When loading bitmap with "BitmapFactory.decodeResource" app crashes

Question

I'm developing a game for little children, which contains different educative exercises. In one of them I need a picture background, so I'm loading it and scale it with Matrix to fill screen. But sometimes loading picture causes crash.

public DrawThread(SurfaceHolder surfaceHolder, Resources resources, float screen_x_max, float screen_y_max){
    this.surfaceHolder = surfaceHolder;
    screenWidth=screen_x_max;
    screenHeight=screen_y_max;
    // picture for bg
    picture = BitmapFactory.decodeResource(resources, R.drawable.background);
    ...
}

At the end of this thread I recycle it and null.

if (this.picture!=null)
    {
        this.picture.recycle();
        this.picture=null;
    }

But app still crases. There is error log:

java.lang.OutOfMemoryError: bitmap size exceeds VM budget
at android.graphics.BitmapFactory.nativeDecodeAsset(Native Method)
at android.graphics.BitmapFactory.decodeStream(BitmapFactory.java:494)
at android.graphics.BitmapFactory.decodeResourceStream(BitmapFactory.java:370)
at android.graphics.BitmapFactory.decodeResource(BitmapFactory.java:393)
at android.graphics.BitmapFactory.decodeResource(BitmapFactory.java:419)
at lexu.me.childstudy_lite.DrawThreadFindAnimals2.<init>(findAnimals2.java:271)
at lexu.me.childstudy_lite.findanimals2_view.surfaceCreated(findAnimals2.java:186)
at android.view.SurfaceView.updateWindow(SurfaceView.java:548)
at android.view.SurfaceView.dispatchDraw(SurfaceView.java:353)
at android.view.ViewGroup.drawChild(ViewGroup.java:1737)
at android.view.ViewGroup.dispatchDraw(ViewGroup.java:1466)
at android.view.ViewGroup.drawChild(ViewGroup.java:1737)

Thanks.

You're trying to load a very large bitmap and downscale it with a matrix? The very large bitmap will use a very large amount of memory when decoded. Start with appropriately scaled bitmaps, using the various drawable folders (e.g. drawable-hdpi) to load images with a proper initial scale. — CSmith, Aug 20 '12 at 13:32

score 0 · Answer 1 · edited May 23 '17 at 12:04

0

This is a classic problem on Android. This should provide you with plenty of tips and approaches :

Lazy load of images in ListView

edited May 23 '17 at 12:04

Community

1
1

answered Aug 20 '12 at 13:25

Slickelito

1,786
20
28

score 0 · Answer 2 · edited May 23 '17 at 11:48

0

By down sampling bitmap, you can avoid OME. Have a look at following link. Hope it helps.

Android:Issue Image resolution

Edit: In that link, its taking images from Asset folder. You can modify it according to your need.

edited May 23 '17 at 11:48

Community

1
1

answered Aug 20 '12 at 13:55

Braj

2,164
2
26
44

score 0 · Answer 3 · edited May 23 '17 at 12:27

0

You are getting an Out Of Memory Exception. To avoid this, have a look at this link: android how to handle out of memory exception

There is a ton of information on the web that will help you with this problem.

I hope this helps.

edited May 23 '17 at 12:27

Community

1
1

answered Aug 20 '12 at 14:09

Luke Taylor

9,481
13
41
73

When loading bitmap with "BitmapFactory.decodeResource" app crashes

3 Answers3