如何将图片从imageview发送到gmail？

// 获取ImageView中的图片
Drawable drawable = imageView.getDrawable();

// 将图片转换为Bitmap
Bitmap bitmap = ((BitmapDrawable) drawable).getBitmap();

// 保存Bitmap到本地文件
File file = new File(getExternalCacheDir(), "image.jpg");
try {
    FileOutputStream fos = new FileOutputStream(file);
    bitmap.compress(Bitmap.CompressFormat.JPEG, 100, fos);
    fos.flush();
    fos.close();
} catch (IOException e) {
    e.printStackTrace();
}

// 创建Gmail意图
Intent intent = new Intent(Intent.ACTION_SEND);
intent.setType("message/rfc822");
intent.putExtra(Intent.EXTRA_EMAIL, new String[]{"recipient@gmail.com"});
intent.putExtra(Intent.EXTRA_SUBJECT, "Image from ImageView");
intent.putExtra(Intent.EXTRA_TEXT, "Please find the attached image.");

// 添加附件
Uri uri = Uri.fromFile(file);
intent.putExtra(Intent.EXTRA_STREAM, uri);

// 启动Gmail应用
startActivity(Intent.createChooser(intent, "Send Email"));