I am working on an application where i have images being downloaded asynchronously for SlideShows. One SlideShow contains 10 slides, hence 10 images are downloaded when slideshow is opened. After i scroll through 10-15 slideshows approximately i start getting memory warning and following Exception in the trace and app crashes.
Here is the trace:
12-23 12:23:53.124: ERROR/dalvikvm-heap(3067): 45850-byte external allocation too large for this process.
12-23 12:23:53.134: ERROR/dalvikvm(3067): Out of memory: Heap Size=13127KB, Allocated=11913KB, Bitmap Size=11407KB
12-23 12:23:53.134: ERROR/GraphicsJNI(3067): VM won't let us allocate 45850 bytes
12-23 12:23:53.134: DEBUG/skia(3067): --- decoder->decode returned false
12-23 12:23:53.134: WARN/dalvikvm(3067): threadid=46: thread exiting with uncaught exception (group=0x400259f8)
12-23 12:23:53.134: ERROR/AndroidRuntime(3067): FATAL EXCEPTION: Thread-1016
12-23 12:23:53.134: ERROR/AndroidRuntime(3067): java.lang.OutOfMemoryError: bitmap size exceeds VM budget
12-23 12:23:53.134: ERROR/AndroidRuntime(3067): at android.graphics.BitmapFactory.nativeDecodeStream(Native Method)
12-23 12:23:53.134: ERROR/AndroidRuntime(3067): at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:468)
12-23 12:23:53.134: ERROR/AndroidRuntime(3067): at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:332)
12-23 12:23:53.134: ERROR/AndroidRuntime(3067): at android.graphics.drawable.Drawable.createFromResourceStream(Drawable.java:697)
12-23 12:23:53.134: ERROR/AndroidRuntime(3067): at android.graphics.drawable.Drawable.createFromStream(Drawable.java:657)
12-23 12:23:53.134: ERROR/AndroidRuntime(3067): at com.nbcu.myApp.appsupport.AsyncImageLoader.loadImageFromUrl(AsyncImageLoader.java:98)
12-23 12:23:53.134: ERROR/AndroidRuntime(3067): at com.nbcu.myApp.appsupport.AsyncImageLoader$2.run(AsyncImageLoader.java:70)
12-23 12:23:53.154: WARN/ActivityManager(96): Force finishing activity com.nbcu.myApp.activities/com.nbcu.myApp.controllers.StoriesListController
12-23 12:23:53.224: ERROR/dalvikvm-heap(3067): 45850-byte external allocation too large for this process.
12-23 12:23:53.234: DEBUG/SurfaceFlinger(96): Layer::setBuffers(this=0x2fabc0), pid=96, w=1, h=1
12-23 12:23:53.234: ERROR/dalvikvm(3067): Out of memory: Heap Size=13127KB, Allocated=11948KB, Bitmap Size=11407KB
12-23 12:23:53.234: ERROR/GraphicsJNI(3067): VM won't let us allocate 45850 bytes
12-23 12:23:53.234: ERROR/Error(3067): Message = java.lang.OutOfMemoryError: bitmap size exceeds VM budget
The code where images are being downloaded is:
public void run() {
Looper.prepare();
for (int i = 0; i < slides.size(); i++) {
try {
final SlideShowItem story = slides.get(i);
if (story.getImage() == null) {
Drawable cachedImage = Utils.database.getRSSImage(Constants.StoriesTable, story.getItemId());
if (cachedImage != null) {
story.setImage(cachedImage);
} else {
cachedImage = asyncImageLoader.loadDrawable(story.getImagePath(), new ImageCallback() {
public void imageLoaded(Drawable imageDrawable, String imageUrl) {
story.setImage(imageDrawable);
Utils.database.storeRSSItemImage(Constants.StoriesTable, imageDrawable, story.getItemId());
}
});
}
}
Thread.sleep(500);
} catch (Exception e) {
e.printStackTrace();
}
}
Looper.loop();
}
Code for loadDrawable() is:
public Drawable loadDrawable(final String imageUrl, final ImageCallback imageCallback) {
final Handler handler = new Handler() {
public void handleMessage(Message message) {
imageCallback.imageLoaded((Drawable) message.obj, imageUrl);
}
};
new Thread() {
public void run() {
Drawable drawable = loadImageFromUrl(imageUrl);
// System.out.println("image url: " + imageUrl);
if (drawable != null)
{
Message message = handler.obtainMessage(0, drawable);
handler.sendMessage(message);
}
}
}.start();
return null;
}
and the code for loadImageFromURL() is:
public static Drawable loadImageFromUrl(String url) {
Drawable image = null;
try {
InputStream in = (java.io.InputStream) new java.net.URL(url).getContent();
if (in != null) {
image = Drawable.createFromStream(in, "image");
}
in.close();
} catch (Exception ex) {
// ex.printStackTrace();
Log.v("Exception ", "Asyn Image.In LoadImageFromURL Message: " + ex.toString());
}
return image;
}
Once images are downloaded they are cached. I am unable to find a workaround to avoid this exception. what could be the reason? I have also tried setting image views null when activity is destroyed but it has done nothing for me? Any help is appreciated. Thanks in advance.
Android is a Mobile OS. It has a limited memory, so, you cannot cache all the slides.size(). I assume the size > 15. For example, im running a FastCV algorithm with a HD image as markers, 250000 x 180000 pixels and if i run the program on pc, work fine, if i do it on the mobile phone dont, because the memory is not enough.
I think you can solve the problem, if only caché 10 – 15 images, depends the size of them. If scroll, then cache new one in the memory already used.