Question

我正在尝试创建和Android应用程序拍摄照片或将照片上传到服务器。我的主要目标是获取意图中返回的照片的URI。我按照[1]中的步骤进行操作。问题是在带有Lollipop的手机上，版本5.1.1工作正常并且意图返回照片的URI，但是在具有Jelly Bean版本4.2.1的手机上，意图中返回的URI为空。

这是我的代码

创建视图并将听众设置为按钮

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;
}

拍照行动

   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);
            }
        }
    };

从图库收听者上传

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null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

在StackOverflow上，您可以根据自己的情况找到这些主题：

My Android camera Uri is returning a null value, but the Samsung fix is in place, help?

Camera activity returning null android

Android Camera : data intent returns null

Uri在相机中返回意图为空

1 个答案: