我的应用程序捕获并将图像保存在公共目录中。我可以在FileManager中看到它，但是当我尝试从应用程序中打开它时却没有显示

Question

以下是MainActivity.java的代码

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    takePictureButton = findViewById(R.id.button_image);
    imageView = findViewById(R.id.imageView);

这是拍照的ocClick（）函数。这会调用相机并捕获图像。

public void takePicture(View view) {
    Intent intent = new Intent(android.provider.MediaStore.ACTION_IMAGE_CAPTURE);

    File pictureDirectory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
    String pictureName = getPictureName();
    File imageFile = new File(pictureDirectory, pictureName);
    Uri pictureUri = Uri.fromFile(imageFile);
    intent.putExtra(android.provider.MediaStore.EXTRA_OUTPUT, pictureUri);

    startActivityForResult(intent, CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE);
}

private String getPictureName() {
    SimpleDateFormat sdf = new SimpleDateFormat("yyyyMMdd_HHmmss");
    String timestamp = sdf.format(new Date());
    return "IMG_" + timestamp + ".jpg";
}

这是用于打开Gallery的onClick（）函数。可以访问画廊，但是我保存照片的目录未显示

public void openGallery (View view)
{
    Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
    File pictureDirectory = Environment.getExternalStoragePublicDirectory(Environment.DIRECTORY_PICTURES);
    String pictureDirectoryPath = pictureDirectory.getPath();
    Uri data = Uri.parse(pictureDirectoryPath);

    photoPickerIntent.setDataAndType(data, "image/*");
    startActivityForResult(photoPickerIntent, IMAGE_GALLERY_REQUEST_CODE);
}

这是onActivityResult（）方法。

protected void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == CAPTURE_IMAGE_ACTIVITY_REQUEST_CODE) {
        if (requestCode == RESULT_OK) {

        }
    }


    if (requestCode == IMAGE_GALLERY_REQUEST_CODE) {
        if (resultCode == RESULT_OK) {
                Uri imageUri = data.getData();

                // declare a stream to read data from sdCard
                InputStream inputStream;
                try {
                    inputStream  = getContentResolver().openInputStream(imageUri);

                    Bitmap image = BitmapFactory.decodeStream(inputStream);

                    imageView.setImageBitmap(image);

                } catch (FileNotFoundException e) {
                    e.printStackTrace();
                    Toast.makeText(this, "unable to open image", Toast.LENGTH_LONG).show();
                }
        }
    }

}

谁能告诉我我哪里出错了。我没有为此解决方案。谁能帮我。预先感谢。