Request runtime permissions from v4.Fragment and have callback go to Fragment?

Question

I'm having a weird issue that is causing a conflict. I had to switch to native Fragments to fix it, but there are bugs with that.

My original problem: I have a navigation drawer setup with v4 Fragments. To ask for permission in one of my Fragments I call ActivityCompat.requestPermissions(getActivity(), Manifest.permission.ACCESS_FINE_LOCATION, 1); The prompt shows up just fine, but when I accept or deny the permission, nothing happens. The callback onRequestPermissionsResult() is never called. Instead it gets called in the Activity that my Fragments are attached to. Useless to me, I need the callback to work in the Fragment.

With this in mind I was told that I need to use FragmentCompat, but that only works with native Fragments (v13+), so I changed navigation drawer to work from native Fragments instead of the v4 support library Fragments. However, because I'm using AppCompatActivity, certain things do not work, like addToBackStack() and going back to a previous fragment.

Long story short, does anyone know how I can use the v4.Fragment and still call for permission in the Fragment and get the callback to be in the Fragment? I feel like this is a bug in Android that hasn't been addressed but I'm not 100%.

Let me know if you need to see my code, it's just the standard methods that you need for runtime permissions, I would like to work with v4 Fragments though which doesn't work from my understanding.

Solution 1

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.

Solution 2

Adding this to the parent activity works for me:

@Override
public void onRequestPermissionsResult(int requestCode, @NonNull String[] permissions, @NonNull int[] grantResults) {
    super.onRequestPermissionsResult(requestCode, permissions, grantResults);
    List<Fragment> fragments = getSupportFragmentManager().getFragments();
    if (fragments != null) {
        for (Fragment fragment : fragments) {
            fragment.onRequestPermissionsResult(requestCode, permissions, grantResults);
        }
    }
}

Source: https://code.google.com/p/android/issues/detail?id=189121#c5

Solution 3

If you need to get the permissionResult in fragment v4 make sure you use

Fragment.requestPermission(String[], int);

instead of

AppCompat.requestPermission(Activity, String[], int)

Check out this answer!

Solution 4

You can use this part of code

requestPermissions(new String[]{Manifest.permission.GET_ACCOUNTS}, PERMISSION_REQUEST_CODE);

Solution 5

I faced the same situation recently, when I needed to check for a permission inside the support fragment and get a callback there.

I was able to use ContextCompat to checkSelfPermission and then as @NasaGeek said called android.support.v4.app.Fragment's requestPermissions to request the permission and then got a call back to onRequestPermissionsResult in v4 Fragment.

Hope this helps.

Thanks.

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