Android Get Bitmap From ImageView

public Uri getLocalBitmapUri(ImageView imageView) {
        Drawable drawable = imageView.getDrawable();
        Bitmap bmp = null;
        if (drawable instanceof BitmapDrawable){
            bmp = ((BitmapDrawable) imageView.getDrawable()).getBitmap();
        } else {
            return null;
        }
        Uri bmpUri = null;
        try {
            File file =  new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_DOWNLOADS), "share_image_.png");
            file.getParentFile().mkdirs();
            FileOutputStream out = new FileOutputStream(file);
            bmp.compress(Bitmap.CompressFormat.PNG, 90, out);
            out.close();
            bmpUri = Uri.fromFile(file);
        } catch (IOException e) {
            e.printStackTrace();
        }
        return bmpUri;
    }