Permission check관련

마시멜로우 이후에 단순히 manifest에 permission을 등록하는 것만으로는 해결이 안됨

(runtime exception?이었나 에러뜸)

유저들에게 권한 허용여부에 대해 물어봐야 함

직접 구현할 수도 있으나 이미 잘 되어있는 라이브러리들이 있으니...

https://github.com/Karumi/Dexter

현재 내가 쓰고 있는 라이브러리

사용법도 깔끔하고, 클래스를 따로 빼둬서 모든 액티비티나 프래그먼트에서 사용가능하게끔 구현...

(dagger로 inject하는데 좀 더 효율적인 방법이 있을지 이건 고민해봐야 할 듯)

무거운 프로세스의 경우 background에서

// Background permission check (heavy process)
public class BaseBackgroundPermissionListener extends BasePermissionListener {
    Handler handler = new Handler(Looper.getMainLooper());

    public BaseBackgroundPermissionListener(AppCompatActivity activity) {
        super(activity);
    }

    public BaseBackgroundPermissionListener(Fragment fragment) {
        super(fragment);
    }

    @Override
    public void onPermissionGranted(PermissionGrantedResponse response) {
        handler.post(() -> {
            BaseBackgroundPermissionListener.super.onPermissionGranted(response);
        });
    }

    @Override
    public void onPermissionDenied(PermissionDeniedResponse response) {
        handler.post(() -> {
            BaseBackgroundPermissionListener.super.onPermissionDenied(response);
        });
    }

    @Override
    public void onPermissionRationaleShouldBeShown(PermissionRequest permission, PermissionToken token) {
        handler.post(() -> {
            BaseBackgroundPermissionListener.super.onPermissionRationaleShouldBeShown(permission, token);
        });
    }
}

다수의 permission check필요시

// Multiple permission check
public class BaseMultiplePermissionListener implements MultiplePermissionsListener {

    AppCompatActivity activity;
    Fragment fragment;

    public BaseMultiplePermissionListener(AppCompatActivity activity) {
        this.activity = activity;
    }

    public BaseMultiplePermissionListener(Fragment fragment) {
        this.fragment = fragment;
    }

    @Override
    public void onPermissionsChecked(MultiplePermissionsReport report) {
        report.areAllPermissionsGranted();
    }

    @Override
    public void onPermissionRationaleShouldBeShown(List<PermissionRequest> permissions, PermissionToken token) {
        token.continuePermissionRequest();
    }
}

한 개의 permission check

// Single permission check
public class BasePermissionListener implements PermissionListener {

    @Inject
    protected StartPresenter presenter;

    AppCompatActivity activity;
    Fragment fragment;

    public BasePermissionListener(AppCompatActivity activity) {
        this.activity = activity;
    }

    public BasePermissionListener(Fragment fragment) {
        this.fragment = fragment;
    }

    @Override
    public void onPermissionGranted(PermissionGrantedResponse response) {
        Logger.d(response.getPermissionName());
        response.getPermissionName();
    }

    @Override
    public void onPermissionDenied(PermissionDeniedResponse response) {
        if (response.isPermanentlyDenied()){
            presenter.showPermissionGuide(activity.getString(R.string.permission_permanently_denied));
        } else {
            Logger.d(response.getPermissionName());
            presenter.showPermissionGuide(response.getPermissionName());
        }
    }

    @Override
    public void onPermissionRationaleShouldBeShown(PermissionRequest permission, PermissionToken token) {
        Logger.d("");
        token.continuePermissionRequest();
    }
}