Dianne, I suspect you are right, though I'm having a heck of a time tracking it down (i.e., I don't see any leaks). Thanks for the info on the wallpaper!
Cheers, Steve On Aug 17, 12:47 pm, Dianne Hackborn <[email protected]> wrote: > The wallpaper is loaded into each application that requests it. It is only > loaded the first time you ask for it, and the next time after it is changed > to some other image. > > You are probably leaking memory. You can use the hat tool to look at your > allocations -- search on this list, there have been a number of discussions > about it. > > > > > > On Mon, Aug 17, 2009 at 9:38 AM, Flying Coder <[email protected]> wrote: > > > Hi Nivek, > > Unfortunately, doing recycle on the drawable returned by > > ContextWrapper.getWallpaper() results in a run-time exception the next > > time the app is launched: attempt to use recycled bitmap. Though > > curiously, if I launch the app again after receiving the exeption, it > > works fine. I.e., run time exception every other launch. > > > At any rate, thanks for the pointer to Romain Guy's blog -- I > > wasn't aware of the onRetainNonConfigurationInstance method. Should > > be useful in some cases. > > > Cheers, > > Steve > > > On Aug 17, 10:53 am, Nivek <[email protected]> wrote: > > > When you change the device orientation, you app is closed and then > > > reopened. > > > > Android handles bitmaps a "special" way, you HAVE to explicitly > > > recycle them as soon as you don't need them anymore... or they stay > > > allocated in memory and NEVER get freed. > > > > I have started to code an app which uses a set of ImageViews. To avoid > > > allocation errors on orientation changes, I had to override the > > > onDestroy() method this way : > > > /* > > > * (non-Javadoc) > > > * > > > * @see android.app.Activity#onDestroy() > > > */ > > > @Override > > > protected void onDestroy() { > > > super.onDestroy(); > > > if (isFinishing()) { > > > for (ImageView view : mImgViews) { > > > Drawable toRecycle = view.getDrawable > > > (); > > > if (toRecycle != null) { > > > ((BitmapDrawable) > > > toRecycle).getBitmap().recycle(); > > > } > > > } > > > } > > > } > > > > After this, If the orientation change time is too long, you have to > > > store the data (bitmaps and whatever else you need) with > > > onRetainNonConfigurationInstance() and get them back on reinit with > > > getLastNonConfigurationInstance(). > > > > This has been explained by Romain Guy on his blog : > >http://www.curious-creature.org/2009/02/16/faster-screen-orientation-... > > > > On 17 août, 15:58, Flying Coder <[email protected]> wrote: > > > > > This has been driving me nuts and I'm hoping someone will be able to > > > > help me understand what is happening (or better yet, how to fix > > > > it! ;-). > > > > > I set the background image in one of my apps to the system wallpaper > > > > image using the following code: > > > > > Drawable wp = this.getWallpaper(); > > > > background = (ImageView) findViewById(R.id.background); > > > > background.setImageDrawable(wp); > > > > > This seems to work fine, but periodically, I get the out of memory > > > > error shown below. Actually, on the emulator, all I have to do is > > > > repeatedly rotate the device and this error will consistently happen > > > > after 10-12 rotations. On the G1, opening and closing the keyboard > > > > doesn't seem to cause this, but I'll still get the failure every once > > > > in a while. > > > > > Is getWallpaper() actually making a copy of the image (I would have > > > > thought I'd just get a refernece to the existing bitmap)? Do I need > > > > to do anything special to free the image? > > > > > 08-17 08:32:37.943: ERROR/dalvikvm-heap(1597): 614400-byte external > > > > allocation too large for this process. > > > > 08-17 08:32:37.943: ERROR/(1597): VM won't let us allocate 614400 > > > > bytes > > > > 08-17 08:32:38.054: DEBUG/AndroidRuntime(1597): Shutting down VM > > > > 08-17 08:32:38.054: WARN/dalvikvm(1597): threadid=3: thread exiting > > > > with uncaught exception (group=0x4000fe70) > > > > 08-17 08:32:38.054: ERROR/AndroidRuntime(1597): Uncaught handler: > > > > thread main exiting due to uncaught exception > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): > > > > java.lang.OutOfMemoryError: bitmap size exceeds VM budget > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.graphics.BitmapFactory.nativeDecodeFileDescriptor(Native > > > > Method) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.graphics.BitmapFactory.decodeFileDescriptor(BitmapFactory.java: > > > > 424) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.app.ApplicationContext.getCurrentWallpaperLocked > > > > (ApplicationContext.java:523) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.app.ApplicationContext.peekWallpaper(ApplicationContext.java: > > > > 515) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.app.ApplicationContext.getWallpaper(ApplicationContext.java: > > > > 504) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.content.ContextWrapper.getWallpaper(ContextWrapper.java:201) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at ....onCreate > > > > (MyApp.java:247) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.app.Instrumentation.callActivityOnCreate(Instrumentation.java: > > > > 1123) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.app.ActivityThread.performLaunchActivity(ActivityThread.java: > > > > 2231) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.app.ActivityThread.handleLaunchActivity(ActivityThread.java: > > > > 2284) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.app.ActivityThread.access$1800(ActivityThread.java:112) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.app.ActivityThread$H.handleMessage(ActivityThread.java:1692) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.os.Handler.dispatchMessage(Handler.java:99) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.os.Looper.loop(Looper.java:123) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > android.app.ActivityThread.main(ActivityThread.java:3948) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > java.lang.reflect.Method.invokeNative(Native Method) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > java.lang.reflect.Method.invoke(Method.java:521) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run > > > > (ZygoteInit.java:782) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > com.android.internal.os.ZygoteInit.main(ZygoteInit.java:540) > > > > 08-17 08:32:38.313: ERROR/AndroidRuntime(1597): at > > > > dalvik.system.NativeStart.main(Native Method)- Hide quoted text - > > > > - Show quoted text - > > -- > Dianne Hackborn > Android framework engineer > [email protected] > > Note: please don't send private questions to me, as I don't have time to > provide private support, and so won't reply to such e-mails. All such > questions should be posted on public forums, where I and others can see and > answer them.- Hide quoted text - > > - Show quoted text - --~--~---------~--~----~------------~-------~--~----~ You received this message because you are subscribed to the Google Groups "Android Developers" group. To post to this group, send email to [email protected] 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 -~----------~----~----~----~------~----~------~--~---
