VectorDrawable를 Bitmap로 변환

public static Bitmap getBitmapFromVectorDrawable(Context context, int drawableId) {
  Drawable drawable = ContextCompat.getDrawable(context, drawableId);
  if (Build.VERSION.SDK_INT < Build.VERSION_CODES.LOLLIPOP) {
    drawable = (DrawableCompat.wrap(drawable)).mutate();
  }

  Bitmap bitmap = Bitmap.createBitmap(drawable.getIntrinsicWidth(),
      drawable.getIntrinsicHeight(), Bitmap.Config.ARGB_8888);
  Canvas canvas = new Canvas(bitmap);
  drawable.setBounds(0, 0, canvas.getWidth(), canvas.getHeight());
  drawable.draw(canvas);

  return bitmap;
}