Why don't you take out the recycle() calls altogether and see if it works?
Even if you assign after recycling, the following could happen: *bitmap.recycle();* * * *---- thread switch ----* * * *other thread tries to use bitmap* On Monday, March 18, 2013 12:50:37 PM UTC-5, Marina Cuello wrote: > > Hi! > I'm having a weird problem with one of my apps. I'll try later to extract > some code and make a sample project to share if it's useful but by now I'm > just asking to see if anyone found this one or can give me a hint on how > to tackle it. > > I have two activities. > > Activity A extends SherlockActivity from ActionBarSherlock and haves a > GridView on it. The grid items have an ImageButton. When you press on the > ImageButton, it calls an instance of Activity B. > > Activity B extends SherlockFragmentActivity (ActionBarSherlock again), > with a ViewPager on it. The fragments have a very complex layout. > > My Activity B has a menu with only one item. The item is set-up on > onOptionsItemSelected so it simply calls "onBackPressed()". That one calls > "super.onBackPressed()" right away. I've only overridden it for debugging > purposes. > > I tested it on some Jelly Bean devices and on a couple Gingerbread ones > (I'm using some co-workers phones as test devices :)). On Jelly Bean it's > ok. But in Gingerbread I've met a weird behaviour. > > When I'm on B, and press the back button on the device, it closes B and > goes normally to A. But, if I press the option on the menu, I've got a > "force close" message and I've got the following log: > > java.lang.RuntimeException: Canvas: trying to use a recycled bitmap > android.graphics.Bitmap@2b021388 > at android.graphics.Canvas.throwIfRecycled(Canvas.java:955) > at android.graphics.Canvas.drawBitmap(Canvas.java:1044) > at android.graphics.drawable.BitmapDrawable.draw(BitmapDrawable.java:325) > at android.widget.ImageView.onDraw(ImageView.java:881) > at android.view.View.draw(View.java:6986) > at android.view.ViewGroup.drawChild(ViewGroup.java:1739) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.ViewGroup.drawChild(ViewGroup.java:1737) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.View.draw(View.java:6989) > at android.widget.FrameLayout.draw(FrameLayout.java:361) > at android.view.ViewGroup.drawChild(ViewGroup.java:1739) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.View.draw(View.java:6989) > at android.widget.FrameLayout.draw(FrameLayout.java:361) > at android.view.ViewGroup.drawChild(ViewGroup.java:1739) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.ViewGroup.drawChild(ViewGroup.java:1737) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.View.draw(View.java:6989) > at android.support.v4.view.ViewPager.draw(ViewPager.java:1923) > at android.view.ViewGroup.drawChild(ViewGroup.java:1739) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.ViewGroup.drawChild(ViewGroup.java:1737) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.ViewGroup.drawChild(ViewGroup.java:1737) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.ViewGroup.drawChild(ViewGroup.java:1737) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.ViewGroup.drawChild(ViewGroup.java:1737) > at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466) > at android.view.View.draw(View.java:6989) > at android.widget.FrameLayout.draw(FrameLayout.java:361) > at > com.android.internal.policy.impl.PhoneWindow$DecorView.draw(PhoneWindow.java:1882) > at android.view.ViewRoot.draw(ViewRoot.java:1544) > at android.view.ViewRoot.performTraversals(ViewRoot.java:1280) > at android.view.ViewRoot.handleMessage(ViewRoot.java:1882) > at android.os.Handler.dispatchMessage(Handler.java:99) > at android.os.Looper.loop(Looper.java:130) > at android.app.ActivityThread.main(ActivityThread.java:3701) > at java.lang.reflect.Method.invokeNative(Native Method) > at java.lang.reflect.Method.invoke(Method.java:507) > at > com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:866) > at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:624) > at dalvik.system.NativeStart.main(Native Method) > > The stack seems to relate to my Activity B structure. My app loads puts > large images on screen, so I have a couple "recycle()" calls on the > fragments that take part of Activity B, but they're all inside > "!bitmap.isRecycled()" conditions, and they're all around the first steps > on the activity and fragments life cycle. Anyway, there is no recycle() > call in my whole project that it's not followed by some assignation, either > with null or with some generated bitmap. > > When I debugged the exception didn't fire there. It just appears to be > "nowhere", jumping outright from the last line on my "onPause()" on > Activity B to the runtime exception. > > To add some debug chance, I've set a handler > with setDefaultUncaughtExceptionHandler to check what the behaviour would > be after the Exception is thrown, and what I see is: > > * In a Samsung device with a Mod Gingerbreas, first the option on the menu > on Activity B disappearing, then the Activity B dissapearing into to > background, a black screen and just a couple seconds later I get an ANR. > * In an unrooted Sony device , I've got to the Activity A screen looking > just as if everything is OK, but there is no responsiveness at all and soon > I got to the ANR too. > > I know my question it's really feeble, but I just can't see how to find > where the exception is throwing. Any clues? > > Thanks! > > Marina > > > > > -- -- You received this message because you are subscribed to the Google Groups "Android Developers" group. 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