BitmapUtils.java 文件源码

public static Bitmap drawableToBitamp(Drawable drawable) {
    if (drawable instanceof BitmapDrawable) {
        BitmapDrawable bitmapDrawable = ((BitmapDrawable) drawable);
        return bitmapDrawable.getBitmap();
    } else {
        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;
    }
}