相机意图中返回的 Uri 为空

Question

我正在尝试创建 Android 应用程序来拍摄照片或将照片上传到服务器。我的主要 objective 是获取意图中返回的照片的 URI。我已按照 [1] 中的步骤进行操作。问题是，在带有 Lollipop 的 phone 版本 5.1.1 上它工作正常并且意图 returns 照片的 URI，但是在带有 Jelly Bean 的 phone 版本 4.2 上.1,intent中返回的URI为null.

这是我的代码

创建视图并为按钮设置侦听器

static final int REQUEST_TAKE_PHOTO = 1;
static final int REQUEST_GET_PHOTO = 2;   

@Nullable
@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
    View view = inflater.inflate(R.layout.fragment_home_page, container, false);

    camera = (FloatingActionButton) view.findViewById(R.id.take_photo);
    upload = (FloatingActionButton) view.findViewById(R.id.upload_photo);
    photo = (ImageView) view.findViewById(R.id.photo);

    camera.setOnClickListener(takePhoto);
    upload.setOnClickListener(uploadPhoto);

    return view;
}

拍照动作

   View.OnClickListener takePhoto = new View.OnClickListener() {
        @Override
        public void onClick(View view) {
            Intent takePictureIntent = new Intent(MediaStore.ACTION_IMAGE_CAPTURE);
            if (takePictureIntent.resolveActivity(getActivity().getPackageManager()) != null) {
                startActivityForResult(takePictureIntent, REQUEST_TAKE_PHOTO);
            }
        }
    };

从图库监听器上传

View.OnClickListener uploadPhoto = new View.OnClickListener() {
    @Override
    public void onClick(View view) {
        Intent photoPickerIntent = new Intent(Intent.ACTION_PICK);
        if (photoPickerIntent.resolveActivity(getActivity().getPackageManager()) != null) {
            photoPickerIntent.setType("image/*");
            startActivityForResult(photoPickerIntent, REQUEST_GET_PHOTO);
        }
    }
};

处理意图结果

@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {

    if (resultCode == Activity.RESULT_OK && (requestCode == REQUEST_TAKE_PHOTO || requestCode == REQUEST_GET_PHOTO)) {

        Uri imageUri = data.getData();

        try {
            Bitmap bitmap = MediaStore.Images.Media.getBitmap(getActivity().getApplicationContext().getContentResolver(), imageUri);
            String filePath = getPath(imageUri);
            bitmap = BitmapRotator.rotateBitmap(bitmap, filePath);

            photo.setImageBitmap(bitmap);
            UploadPhotoController.uploadPhoto(filePath);

        } catch (IOException e) {
            e.printStackTrace();
        } catch (PhotoNotFoundException e) {
            e.printStackTrace();
        } catch (NullPointerException e) {
            e.printStackTrace();
        }
    }
}

data.getData() 为空，因此我无法获取 uri 或图像的文件路径。

谢谢。

[1] http://developer.android.com/training/camera/photobasics.html

Answer 1

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