My app crashes when scrolling a pop-up

StackOverflow https://stackoverflow.com/questions/22280743

  •  11-06-2023
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Question

I'm developing an android app that requires me to get some images from a server in order to display it in a scrollable pop-up once that pop-up is requested by the user, i'm trying to get all the images using universalImageLoader and storing them as a Bitmaps but when getting the images and also after i got all of it, i got infinite displaying of GC_FOR_ALLOC lines, and when pressing the button that displays the pop_up, the pop_up displayed normally but when begin to scroll down my app crashes and i got the following log messages:

??-?? ??:??:??.???: INFO/<unknown>(<unknown>): *** *** *** *** *** *** *** *** *** *** *** *** *** *** *** ***
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): [ 03-09 08:57:40.758   107:  107 I/DEBUG    ]
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Build fingerprint: 'generic/vbox86tp/vbox86tp:4.3/JLS36G/eng.buildbot.20140128.092034:userdebug/test-keys'
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): [ 03-09 08:57:40.758   107:  107 I/DEBUG    ]
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Revision: '0'
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): [ 03-09 08:57:40.758   107:  107 I/DEBUG    ]
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): pid: 2269, tid: 2269, name: xample.solaceap  >>> com.example.solaceap <<<
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): [ 03-09 08:57:40.758   107:  107 I/DEBUG    ]
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): signal 11 (SIGSEGV), code 2 (SEGV_ACCERR), fault addr 97808030
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): [ 03-09 08:57:40.898   107:  107 I/DEBUG    ]
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     eax 00000000  ebx b757b6ff  ecx 0000000a  edx 9780803a
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): [ 03-09 08:57:40.898   107:  107 I/DEBUG    ]
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     esi 00000008  edi 00000001
.
.
.
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): channel '5284e038 com.example.solaceap/com.example.solaceap.Login (server)' ~ Consumer closed input channel or an error occurred.  events=0x9
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): [ 03-09 08:57:41.014   479:  518 E/InputDispatcher ]
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): channel '5284e038 com.example.solaceap/com.example.solaceap.Login (server)' ~ Channel is unrecoverably broken and will be disposed!
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): [ 03-09 08:57:41.022   479:  518 W/InputDispatcher ]
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): channel '528b7508 PopupWindow:52a6ec40 (server)' ~ Channel is unrecoverably broken and will be disposed!
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Grow heap (frag case) to 6.773MB for 196620-byte allocation
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): GC_FOR_ALLOC freed 7K, 27% free 6864K/9292K, paused 14ms, total 14ms
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Attempted to unregister already unregistered input channel '5287e6f8 com.example.solaceap/com.example.solaceap.MainPage (server)'
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Process com.example.solaceap (pid 2269) has died.
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): WIN DEATH: Window{528afe84 u0 com.example.solaceap/com.example.solaceap.Media}
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Attempted to unregister already unregistered input channel '528afe84 com.example.solaceap/com.example.solaceap.Media (server)'
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Force-removing child win Window{528b7508 u0 PopupWindow:52a6ec40} from container Window{528afe84 u0 com.example.solaceap/com.example.solaceap.Media}
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Failed looking up window
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): java.lang.IllegalArgumentException: Requested window android.os.BinderProxy@5281f9fc does not exist
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:7630)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at com.android.server.wm.WindowManagerService.windowForClientLocked(WindowManagerService.java:7621)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at com.android.server.wm.WindowState$DeathRecipient.binderDied(WindowState.java:1000)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at android.os.BinderProxy.sendDeathNotice(Binder.java:470)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at com.android.server.SystemServer.init1(Native Method)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at com.android.server.SystemServer.main(SystemServer.java:1066)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at java.lang.reflect.Method.invokeNative(Native Method)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at java.lang.reflect.Method.invoke(Method.java:525)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at com.android.internal.os.ZygoteInit$MethodAndArgsCaller.run(ZygoteInit.java:737)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at com.android.internal.os.ZygoteInit.main(ZygoteInit.java:553)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>):     at dalvik.system.NativeStart.main(Native Method)
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): WIN DEATH: null
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Late-enabling CheckJNI
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Start proc com.example.solaceap for activity com.example.solaceap/.MainPage: pid=2310 uid=10050 gids={50050, 3003, 1015, 1028}
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): GC_FOR_ALLOC freed 39K, 4% free 2502K/2604K, paused 2ms, total 2ms
??-?? ??:??:??.???: INFO/<unknown>(<unknown>): Grow heap (frag case) to 5.000MB for 2621452-byte allocation

And this is how i get the images:

ImageLoader loader = ImageLoader.getInstance();
public static Map<Integer, Bitmap> movies_bitmaps = new HashMap<Integer, Bitmap>();

loader.loadImage(url, new SimpleImageLoadingListener() {

                    @Override
                    public void onLoadingComplete(String imageUri, View view,
                            Bitmap loadedImage) {
                        try {
                            int size = loadedImage.getWidth()
                                    * loadedImage.getHeight();
                            ByteArrayOutputStream stream = new ByteArrayOutputStream(
                                    size);
                            Bitmap modified_image = Bitmap.createScaledBitmap(loadedImage, 180, 230, false);
                            modified_image.compress(Bitmap.CompressFormat.JPEG, 100,
                                    stream);
                            movies_bitmaps.put(index, modified_image);
                            loadedImage.recycle();
                            stream.close();
                            modified_image = null;
                            stream = null;
                        } catch (Exception e) {
                            e.printStackTrace();
                        }
Was it helpful?

Solution

Your code is going about doing nothing... first you create a ByteArrayOutputStream with the size equal to image width*height, which is wrong no matter how you look at it: if you were writing raw bitmap data it should be 4*width*height, but you are writing a compressed JPG, whose resultant size would not correlate with image width/height. Then you close and set the stream to null so nothing is accomplished. Then you call loadedImage.recycle() so loadedImage cannot ever be used again, but you put it in a Map with a clear intent to use it later...

Try removing loadedImage.recycle() and see if it helps, and read Android doc on Bitmap.recycle():

To answer some of your other questions in the comments:

so if that clearing the Bitmap, why the images were there then?

Per Android documenation:

This will not free the pixel data synchronously; it simply allows it to be garbage collected if there are no other references.

Basically it means if you called recycle(), subsequent behavior is undefined as far API is concerned. If memory serves, the behavior is different pre-Andorid 4.0 and post(including) Android 4.0, since they've moved the byte[] buffer backing a Bitmap from native memory space into VM managed memory space.

GC_FOR_ALLOC messages still there.

Because you are still creating lots of large objects, it's normal. If you want to reduce it, remove the ByteArrayOutputStream and associated code.

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