Attualmente sto sviluppando un'applicazione che attraversa una storia. La trama contiene "scene" che contengono più file JPEG e PNG che vengono visualizzati tramite ImageViews. Creo l'ImageView e aggiungi a esso al layout tramite la seguente funzione:Problema di memoria bitmap Android - Errore: memoria esaurita su allocazione 8294416 byte
private ImageView newImage(Show show)
{
ImageView iv = new ImageView(this);
String filePath = comin.generateFilePath(show);
Log.i(TAG, "newImage, filePath = " + filePath + " id = " + show.id);
WeakReference<Bitmap> bmp = new WeakReference<Bitmap>(scaleBitmap(filePath)); //added 4/1/13
//Bitmap bmp = scaleBitmap(filePath);
Log.i(TAG, "newImage, width = " + bmp.get().getWidth() + ", height = " + bmp.get().getHeight());
iv.setImageBitmap(bmp.get());
iv.setScaleType(ImageView.ScaleType.FIT_XY);
iv.setId(show.id);
//set visibility
if (show.visible)
iv.setVisibility(View.VISIBLE);
else
iv.setVisibility(View.INVISIBLE);
//set dimensions
int width = (app.getWidth() * show.dimX)/100;
int height = (app.getHeight() * show.dimY)/100;
RelativeLayout.LayoutParams rlp = new RelativeLayout.LayoutParams(width, height);
iv.setLayoutParams(rlp);
return iv;
}
Una volta che la scena è finita, ho poi chiaro tutti i ImageViews tranne uno, che non sono disponibili immagini e serve solo ad ascoltare per il tocco eventi.
private void clearScene(boolean clearTouch)
{
RelativeLayout parent = (RelativeLayout) findViewById(R.id.relative_layout);
logMemory("clearScene, START");
int count = parent.getChildCount();
for (int a = count - 1; a >= 0; a--)
{
int id = parent.getChildAt(a).getId();
String message = "clearScene id = " + id + ", count = " + count + ", a = " + a;
if (id == TOUCH_VIEW_ID && !clearTouch)
{
message = message + ", ignore touch screen view";
}
else
{
unbindView(parent.getChildAt(a));
parent.getChildAt(a).clearAnimation();
parent.removeView(parent.getChildAt(a));
message = message + ", unbindView, clearAnimation, removeView";
}
Log.i(TAG, message);
logMemory("clearScene, CLEARED VIEW");
}
handler.removeCallbacksAndMessages(null); //stop any future scheduled tasks from triggering
logMemory("clearScene, BEFORE TRASH COLLECTOR");
System.gc();
logMemory("clearScene, AFTER TRASH COLLECTOR");
}
Come potete vedere, chiamo il metodo unbindView(), per cercare di cancellare qualsiasi tipo di possibile perdita di memoria.
private void unbindView(View view)
{
String message = "unbindView, id = " + view.getId();
try {view.setOnClickListener(null);} catch (Throwable mayHappen) {};
try {view.setOnCreateContextMenuListener(null);} catch (Throwable mayHappen) {};
try {view.setOnFocusChangeListener(null);} catch (Throwable mayHappen) {};
try {view.setOnKeyListener(null);} catch (Throwable mayHappen) {};
try {view.setOnLongClickListener(null);} catch (Throwable mayHappen) {};
try {view.setOnClickListener(null);} catch (Throwable mayHappen) {};
if (view.getBackground() != null)
{
message = message + ", setBackgroundCallback(null)";
view.getBackground().setCallback(null);
}
if (view instanceof ImageView)
{
if (((ImageView)view).getDrawable() != null)
{
if (((ImageView)view).getDrawable() instanceof BitmapDrawable)
{
message = message + ", recycle bitmap";
((BitmapDrawable)((ImageView)view).getDrawable()).getBitmap().recycle();
}
message = message + ", setDrawableCallback(null)";
((ImageView)view).getDrawable().setCallback(null);
}
message = message + ", setImageBitmap(null), setBackgroundDrawable(null)";
((ImageView) view).setImageBitmap(null);
((ImageView) view).setBackgroundDrawable(null);
}
Log.i(TAG, message);
}
volta che tutti i ImageViews sono illimitato, ho poi eseguito il garbage collector nella funzione clearScene.
*** EDIT (4/2/13) OK, dopo alcune ricerche e prove ed errori, ho modificato la registrazione della memoria. Ecco i metodi rilevanti:
In onResume(), ho impostato un valore booleano su true a seconda della versione di Android (per determinare se utilizza la memoria nativa o Java per Bitmap), e quindi inizializzo il valore predefinito di 0 per i vecchi valori della memoria;
@Override
protected void onResume()
{
super.onResume();
if (android.os.Build.VERSION.SDK_INT >= 11) debugJavaMemory = true;
else debugNativeMemory = true;
availableJavaMemoryOld = 0;
availableNativeMemoryOld = 0;
dialogDebug();
}
Questa è la mia funzione di registrazione. Registra a seconda se la versione corrente di Android utilizza memoria nativa o Java per archiviare Bitmap.
private void logMemory(String callingFunction)
{
if (debugJavaMemory)
{
long max = Runtime.getRuntime().maxMemory()/1024;
long used = Runtime.getRuntime().totalMemory()/1024;
long available = max - used;
long change = available - availableJavaMemoryOld;
if (availableJavaMemoryOld != 0)
Log.i(TAG_MEMORY, "jMEM M:" + max + ", U:" + used + ", A:" + available + ", C:" + change + ", " + callingFunction);
availableJavaMemoryOld = available;
}
else if (debugNativeMemory)
{
long max = Debug.getNativeHeapSize()/1024;
long used = Debug.getNativeHeapAllocatedSize()/1024;
long available = max - used;
long change = available - availableNativeMemoryOld;
if (availableNativeMemoryOld != 0)
Log.i(TAG_MEMORY, "nMEM M:" + max + ", U:" + used + ", A:" + available + ", C:" + change + ", " + callingFunction);
availableNativeMemoryOld = available;
}
}
Se guardate il mio registro raccolgo da un emulatore in esecuzione Android 10 (2.3.3), il garbage collector sembra funzionare perfettamente! L'unica cosa che ho notato è strano, è che la memoria nativa massima potrebbe aumentare dinamicamente !?
Legenda: M: (memoria massima), U: (memoria utilizzata), A: (memoria disponibile), C: (cambio di memoria disponibile), funzione che ha chiamato la funzione di log
04-03 02:34:20.758: I/MEMORY(1045): nMEM M:18336, U:13287, A:5049, C:-2549, loadScene, ADDED IMAGE b:0, s:0, id:0
04-03 02:34:21.267: I/MEMORY(1045): nMEM M:21568, U:21391, A:177, C:-4872, loadScene, ADDED IMAGE b:0, s:0, id:1
04-03 02:34:35.227: I/MEMORY(1045): nMEM M:21568, U:13288, A:8280, C:8103, clearScene, CLEARED VIEW id:1
04-03 02:34:35.267: I/MEMORY(1045): nMEM M:21568, U:5184, A:16384, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:34:35.327: I/MEMORY(1045): nMEM M:21568, U:4977, A:16591, C:207, clearScene, AFTER TRASH COLLECTOR
04-03 02:34:36.067: I/MEMORY(1045): nMEM M:21568, U:13082, A:8486, C:-8105, loadScene, ADDED IMAGE b:1, s:0, id:0
04-03 02:34:47.177: I/MEMORY(1045): nMEM M:21568, U:4979, A:16589, C:8103, clearScene, CLEARED VIEW id:0
04-03 02:34:47.277: I/MEMORY(1045): nMEM M:21568, U:4978, A:16590, C:1, clearScene, AFTER TRASH COLLECTOR
04-03 02:34:47.997: I/MEMORY(1045): nMEM M:21568, U:13082, A:8486, C:-8104, loadScene, ADDED IMAGE b:1, s:1, id:0
04-03 02:34:49.307: I/MEMORY(1045): nMEM M:26224, U:21186, A:5038, C:-3448, loadScene, ADDED IMAGE b:1, s:1, id:1
04-03 02:34:50.597: I/MEMORY(1045): nMEM M:34328, U:29290, A:5038, C:0, loadScene, ADDED IMAGE b:1, s:1, id:2
04-03 02:34:51.839: I/MEMORY(1045): nMEM M:42432, U:37395, A:5037, C:-1, loadScene, ADDED IMAGE b:1, s:1, id:3
04-03 02:35:00.377: I/MEMORY(1045): nMEM M:42432, U:29293, A:13139, C:8102, clearScene, CLEARED VIEW id:3
04-03 02:35:00.387: I/MEMORY(1045): nMEM M:42432, U:21189, A:21243, C:8104, clearScene, CLEARED VIEW id:2
04-03 02:35:00.397: I/MEMORY(1045): nMEM M:42432, U:13085, A:29347, C:8104, clearScene, CLEARED VIEW id:1
04-03 02:35:00.407: I/MEMORY(1045): nMEM M:42432, U:4982, A:37450, C:8103, clearScene, CLEARED VIEW id:0
04-03 02:35:00.449: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:4, clearScene, AFTER TRASH COLLECTOR
04-03 02:35:01.217: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8105, loadScene, ADDED IMAGE b:1, s:2, id:0
04-03 02:35:23.458: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:35:23.508: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:1, clearScene, AFTER TRASH COLLECTOR
04-03 02:35:24.777: I/MEMORY(1045): nMEM M:42432, U:13082, A:29350, C:-8104, loadScene, ADDED IMAGE b:1, s:3, id:0
04-03 02:35:25.719: I/MEMORY(1045): nMEM M:42432, U:21186, A:21246, C:-8104, loadScene, ADDED IMAGE b:1, s:3, id:1
04-03 02:35:26.457: I/MEMORY(1045): nMEM M:42432, U:29291, A:13141, C:-8105, loadScene, ADDED IMAGE b:1, s:3, id:2
04-03 02:35:55.008: I/MEMORY(1045): nMEM M:42432, U:21187, A:21245, C:8104, clearScene, CLEARED VIEW id:2
04-03 02:35:55.027: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:8104, clearScene, CLEARED VIEW id:1
04-03 02:35:55.037: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:35:55.077: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:1, clearScene, AFTER TRASH COLLECTOR
04-03 02:35:55.829: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8105, loadScene, ADDED IMAGE b:1, s:4, id:0
04-03 02:35:56.427: I/MEMORY(1045): nMEM M:42432, U:21187, A:21245, C:-8104, loadScene, ADDED IMAGE b:1, s:4, id:1
04-03 02:36:00.257: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:8104, clearScene, CLEARED VIEW id:1
04-03 02:36:00.278: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:36:00.318: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:1, clearScene, AFTER TRASH COLLECTOR
04-03 02:36:01.687: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8105, loadScene, ADDED IMAGE b:1, s:5, id:0
04-03 02:36:06.437: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:36:06.487: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:1, clearScene, AFTER TRASH COLLECTOR
04-03 02:36:07.777: I/MEMORY(1045): nMEM M:42432, U:13082, A:29350, C:-8104, loadScene, ADDED IMAGE b:1, s:6, id:0
04-03 02:36:09.297: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:36:09.337: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:0, clearScene, AFTER TRASH COLLECTOR
04-03 02:36:10.727: I/MEMORY(1045): nMEM M:42432, U:13082, A:29350, C:-8104, loadScene, ADDED IMAGE b:1, s:7, id:0
04-03 02:36:20.947: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:36:20.987: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:0, clearScene, AFTER TRASH COLLECTOR
04-03 02:36:22.367: I/MEMORY(1045): nMEM M:42432, U:13082, A:29350, C:-8104, loadScene, ADDED IMAGE b:1, s:8, id:0
04-03 02:36:23.317: I/MEMORY(1045): nMEM M:42432, U:21187, A:21245, C:-8105, loadScene, ADDED IMAGE b:1, s:8, id:1
04-03 02:36:23.887: I/MEMORY(1045): nMEM M:42432, U:29291, A:13141, C:-8104, loadScene, ADDED IMAGE b:1, s:8, id:2
04-03 02:36:26.507: I/MEMORY(1045): nMEM M:42432, U:21187, A:21245, C:8104, clearScene, CLEARED VIEW id:2
04-03 02:36:26.517: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:8104, clearScene, CLEARED VIEW id:1
04-03 02:36:26.527: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:36:26.577: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:1, clearScene, AFTER TRASH COLLECTOR
04-03 02:36:27.797: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8105, loadScene, ADDED IMAGE b:1, s:9, id:0
04-03 02:36:29.248: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:36:29.287: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:1, clearScene, AFTER TRASH COLLECTOR
04-03 02:36:30.547: I/MEMORY(1045): nMEM M:42432, U:13082, A:29350, C:-8104, loadScene, ADDED IMAGE b:1, s:10, id:0
04-03 02:36:32.177: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:36:32.228: I/MEMORY(1045): nMEM M:42432, U:4978, A:37454, C:0, clearScene, AFTER TRASH COLLECTOR
04-03 02:36:33.467: I/MEMORY(1045): nMEM M:42432, U:13082, A:29350, C:-8104, loadScene, ADDED IMAGE b:1, s:11, id:0
04-03 02:36:33.977: I/MEMORY(1045): nMEM M:42432, U:21187, A:21245, C:-8105, loadScene, ADDED IMAGE b:1, s:11, id:1
04-03 02:36:34.527: I/MEMORY(1045): nMEM M:42432, U:29291, A:13141, C:-8104, loadScene, ADDED IMAGE b:1, s:11, id:2
04-03 02:36:35.058: I/MEMORY(1045): nMEM M:42432, U:37395, A:5037, C:-8104, loadScene, ADDED IMAGE b:1, s:11, id:3
04-03 02:36:41.260: I/MEMORY(1045): nMEM M:42432, U:29291, A:13141, C:8104, clearScene, CLEARED VIEW id:3
04-03 02:36:41.267: I/MEMORY(1045): nMEM M:42432, U:21187, A:21245, C:8104, clearScene, CLEARED VIEW id:2
04-03 02:36:41.278: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:8104, clearScene, CLEARED VIEW id:1
04-03 02:36:41.287: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:36:41.337: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:0, clearScene, AFTER TRASH COLLECTOR
04-03 02:36:42.618: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8104, loadScene, ADDED IMAGE b:2, s:0, id:0
04-03 02:37:00.550: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:37:00.587: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:0, clearScene, AFTER TRASH COLLECTOR
04-03 02:37:01.817: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8104, loadScene, ADDED IMAGE b:2, s:1, id:0
04-03 02:37:03.347: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:37:03.397: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:0, clearScene, AFTER TRASH COLLECTOR
04-03 02:37:04.607: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8104, loadScene, ADDED IMAGE b:2, s:2, id:0
04-03 02:37:05.258: I/MEMORY(1045): nMEM M:42432, U:21187, A:21245, C:-8104, loadScene, ADDED IMAGE b:2, s:2, id:1
04-03 02:37:07.677: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:8104, clearScene, CLEARED VIEW id:1
04-03 02:37:07.687: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:37:07.737: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:0, clearScene, AFTER TRASH COLLECTOR
04-03 02:37:09.017: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8104, loadScene, ADDED IMAGE b:2, s:3, id:0
04-03 02:37:10.327: I/MEMORY(1045): nMEM M:42432, U:21187, A:21245, C:-8104, loadScene, ADDED IMAGE b:2, s:3, id:1
04-03 02:37:13.330: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:8104, clearScene, CLEARED VIEW id:1
04-03 02:37:13.337: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:37:13.387: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:0, clearScene, AFTER TRASH COLLECTOR
04-03 02:37:14.697: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8104, loadScene, ADDED IMAGE b:2, s:4, id:0
04-03 02:37:16.037: I/MEMORY(1045): nMEM M:42432, U:21187, A:21245, C:-8104, loadScene, ADDED IMAGE b:2, s:4, id:1
04-03 02:37:17.367: I/MEMORY(1045): nMEM M:42432, U:29292, A:13140, C:-8105, loadScene, ADDED IMAGE b:2, s:4, id:2
04-03 02:37:19.087: I/MEMORY(1045): nMEM M:42432, U:37396, A:5036, C:-8104, loadScene, ADDED IMAGE b:2, s:4, id:3
04-03 02:37:44.347: I/MEMORY(1045): nMEM M:42432, U:29293, A:13139, C:8103, clearScene, CLEARED VIEW id:3
04-03 02:37:44.357: I/MEMORY(1045): nMEM M:42432, U:21189, A:21243, C:8104, clearScene, CLEARED VIEW id:2
04-03 02:37:44.367: I/MEMORY(1045): nMEM M:42432, U:13085, A:29347, C:8104, clearScene, CLEARED VIEW id:1
04-03 02:37:44.377: I/MEMORY(1045): nMEM M:42432, U:4981, A:37451, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:37:44.437: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:2, clearScene, AFTER TRASH COLLECTOR
04-03 02:37:45.667: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8104, loadScene, ADDED IMAGE b:2, s:5, id:0
04-03 02:37:46.917: I/MEMORY(1045): nMEM M:42432, U:21188, A:21244, C:-8105, loadScene, ADDED IMAGE b:2, s:5, id:1
04-03 02:37:48.167: I/MEMORY(1045): nMEM M:42432, U:29292, A:13140, C:-8104, loadScene, ADDED IMAGE b:2, s:5, id:2
04-03 02:37:49.807: I/MEMORY(1045): nMEM M:42432, U:37396, A:5036, C:-8104, loadScene, ADDED IMAGE b:2, s:5, id:3
04-03 02:38:08.239: I/MEMORY(1045): nMEM M:42432, U:29293, A:13139, C:8103, clearScene, CLEARED VIEW id:3
04-03 02:38:08.258: I/MEMORY(1045): nMEM M:42432, U:21189, A:21243, C:8104, clearScene, CLEARED VIEW id:2
04-03 02:38:08.267: I/MEMORY(1045): nMEM M:42432, U:13086, A:29346, C:8103, clearScene, CLEARED VIEW id:1
04-03 02:38:08.277: I/MEMORY(1045): nMEM M:42432, U:4982, A:37450, C:8104, clearScene, CLEARED VIEW id:0
04-03 02:38:08.317: I/MEMORY(1045): nMEM M:42432, U:4979, A:37453, C:3, clearScene, AFTER TRASH COLLECTOR
04-03 02:38:09.527: I/MEMORY(1045): nMEM M:42432, U:13083, A:29349, C:-8104, loadScene, ADDED IMAGE b:2, s:6, id:0
Come accennato , la memoria viene pulita dopo che ImageView non è associato!
Ecco il log che ho raccolto dal mio Nexus 7 rotto con Android 17 (4.2). È davvero difficile capire come viene utilizzata la memoria qui. Non è mai coerente! A volte la memoria non viene allocata quando carico ImageView. A volte la memoria viene cancellata solo quando carico un nuovo ImageView.
Legenda: M: (memoria massima), U: (memoria utilizzata), A: (memoria disponibile), C: (cambio di memoria disponibile), funzione che ha chiamato la funzione di log
04-02 22:37:05.866: I/MEMORY(15827): jMEM M:65536, U:21300, A:44236, C:0, loadScene, ADDED IMAGE b:0, s:0, id:0
04-02 22:37:06.136: I/MEMORY(15827): jMEM M:65536, U:29444, A:36092, C:-8144, loadScene, ADDED IMAGE b:0, s:0, id:1
04-02 22:37:19.806: I/MEMORY(15827): jMEM M:65536, U:29432, A:36104, C:12, clearScene, CLEARED VIEW id:1
04-02 22:37:19.806: I/MEMORY(15827): jMEM M:65536, U:29432, A:36104, C:0, clearScene, CLEARED VIEW id:0
04-02 22:37:19.836: I/MEMORY(15827): jMEM M:65536, U:29432, A:36104, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:37:20.116: I/MEMORY(15827): jMEM M:65536, U:37536, A:28000, C:-8104, loadScene, ADDED IMAGE b:1, s:0, id:0
04-02 22:37:28.456: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:4, clearScene, CLEARED VIEW id:0
04-02 22:37:28.486: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:37:28.756: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:0, loadScene, ADDED IMAGE b:1, s:1, id:0
04-02 22:37:29.226: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:0, loadScene, ADDED IMAGE b:1, s:1, id:1
04-02 22:37:29.706: I/MEMORY(15827): jMEM M:65536, U:45636, A:19900, C:-8104, loadScene, ADDED IMAGE b:1, s:1, id:2
04-02 22:37:30.156: I/MEMORY(15827): jMEM M:65536, U:53740, A:11796, C:-8104, loadScene, ADDED IMAGE b:1, s:1, id:3
04-02 22:37:38.676: I/MEMORY(15827): jMEM M:65536, U:53732, A:11804, C:8, clearScene, CLEARED VIEW id:3
04-02 22:37:38.676: I/MEMORY(15827): jMEM M:65536, U:53732, A:11804, C:0, clearScene, CLEARED VIEW id:2
04-02 22:37:38.676: I/MEMORY(15827): jMEM M:65536, U:53732, A:11804, C:0, clearScene, CLEARED VIEW id:1
04-02 22:37:38.676: I/MEMORY(15827): jMEM M:65536, U:53732, A:11804, C:0, clearScene, CLEARED VIEW id:0
04-02 22:37:38.696: I/MEMORY(15827): jMEM M:65536, U:53732, A:11804, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:37:38.966: I/MEMORY(15827): jMEM M:65536, U:53732, A:11804, C:0, loadScene, ADDED IMAGE b:1, s:2, id:0
04-02 22:37:48.156: I/MEMORY(15827): jMEM M:65536, U:53732, A:11804, C:0, clearScene, CLEARED VIEW id:0
04-02 22:37:48.216: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:16200, clearScene, AFTER TRASH COLLECTOR
04-02 22:37:48.676: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:0, loadScene, ADDED IMAGE b:1, s:3, id:0
04-02 22:37:49.256: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:0, loadScene, ADDED IMAGE b:1, s:3, id:1
04-02 22:37:49.716: I/MEMORY(15827): jMEM M:65536, U:45636, A:19900, C:-8104, loadScene, ADDED IMAGE b:1, s:3, id:2
04-02 22:38:07.426: I/MEMORY(15827): jMEM M:65536, U:45632, A:19904, C:4, clearScene, CLEARED VIEW id:2
04-02 22:38:07.426: I/MEMORY(15827): jMEM M:65536, U:45632, A:19904, C:0, clearScene, CLEARED VIEW id:1
04-02 22:38:07.426: I/MEMORY(15827): jMEM M:65536, U:45632, A:19904, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:07.496: I/MEMORY(15827): jMEM M:65536, U:45632, A:19904, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:07.766: I/MEMORY(15827): jMEM M:65536, U:45632, A:19904, C:0, loadScene, ADDED IMAGE b:1, s:4, id:0
04-02 22:38:08.096: I/MEMORY(15827): jMEM M:65536, U:53736, A:11800, C:-8104, loadScene, ADDED IMAGE b:1, s:4, id:1
04-02 22:38:10.896: I/MEMORY(15827): jMEM M:65536, U:53736, A:11800, C:0, clearScene, CLEARED VIEW id:1
04-02 22:38:10.896: I/MEMORY(15827): jMEM M:65536, U:53736, A:11800, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:10.916: I/MEMORY(15827): jMEM M:65536, U:53736, A:11800, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:11.436: I/MEMORY(15827): jMEM M:65536, U:53736, A:11800, C:0, loadScene, ADDED IMAGE b:1, s:5, id:0
04-02 22:38:19.356: I/MEMORY(15827): jMEM M:65536, U:53732, A:11804, C:4, clearScene, CLEARED VIEW id:0
04-02 22:38:19.386: I/MEMORY(15827): jMEM M:65536, U:45632, A:19904, C:8100, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:19.866: I/MEMORY(15827): jMEM M:65536, U:45632, A:19904, C:0, loadScene, ADDED IMAGE b:1, s:6, id:0
04-02 22:38:21.326: I/MEMORY(15827): jMEM M:65536, U:45632, A:19904, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:21.356: I/MEMORY(15827): jMEM M:65536, U:21300, A:44236, C:24332, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:21.906: I/MEMORY(15827): jMEM M:65536, U:29404, A:36132, C:-8104, loadScene, ADDED IMAGE b:1, s:7, id:0
04-02 22:38:24.376: I/MEMORY(15827): jMEM M:65536, U:29404, A:36132, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:24.406: I/MEMORY(15827): jMEM M:65536, U:29404, A:36132, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:24.916: I/MEMORY(15827): jMEM M:65536, U:29404, A:36132, C:0, loadScene, ADDED IMAGE b:1, s:8, id:0
04-02 22:38:25.496: I/MEMORY(15827): jMEM M:65536, U:37548, A:27988, C:-8144, loadScene, ADDED IMAGE b:1, s:8, id:1
04-02 22:38:25.796: I/MEMORY(15827): jMEM M:65536, U:45652, A:19884, C:-8104, loadScene, ADDED IMAGE b:1, s:8, id:2
04-02 22:38:28.356: I/MEMORY(15827): jMEM M:65536, U:45652, A:19884, C:0, clearScene, CLEARED VIEW id:2
04-02 22:38:28.356: I/MEMORY(15827): jMEM M:65536, U:45652, A:19884, C:0, clearScene, CLEARED VIEW id:1
04-02 22:38:28.356: I/MEMORY(15827): jMEM M:65536, U:45652, A:19884, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:28.376: I/MEMORY(15827): jMEM M:65536, U:45652, A:19884, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:28.846: I/MEMORY(15827): jMEM M:65536, U:45652, A:19884, C:0, loadScene, ADDED IMAGE b:1, s:9, id:0
04-02 22:38:29.926: I/MEMORY(15827): jMEM M:65536, U:45652, A:19884, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:29.956: I/MEMORY(15827): jMEM M:65536, U:29400, A:36136, C:16252, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:30.416: I/MEMORY(15827): jMEM M:65536, U:29400, A:36136, C:0, loadScene, ADDED IMAGE b:1, s:10, id:0
04-02 22:38:31.446: I/MEMORY(15827): jMEM M:65536, U:29400, A:36136, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:31.476: I/MEMORY(15827): jMEM M:65536, U:21300, A:44236, C:8100, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:31.966: I/MEMORY(15827): jMEM M:65536, U:29404, A:36132, C:-8104, loadScene, ADDED IMAGE b:1, s:11, id:0
04-02 22:38:32.226: I/MEMORY(15827): jMEM M:65536, U:37548, A:27988, C:-8144, loadScene, ADDED IMAGE b:1, s:11, id:1
04-02 22:38:32.526: I/MEMORY(15827): jMEM M:65536, U:45652, A:19884, C:-8104, loadScene, ADDED IMAGE b:1, s:11, id:2
04-02 22:38:32.816: I/MEMORY(15827): jMEM M:65536, U:53756, A:11780, C:-8104, loadScene, ADDED IMAGE b:1, s:11, id:3
04-02 22:38:34.396: I/MEMORY(15827): jMEM M:65536, U:53756, A:11780, C:0, clearScene, CLEARED VIEW id:3
04-02 22:38:34.396: I/MEMORY(15827): jMEM M:65536, U:53756, A:11780, C:0, clearScene, CLEARED VIEW id:2
04-02 22:38:34.396: I/MEMORY(15827): jMEM M:65536, U:53756, A:11780, C:0, clearScene, CLEARED VIEW id:1
04-02 22:38:34.396: I/MEMORY(15827): jMEM M:65536, U:53756, A:11780, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:34.426: I/MEMORY(15827): jMEM M:65536, U:53756, A:11780, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:34.886: I/MEMORY(15827): jMEM M:65536, U:53756, A:11780, C:0, loadScene, ADDED IMAGE b:2, s:0, id:0
04-02 22:38:35.776: I/MEMORY(15827): jMEM M:65536, U:53756, A:11780, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:35.816: I/MEMORY(15827): jMEM M:65536, U:21300, A:44236, C:32456, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:36.256: I/MEMORY(15827): jMEM M:65536, U:29404, A:36132, C:-8104, loadScene, ADDED IMAGE b:2, s:1, id:0
04-02 22:38:36.976: I/MEMORY(15827): jMEM M:65536, U:29404, A:36132, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:37.006: I/MEMORY(15827): jMEM M:65536, U:29404, A:36132, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:37.436: I/MEMORY(15827): jMEM M:65536, U:29404, A:36132, C:0, loadScene, ADDED IMAGE b:2, s:2, id:0
04-02 22:38:37.816: I/MEMORY(15827): jMEM M:65536, U:37548, A:27988, C:-8144, loadScene, ADDED IMAGE b:2, s:2, id:1
04-02 22:38:44.986: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:16, clearScene, CLEARED VIEW id:1
04-02 22:38:44.986: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:45.016: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:45.496: I/MEMORY(15827): jMEM M:65536, U:37532, A:28004, C:0, loadScene, ADDED IMAGE b:2, s:3, id:0
04-02 22:38:45.996: I/MEMORY(15827): jMEM M:65536, U:45636, A:19900, C:-8104, loadScene, ADDED IMAGE b:2, s:3, id:1
04-02 22:38:48.306: I/MEMORY(15827): jMEM M:65536, U:45636, A:19900, C:0, clearScene, CLEARED VIEW id:1
04-02 22:38:48.306: I/MEMORY(15827): jMEM M:65536, U:45636, A:19900, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:48.336: I/MEMORY(15827): jMEM M:65536, U:45636, A:19900, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:48.846: I/MEMORY(15827): jMEM M:65536, U:45636, A:19900, C:0, loadScene, ADDED IMAGE b:2, s:4, id:0
04-02 22:38:49.326: I/MEMORY(15827): jMEM M:65536, U:45636, A:19900, C:0, loadScene, ADDED IMAGE b:2, s:4, id:1
04-02 22:38:49.856: I/MEMORY(15827): jMEM M:65536, U:53740, A:11796, C:-8104, loadScene, ADDED IMAGE b:2, s:4, id:2
04-02 22:38:50.386: I/MEMORY(15827): jMEM M:65536, U:61844, A:3692, C:-8104, loadScene, ADDED IMAGE b:2, s:4, id:3
04-02 22:38:59.486: I/MEMORY(15827): jMEM M:65536, U:61832, A:3704, C:12, clearScene, CLEARED VIEW id:3
04-02 22:38:59.486: I/MEMORY(15827): jMEM M:65536, U:61832, A:3704, C:0, clearScene, CLEARED VIEW id:2
04-02 22:38:59.486: I/MEMORY(15827): jMEM M:65536, U:61832, A:3704, C:0, clearScene, CLEARED VIEW id:1
04-02 22:38:59.486: I/MEMORY(15827): jMEM M:65536, U:61832, A:3704, C:0, clearScene, CLEARED VIEW id:0
04-02 22:38:59.516: I/MEMORY(15827): jMEM M:65536, U:61832, A:3704, C:0, clearScene, AFTER TRASH COLLECTOR
04-02 22:38:59.936: I/MEMORY(15827): jMEM M:65536, U:61832, A:3704, C:0, loadScene, ADDED IMAGE b:2, s:5, id:0
04-02 22:39:00.356: I/MEMORY(15827): jMEM M:65536, U:61832, A:3704, C:0, loadScene, ADDED IMAGE b:2, s:5, id:1
I' ve stato attraverso la formazione "Visualizzazione Bitmap effettivamente" a
http://developer.android.com/training/displaying-bitmaps/index.html
sono stato anche attraverso le seguenti domande StackOverflow:
Recycle ImageView's Bitmap
ImageView: automatically recycle bitmap if ImageView is not visible (within ScrollView)
android - out of memory exception when creating bitmap
Bitmap decodeStream OutOfMemory Exception
Detect application heap size in Android
android createBitmap OOM when ((freeMemory > bitmapSize) && (nativeFreeHeap < bitmap size))
android 495KB image taking 10MB of Heap size
Android ImageView setImageBitmap
Android Memory Leak solution
Android custom view Bitmap memory leak
e molti molti altri articoli in tutto il web!
Per chiarire, questo sembra accadere solo nel mio Nexus 7. Non ho riscontrato il problema sul mio emulatore o sul mio Galaxy Nexus. Penso che questo possa essere dovuto al fatto che sto ridimensionando le immagini.
Per favore aiutami a capire dove si trova la perdita di memoria!
*** EDIT (4/2/13) Aiutatemi a identificare il motivo per cui i registri di un emulatore con Android 10 (2.3.3) mostrano il sistema che alloca la memoria e la garbage che si schiarisce esattamente come dovrebbe, e i log del mio Nexus 7 con Android 17 (4.2) mostrano il sistema che alloca la memoria e il garbage collector che cancella la memoria apparentemente a caso?
+1 per la ricerca. Ma questa eccezione viene visualizzata solo sull'emulatore o viene visualizzata anche sui dispositivi? – Nezam
Scusate, aggiornerò la domanda, sto solo riscontrando il problema sul mio Nexus 7. La mia galassia nexus ed emulatore non sembrano avere il problema. Penso che sia perché sto ridimensionando le immagini. – sngreco
Un riferimento debole può essere inefficace su una bitmap perché una bitmap sembra piccola per il gc. (E in generale non si dovrebbe mai 'doAnything (bmp.get())' per il motivo che il WeakReference può essere liberato.) – 18446744073709551615