Recycling bitmaps

android, bitmap, memory-management, out-of-memory

Solution

You should only recycle a bitmap when you do not need it anymore. However, you do need a bitmap when you want to display it. If you don't want to display it, then you can recycle a bitmap.

Problem

I am working on project which involves operations on bitmaps. Because I don't want to have OutofMemoryError I'm trying to recycle each of unused bitmap. Unfortunatelly I've recycled too much and have 'trying to use a recycled bitmap' error. I am using: ``` Bitmap.createBitmap(bmp, x,y,w,h, matrix, false); Bitmap.createScaledBitmap(bmp, w, h,true); ``` Should I recycle bmp after this methods or it is recycled by them? Like: ``` Bitmap newBitmap = Bitmap.createBitmap(bmp, x,y,w,h, matrix, false); bmp.recycle(); ``` Can I just after imageView.setImageBitmap() recycle one which previously was used here? E.g. ``` myImageView.setImageBitmap(myBitmap); myImageView.setImageBitmap(newBitmap); myBitmap.recycle(); ``` Thank you for help.

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