Android bitmap imageview memory leak

Question

I put 4x4 imageView to an activity(BoardActivity), and user can change the images by clicking them. With HTC Desire (Android 2.2.2), I got OOM(Out Of Memory) in about 30 min

Answer 1

To reduce memory, you can try out these things :

• After converting drawables into bitmaps, you can set the imageResourceMap to null. This will unload the 3 drawables.
• Avoid storing a reference to the imageViews. You might be storing imageViews even after they are removed from the UI
• Recycle the bitmaps more often. Instead of just onDestroy, as soon as you know that one bitmap is not used, you can recycle it.

Edit : based on the conversation in the comments : The bitmap returned by BitmapFactory.decodeStream(fis, null, o) is not assigned to any variable and hence is not recycled. Android 2.2 and 2.3 will have leaks in this line.