BitmapUtils.java 文件源码

public static Bitmap drawableToBitmap(Drawable drawable) {

        Bitmap bitmap = Bitmap
                        .createBitmap(
                            drawable.getIntrinsicWidth(),
                            drawable.getIntrinsicHeight(),
                            drawable.getOpacity() != PixelFormat.OPAQUE ? Config.ARGB_8888
                            : Config.RGB_565);
        Canvas canvas = new Canvas(bitmap);

        drawable.setBounds(0, 0, drawable.getIntrinsicWidth(),
                           drawable.getIntrinsicHeight());
        drawable.draw(canvas);

        return bitmap;

    }