Android中Drawable和Bitmap 之间转换

/**
* Drawable转化为Bitmap
*/
public static Bitmap drawableToBitmap(Drawable drawable) {
int width = drawable.getIntrinsicWidth();
int height = drawable.getIntrinsicHeight();
Bitmap bitmap = Bitmap.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;

}
/**
* Bitmap to Drawable
* @param bitmap
* @param mcontext
* @return
*/
public static Drawable bitmapToDrawble(Bitmap bitmap,Context mcontext){
Drawable drawable = new BitmapDrawable(mcontext.getResources(), bitmap);
return drawable;
}