Wsrtjtyk

I have a code using the Location API, and I set the required permission checks (Or so I thought), but when I launch my app, it starts with "Location" permission disabled by default and I have to go to Settings and manually set location permission for my app instead of having prompted upon first launching the app.

The code looks like:

public class MainActivity extends AppCompatActivity {

    private FusedLocationProviderClient mFusedLocationClient;

    @Override

    protected void onCreate(Bundle savedInstanceState) {

        super.onCreate(savedInstanceState);



        setContentView(R.layout.activity_main);



        mFusedLocationClient = LocationServices.getFusedLocationProviderClient(this);





        if (ContextCompat.checkSelfPermission(this, Manifest.permission.ACCESS_FINE_LOCATION)

                != PackageManager.PERMISSION_GRANTED) {

            tv.setText("Not granted");

        } else {

            mFusedLocationClient.getLastLocation()

                    .addOnSuccessListener(this, new OnSuccessListener<Location>() {

                        @Override

                        public void onSuccess(Location location) {

                            // Got last known location. In some rare situations this can be null.

                            if (location != null) {

                                // Logic to handle location object

                                TextView tv = (TextView) findViewById(R.id.tv);      

                                tv.setText("Granted");



                            }

                        }

                    });



        }

    }

}

For asking permission I will suggest you use permission-dispatcher library.

https://github.com/permissions-dispatcher/PermissionsDispatcher

And to enable GPS:

fun locationSetup() {

        LocationServices.getSettingsClient(application)

                .checkLocationSettings(

                        LocationSettingsRequest.Builder()

                                .addLocationRequest(locationRequest)

                                .setAlwaysShow(true)

                                .build())

                .addOnSuccessListener { /*Start location service*/ }

                .addOnFailureListener {

                    if (it.error is ResolvableApiException) {

                        try {

                            it.error.startResolutionForResult(this@MainActivity, REQUEST_CHECK_SETTINGS)

                        } catch (sendEx: IntentSender.SendIntentException) {}

                    }

                }

    }

You are not calling requestPermissions() anywhere. Instead, you are calling tv.setText("Not granted");. If you want to request permissions, call requestPermissions(). See the documentation.