How to grant permissions for the Camera in Fragment

Question

Hello I had simple application where I am using the camera, so the user must grant permission for the camera.

So far my app had only Activity, but now I want to use Fragments. I got to fragments one is called FragmentScanCode (here I wanna use the camera ).

This is also the first fragment so I want to grant permission at the start of app.

There is my code from MainActivity, it works fine.

final int RequestCameraPermissionID = 1001;

onRequestPermissionsResult:

    @Override
    public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
        switch (requestCode) {
            case RequestCameraPermissionID: {
                if (grantResults[0] == PackageManager.PERMISSION_GRANTED) {
                    if (ActivityCompat.checkSelfPermission(this, Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {
                        ActivityCompat.requestPermissions(MainActivity.this,
                                new String[]{Manifest.permission.CAMERA},
                                RequestCameraPermissionID);

                        //return;
                    }
                    try {
                        cameraSource.start(cameraView.getHolder());
                    } catch (IOException e) {
                        e.printStackTrace();
                    }

                }
            }
            break;
        }
    }

I can't use this in my Fragment because ActivityCompat.

Is any possible solution to grant permission on fragment?

This is what I tried based on developer.google.com doc and it works

This is working code for me.

@Override
    public void onRequestPermissionsResult(int requestCode, String[] permissions,
                                           int[] grantResults) {
        switch (requestCode){
            case RequestCameraPermissionID: {
                if(grantResults[0] == PackageManager.PERMISSION_GRANTED){
                    if(getActivity().checkSelfPermission(Manifest.permission.CAMERA) !=
                    PackageManager.PERMISSION_GRANTED) {
                        requestPermissions(
                                new String[]{Manifest.permission.CAMERA},
                                RequestCameraPermissionID);
                        //cameraSource.start(cameraView.getHolder());
                        return;
                    }
                }
                captureCode();
            }
            break;
        }
    }

and also in my function captureCode()

try {
                        if (getActivity().checkSelfPermission(Manifest.permission.CAMERA) != PackageManager.PERMISSION_GRANTED) {

                            requestPermissions(
                                    new String[]{Manifest.permission.CAMERA},
                                    RequestCameraPermissionID);
                            return;
                        }
                        cameraSource.start(cameraView.getHolder());

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

might it will help you . https://developer.android.com/reference/android/support/v4/app/Fragment.html#requestPermissions(java.lang.String[],%20int) — Ashish, Jul 06 '19 at 13:22
Possible duplicate of [Request runtime permissions from v4.Fragment and have callback go to Fragment?](https://stackoverflow.com/questions/32890702/request-runtime-permissions-from-v4-fragment-and-have-callback-go-to-fragment) — Qaiser Hussain, Jul 06 '19 at 13:26
Call `requestPermissions()` on the fragment and override `onRequestPermissionsResult()` in the same fragment. — CommonsWare, Jul 06 '19 at 13:28
@Ashish i tried do it with doc ( edited my question ) but still doesn't work. — Mark Zacharski, Jul 06 '19 at 13:55
I can't answer that. You need to call it before you need the permission. So, for example, if this fragment is showing a camera preview, probably you should request permissions before you even try showing this fragment. — CommonsWare, Jul 06 '19 at 13:58
@Ashish it works fine I did it based on documentation. Thank you — Mark Zacharski, Jul 06 '19 at 14:24

score 0 · Answer 1 · answered Jul 06 '19 at 13:29

This behavior seems to be present in the v4 Fragment support class requestPermissions in Fragment. The Activity/FragmentCompat implementations exist for people who wish to use the native classes with the extended functionality on API levels between 11 and 23. check this out

How to grant permissions for the Camera in Fragment

1 Answers1