[android] drawable을 bitmap으로 변환하기

그냥 casting하면 된다.

Bitmap bitmap = ((BitmapDrawable)d).getBitmap();

refs:

http://stackoverflow.com/questions/3035692/how-to-convert-a-drawable-to-a-bitmap

http://sdw8001.tistory.com/21 -> bitmap, canvas, drawable 개념

happy hacking'