decodeFile(/
sdcard/app/img/+imgsTokens[i]+.jpg);
}
catch(Exception e)
{
e.printStackTrace();
}
}
any idea how to fix?
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[android-developers] Re: Working with Images
We have no API to decode a subset of an image in 1.0, so for now you'll have to decode the entire image (with optional subsampling) On Sep 30, 2008, at 3:57 PM, xMemphisx [EMAIL PROTECTED] wrote: Hello, What i'm currently trying to do, is load a large image... lets say the dimensions are 1500x1500... but then i want to create other images FROM that loaded image, but in smaller portions... so for instance... i want to use just the pixels from [250,0] to [500,250] to make a new image (on the fly). How can this be accomplished? --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Paint.setTextSize ascent descent.
Ascent and descent are pulled from the font data, so I think stupid interpolations are you best bet. On Sep 27, 2008, at 12:18 PM, skink [EMAIL PROTECTED] wrote: hi, as abs(ascent) + descent != textSize passed to setTextSize, is there any helper function for getting what textSize to use for given abs(ascent) + descent without boring/stupid interpolations or trying various textSizes? thanks, skink --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Bitmap issue ...
There is no way to write to a bitmap in its native format in 1.0, but you can read the values by calling copyPixelsToBuffer(). This fills out the buffer with whatever the native config is (alpha_8, 565, , ). If you could extend the api post 1.0, what functionality would you like to see? mike On Sep 23, 2008, at 2:53 PM, Kurt Jacobs wrote: Mike, Thanks for the explanation. Is there a way (method that I could call) that I can convert the raw bitmap to the multiplied version because doing the setPixel? Thanks, Kurt On Tue, Sep 23, 2008 at 11:34 AM, Mike Reed [EMAIL PROTECTED] wrote: The confusion (and I will try to update the dox to make this clearer) is that the color int is in unpremultipled form, but the internal format for Bitmap pixels is premultiplied. premultiplied means that the r,g,b components have already been multiplied by their respective alpha value. Thus 50% transparent Red would be stored as 0x8080 unpremultipled means that the r,g,b components are stored in their raw form, independent of the alpha value. Thus 50% transparent Red would be stored as 0x80FF Thus when you specify 0x08040201 in unpremultiplied form (as you should for the input to setPixels), that color is internally converted to its premultiplied equivalent, which in this case happens to be 0x0800. When you call getPixels(), the values are converted back to unpremultiplied form automatically, but in this case there is no change. mike On Sep 23, 2008, at 10:40 AM, JakeMaui wrote: I have a bitmap issue. I created a simple PNG that was 1 pixel high, 16 wide pure white. I loaded the bitmap, extracted the pixels, changed the first one and then created a bitmap from the altered data. The issue is that I thought that until I save it, I would have a raw bitmap will all the bits set as I had set them. I found that the bits changed. Does anybody know what I need to do to preserve the bitmap with the bits that I set into it? sample code ... int picw= bitmap.getWidth(); int pich=bitmap.getHeight(); int[] pix = new int[picw*pich]; bitmap.getPixels(pix, 0, picw, 0, 0, picw, pich); // It's pure white at this point. // I set the first byte to this but when I pull it out of the newly constructed // bitmap, it's 0x800 pix[0]=0x08040201; createdBitmap = Bitmap.createBitmap(picw, pich, Bitmap.Config.ARGB_); createdBitmap.setPixels(pix, 0, picw, 0, 0, picw, pich); // get pixels of newly created bitmap int picw=embeddedBitmap.getWidth(); int pich=embeddedBitmap.getHeight(); int[] pix = new int[picw*pich]; createdBitmap.getPixels(pix, 0, picw, 0, 0, picw, pich); Results 1000 0100 0010 0001 before 1000 000 --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Does Android support Chinese Traditional Language?
Android is unicode based, so any text will need to be transcoded into that. The fallback font in 1.0 supports much of the Simplified Chinese character set, but not complete. Are you having specific problems? mike On Sep 23, 2008, at 9:17 AM, Ludwig wrote: I have at least no trouble displaying Simplified Chinese characters on the screen (I do not have traditional chars installed, so I cannot check those). Using Eclipse I simply change my IME and type in Chinese text into the resource strings and they appear correctly on the screen (at least in default font). Ludwig 2008/9/23 Dennis [EMAIL PROTECTED] Does Android support Chinese Traditional Language(Big5)? --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Bitmap issue ...
The confusion (and I will try to update the dox to make this clearer) is that the color int is in unpremultipled form, but the internal format for Bitmap pixels is premultiplied. premultiplied means that the r,g,b components have already been multiplied by their respective alpha value. Thus 50% transparent Red would be stored as 0x8080 unpremultipled means that the r,g,b components are stored in their raw form, independent of the alpha value. Thus 50% transparent Red would be stored as 0x80FF Thus when you specify 0x08040201 in unpremultiplied form (as you should for the input to setPixels), that color is internally converted to its premultiplied equivalent, which in this case happens to be 0x0800. When you call getPixels(), the values are converted back to unpremultiplied form automatically, but in this case there is no change. mike On Sep 23, 2008, at 10:40 AM, JakeMaui wrote: I have a bitmap issue. I created a simple PNG that was 1 pixel high, 16 wide pure white. I loaded the bitmap, extracted the pixels, changed the first one and then created a bitmap from the altered data. The issue is that I thought that until I save it, I would have a raw bitmap will all the bits set as I had set them. I found that the bits changed. Does anybody know what I need to do to preserve the bitmap with the bits that I set into it? sample code ... int picw= bitmap.getWidth(); int pich=bitmap.getHeight(); int[] pix = new int[picw*pich]; bitmap.getPixels(pix, 0, picw, 0, 0, picw, pich); // It's pure white at this point. // I set the first byte to this but when I pull it out of the newly constructed // bitmap, it's 0x800 pix[0]=0x08040201; createdBitmap = Bitmap.createBitmap(picw, pich, Bitmap.Config.ARGB_); createdBitmap.setPixels(pix, 0, picw, 0, 0, picw, pich); // get pixels of newly created bitmap int picw=embeddedBitmap.getWidth(); int pich=embeddedBitmap.getHeight(); int[] pix = new int[picw*pich]; createdBitmap.getPixels(pix, 0, picw, 0, 0, picw, pich); Results 1000 0100 0010 0001 before 1000 000 --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Saving a bitmap
Bitmap.compress(...) This will write the bitmap to an OutputStream, compressed as either JPEG or PNG On Fri, Sep 19, 2008 at 6:07 AM, Teo [EMAIL PROTECTED] wrote: Hi, is there a way to save the bitmap to an image file (and also load one from an image file) ? I'm working on this SDK example: http://code.google.com/android/samples/ApiDemos/src/com/android/samples/graphics/TouchPaint.html Thanks, Teo --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: 3D and 2D on same view
See SurfaceViewOverlay.java sample code. On Fri, Sep 19, 2008 at 5:00 AM, Shraddha Bhaskare [EMAIL PROTECTED] wrote: Hi, I need to know if 2D and 3D can co-exist on the same view. Can we have 2D and 3D views on the same screen? Thanks in advance Shraddha --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: How float coordinates are mapped to pixels (rounded)?
Correct On Sep 11, 2008, at 8:27 AM, sahn0 wrote: How exactly float coordinates are mapped to pixels (provided that there is no transformation)? I guess they are rounded in a good old fashion way: (int) (floatCoordiate+0.5f). Am I correct? --~--~-~--~~~---~--~~ 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: drawLine is broken
Might be a bug. Can you put a more complete code snippet (including
how the paint (p) was setup) into the bug?
thanks,
mike
On Sep 11, 2008, at 8:20 AM, sahn0 wrote:
Consider two ways to draw a rectangle:
//-
int x=10;
int y=10;
int w=2;
int h=2;
canvas.drawRect(x,y,x+w,y+h,p); // (1)
float[] lines=new float[]{
x,y,x+w,y,
x+w,y,x+w,y+h,
x+w,y+h,x,y+h,
x,y+h,x,y
};
canvas.drawLines(lines,p); // (2)
//-
You may think that they both produce same rectagle, but you would be
wrong.
Call (2) draws a rectangle without bottom-right pixel. (Call (1) draws
rectangle correctly.)
This is because drawLine doesn't draw endpoint's pixel. So
drawLine(0,0,2,0) draws 2 pixels, not three. Hence the missing pixel
at the bottom-right (drawLines also sorts points, so bottom line is
drawn from (x,y+h) to (x+w,y+h)).
This behaviour is different from J2ME's J2SE's, where drawLine
always draws both endpoints, and drawing rectange with drawLine
produces same result as drawRect.
The question is: is this a bug?
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[android-developers] Re: drawLine is broken
The general confusion is that the android graphics geometry is center- line based, and consistent at all matrix transformations, while J2ME linedrawing is more pen based. As an example, when android draws a line, it basically constructs a rectangle about the line, by moving parallel to the line by 1/2 the strokeWidth. If there is no fancy Join (e.g. Square or Round), no outset is performed on the line's ends. So for the line (0,0) (0,2), it constructs the rectangle // assuming the strokeWidth is 1.0 left = 0 top = -1/2 right = 2 bottom = 1/2 and then tries to fill the rectangle, using the standard of rounding each coordinate to an int via (int)(coord + 0.5) // for positive coords That said, in your example, the strokeWidth is 0, which is a special value meaning hairline. This is pretty close to 1.0, but will draw slightly differently at times, but much faster. (aside: hairline stroking always draws 1-pixel wide, regardless of the matrix on the canvas). Stroking rectangles in hairline mode does a little extra work to be nice to try to hit all of the corners, even if the normal hairline drawLine path would have missed it. But back to center-line geometry. The upshot really is, if you want to trivially predict what pixels will be hit for stroking, put your geometry on 1/2 pixel boundaries. Then when I outset by 1/2 the strokeWidth, the center-line pixel will always get hit. mike On Sep 11, 2008, at 9:12 AM, sahn0 wrote: Yes, p is Paint object set up as follows: Paint p=new Paint(); p.setColor(0xFF80); p.setStyle(Paint.Style.STROKE); Style.STROKE is needed for drawRect to actually draw rect, issue with right-bottom pixel shows itself independently of Style. On 11 сент, 19:48, Mike Reed [EMAIL PROTECTED] wrote: Might be a bug. Can you put a more complete code snippet (including how the paint (p) was setup) into the bug? thanks, 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: drawLine is broken
/* oops, the rect example I gave is for (0,0) (2,0) */ On Sep 11, 2008, at 9:27 AM, Mike Reed wrote: The general confusion is that the android graphics geometry is center- line based, and consistent at all matrix transformations, while J2ME linedrawing is more pen based. As an example, when android draws a line, it basically constructs a rectangle about the line, by moving parallel to the line by 1/2 the strokeWidth. If there is no fancy Join (e.g. Square or Round), no outset is performed on the line's ends. So for the line (0,0) (0,2), it constructs the rectangle // assuming the strokeWidth is 1.0 left = 0 top = -1/2 right = 2 bottom = 1/2 and then tries to fill the rectangle, using the standard of rounding each coordinate to an int via (int)(coord + 0.5) // for positive coords That said, in your example, the strokeWidth is 0, which is a special value meaning hairline. This is pretty close to 1.0, but will draw slightly differently at times, but much faster. (aside: hairline stroking always draws 1-pixel wide, regardless of the matrix on the canvas). Stroking rectangles in hairline mode does a little extra work to be nice to try to hit all of the corners, even if the normal hairline drawLine path would have missed it. But back to center-line geometry. The upshot really is, if you want to trivially predict what pixels will be hit for stroking, put your geometry on 1/2 pixel boundaries. Then when I outset by 1/2 the strokeWidth, the center-line pixel will always get hit. mike On Sep 11, 2008, at 9:12 AM, sahn0 wrote: Yes, p is Paint object set up as follows: Paint p=new Paint(); p.setColor(0xFF80); p.setStyle(Paint.Style.STROKE); Style.STROKE is needed for drawRect to actually draw rect, issue with right-bottom pixel shows itself independently of Style. On 11 сент, 19:48, Mike Reed [EMAIL PROTECTED] wrote: Might be a bug. Can you put a more complete code snippet (including how the paint (p) was setup) into the bug? thanks, 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: drawLine is broken
In some ways, android.graphics renders more like Quartz/PostScript than like QuickDraw/AWT On Sep 11, 2008, at 9:41 AM, sahn0 wrote: Thanks for the explanation. Now I need to comprehend it :) On 11 сент, 20:28, Mike Reed [EMAIL PROTECTED] wrote: /* oops, the rect example I gave is for (0,0) (2,0) */ On Sep 11, 2008, at 9:27 AM, Mike Reed wrote: The general confusion is that the android graphics geometry is center- line based, and consistent at all matrix transformations, while J2ME linedrawing is more pen based. As an example, when android draws a line, it basically constructs a rectangle about the line, by moving parallel to the line by 1/2 the strokeWidth. If there is no fancy Join (e.g. Square or Round), no outset is performed on the line's ends. So for the line (0,0) (0,2), it constructs the rectangle // assuming the strokeWidth is 1.0 left = 0 top = -1/2 right = 2 bottom = 1/2 and then tries to fill the rectangle, using the standard of rounding each coordinate to an int via (int)(coord + 0.5) // for positive coords That said, in your example, the strokeWidth is 0, which is a special value meaning hairline. This is pretty close to 1.0, but will draw slightly differently at times, but much faster. (aside: hairline stroking always draws 1-pixel wide, regardless of the matrix on the canvas). Stroking rectangles in hairline mode does a little extra work to be nice to try to hit all of the corners, even if the normal hairline drawLine path would have missed it. But back to center-line geometry. The upshot really is, if you want to trivially predict what pixels will be hit for stroking, put your geometry on 1/2 pixel boundaries. Then when I outset by 1/2 the strokeWidth, the center-line pixel will always get hit. mike On Sep 11, 2008, at 9:12 AM, sahn0 wrote: Yes, p is Paint object set up as follows: Paint p=new Paint(); p.setColor(0xFF80); p.setStyle(Paint.Style.STROKE); Style.STROKE is needed for drawRect to actually draw rect, issue with right-bottom pixel shows itself independently of Style. On 11 сент, 19:48, Mike Reed [EMAIL PROTECTED] wrote: Might be a bug. Can you put a more complete code snippet (including how the paint (p) was setup) into the bug? thanks, 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
[android-developers] Re: Removal of javax.microedition.lcdui.Graphics
True, android.graphics does not have the top/bottom feature, but with Paint.getFontMetrics(), you can compute all sorts of interesting vertical metrics for the font, and apply them to the baseline. mike On Sep 11, 2008, at 10:24 AM, JT wrote: I would refrain from using any javax.microedition.* classes. You can set alignment via android.graphics.Paint.Align, however it does not have the same top/bottom feature as J2ME. http://code.google.com/android/reference/android/graphics/Paint.Align.html On Sep 10, 8:51 pm, Sudha [EMAIL PROTECTED] wrote: I was using M5 .Now I switched my application to SDK 0.9. I am getting the error on eclipse that the import javax.microedition.lcdui.Graphics cannot be resolved. In my program I am using the Graphics.TOP|Grpahics.LEFT. Can any one help me to find whether that option is removed , why and anywhere else it is implemented ? 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 [EMAIL PROTECTED] For more options, visit this group at http://groups.google.com/group/android-developers?hl=en -~--~~~~--~~--~--~---
