Here you can find the source of drawable2Bitmap(Drawable drawable)
public static Bitmap drawable2Bitmap(Drawable drawable)
//package com.java2s; import android.graphics.Bitmap; import android.graphics.Canvas; import android.graphics.PixelFormat; import android.graphics.drawable.Drawable; public class Main { public static Bitmap drawable2Bitmap(Drawable drawable) { int width = drawable.getIntrinsicWidth(); int height = drawable.getIntrinsicHeight(); Bitmap bitmap = Bitmap/* w w w . j ava2s. c o m*/ .createBitmap( width, height, drawable.getOpacity() != PixelFormat.OPAQUE ? Bitmap.Config.ARGB_8888 : Bitmap.Config.RGB_565); Canvas canvas = new Canvas(bitmap); drawable.setBounds(0, 0, width, height); drawable.draw(canvas); return bitmap; } }