Android:无法从View投射到图库

// 将View对象转换为Bitmap对象
Bitmap bitmap = Bitmap.createBitmap(view.getWidth(), view.getHeight(), Bitmap.Config.ARGB_8888);

// 创建Canvas对象，并将View内容绘制到Bitmap上
Canvas canvas = new Canvas(bitmap);
view.draw(canvas);

// 保存Bitmap对象到本地存储
File file = new File(Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES), "my_image.jpg");
try {
    FileOutputStream fos = new FileOutputStream(file);
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
    fos.flush();
    fos.close();
} catch (IOException e) {
    e.printStackTrace();
}

// 将保存的图片文件添加到图库
MediaScannerConnection.scanFile(context, new String[]{file.getAbsolutePath()}, null, null);