Question

我正在尝试编写一个图像选择器，它将从图库中选择一个图像并将其设置为ImageView的来源。我使用下面给出的代码执行此操作，但在我在图库中选择图像并且应用程序返回Fragment后，我收到错误：

I/PICTURE: Path: /storage/emulated/0/DCIM/Camera/IMG_20160409_130537213.jpg
E/BitmapFactory: Unable to decode stream: java.io.FileNotFoundException: /storage/emulated/0/DCIM/Camera/IMG_20160409_130537213.jpg: open failed: EACCES (Permission denied)
I/System.out: resolveUri failed on bad bitmap uri: /storage/emulated/0/DCIM/Camera/IMG_20160409_130537213.jpg

以下是代码：

Fragment.java

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container,
                         Bundle savedInstanceState) {
    // Inflate the layout for this fragment
    View v =  inflater.inflate(R.layout.fragment_account, container, false);
    ........
    ........

    profile_img.setOnClickListener(new View.OnClickListener() {
            @Override
            public void onClick(View v) {
                 Intent i = new Intent(Intent.ACTION_PICK,
                    android.provider.MediaStore.Images.Media.EXTERNAL_CONTENT_URI);

            startActivityForResult(i, SELECT_PICTURE);
            //SELECT_PICTURE = 1; defined in the fragment class
        }
    });

//The onActivityResult method
@Override
public void onActivityResult(int requestCode, int resultCode, Intent data) {
    if (requestCode == SELECT_PICTURE
            && resultCode == Activity.RESULT_OK) {
        String path = getPathFromCameraData(data, this.getActivity());
        Log.i("PICTURE", "Path: " + path);
        if (path != null) {
            profile_img.setImageURI(Uri.parse(path));
        }
    }
}

//The string used to get the file(image) location
public static String getPathFromCameraData(Intent data, Context context) {
    Uri selectedImage = data.getData();
    String[] filePathColumn = { MediaStore.Images.Media.DATA };
    Cursor cursor = context.getContentResolver().query(selectedImage,
            filePathColumn, null, null, null);
    cursor.moveToFirst();
    int columnIndex = cursor.getColumnIndex(filePathColumn[0]);
    String picturePath = cursor.getString(columnIndex);
    cursor.close();
    return picturePath;
}

在清单中，我已正确声明该应用需要访问设备存储空间

<manifest>

    <uses-permission android:name="android.permission.WRITE_EXTERNAL_STORAGE" />

    <application>
        ....
    </application>
</manifest>

可能是什么问题？任何帮助表示赞赏。谢谢！

Answer 1

取消getPathFromCameraData()并更改

profile_img.setImageURI(Uri.parse(path));

到

profile_img.setImageURI(data.getData());

Answer 2

如果您要从图库中选择图片，则需要此权限

<uses-permission android:name="android.permission.READ_EXTERNAL_STORAGE" />

从图库中选择图像 - EACCESS权限被拒绝

2 个答案: