我正在与androidstudio合作开发一个应用程序，一旦拍摄了一张照片，它将返回图像中检测到的文本。我的问题是，每次我拍一张照片，它都找不到图像中的任何文字（不管文字有多明显）。我关注了google网站上的mlkit文档，没有发现我的代码有任何问题。每次我拍一张照片，我的任务都不成功，“文本检测失败”会打印到结果中。对我做错的事或我遗漏的事有什么帮助吗？

@Override
protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
    super.onActivityResult(requestCode, resultCode, data);

    // extract image
    assert data != null;
    Bundle image_bundle = data.getExtras();
    Bitmap image_bitmap = (Bitmap) image_bundle.get("data");

    // set image in image_view of application
    image_view.setImageBitmap(image_bitmap);

    // process the given image to get the text
    // this is using Firebase ML and Cloud Vision API

    // 1. create InputImage obj from Bitmap obj
    InputImage input_image = InputImage.fromBitmap(image_bitmap, 0);
    // 2. create TextRecognizer obj as entry point to analyzing image
    TextRecognizer text_recognizer = TextRecognition.getClient();
    // 3. perform text recognition on the image
    Task<Text> task = text_recognizer.process(input_image);
    // 4. handle the success of the task
    task.addOnCompleteListener(new OnCompleteListener<Text>() {
        @Override
        public void onComplete(@NonNull Task<Text> task_) {
            if (task_.isSuccessful()) {
                text_view.setText("Text Detected");
            }
            else {
                text_view.setText("Text Detection Failed");
            }
        }
    });

    text_recognizer.close();
}

}