Android bitmapfactory must be used with caution, which may cause OOM

Bitmapfactory must be used with caution, which may cause OOM

Bitmap bitmap = bitmapfactory. decoderesource (getresources (), R. drawable. xx );

I use bitmapfactory to convert drawable into bitmap, causing OOM to be loaded multiple times, so use it with caution.

The image resources after bitmapfactory. decoderesource are strongly referenced, and GC collection is useless. When GC is happy, weak references are recycled. GC does not like strong references, so more and more memory does not occupy the OOM.

So we don't need bitmapfactory. How can we convert drawable to bitmap? The answer is (bitmapdrawable) Context. getresources (). getdrawable (R. drawable. pic_temp_photo). getbitmap ()