didChangeAuthorizationStatus is run when authorization is not changed

Question

I have created a button. When the button is clicked I want to get my location. I have to ask user for permission before I will use location manager. Please look at my code:

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
    if (status == kCLAuthorizationStatusAuthorizedAlways || status == kCLAuthorizationStatusAuthorizedWhenInUse) {
        [self startGettingLocation];
    }
}

- (IBAction)locationButtonAction:(id)sender {
    if (status == kCLAuthorizationStatusAuthorizedAlways || status == kCLAuthorizationStatusAuthorizedWhenInUse) {
        [self startGettingLocation];
    } else if (status == kCLAuthorizationStatusNotDetermined) {
        [self.locationManager requestWhenInUseAuthorization];
    }
}

The problem is that the method locationManager:didChangeAuthorizationStatus is run after view did load too! Method startGettingLocation is started when the user doesn't click button. How to change this code to run startGettingLocation only when user clicks on button.

Answer 1

- (void)viewDidAppear:(BOOL)animated {
    [super viewDidAppear:animated];
    self.initialAuthorizationStatus = [CLLocationManager authorizationStatus];

    self.locationManager = [CLLocationManager new];
    self.locationManager.delegate = self;
    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
}

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
    // If status really did change.
    if (self.initialAuthorizationStatus != status) {
        if (status == kCLAuthorizationStatusAuthorizedAlways || status == kCLAuthorizationStatusAuthorizedWhenInUse) {
            [self startGettingLocation];
        }
    }
}


- (IBAction)locationButtonAction:(id)sender {
    if (status == kCLAuthorizationStatusAuthorizedAlways || status == kCLAuthorizationStatusAuthorizedWhenInUse) {
        [self startGettingLocation];
    } else if (status == kCLAuthorizationStatusNotDetermined) {
        [self.locationManager requestWhenInUseAuthorization];
    }
}