iOS 8 Error when requesting Authorization - objective-c

Question

I am having much trouble trying with requesting the location services authorization. I know there are other posts on this forum, but I did not solve my problem with their solution.
This is the error popping up in xCode:
Trying to start MapKit location updates without prompting for location authorization. Must call -[CLLocationManager requestWhenInUseAuthorization] or -[CLLocationManager requestAlwaysAuthorization] first.
I have added both the required keys for the Plist.
Another important point is that when I start it in the simulator, I can go into the setting manually and enable location services and then the App does work. However, when I restart the App it does not work and I get the same message above.
I want to prompt the user with the option to enable location services.
Unfortunately, this code does not prompt the authorization for location services.
Please help I have been pulling my hair out for hours.
1
- (void)viewDidLoad {
[super viewDidLoad];
self.locationManager = [[CLLocationManager alloc]init];
self.locationManager.delegate = self;
if ([self.locationManager respondsToSelector:#selector(requestAlwaysAuthorization)])
{
[self.locationManager requestAlwaysAuthorization];
}
[self.locationManager startUpdatingLocation];
//Initialize the map and specifiy bounds
self.myMapView =[[MKMapView alloc]initWithFrame:self.view.bounds];
//specifcy resizing
self.myMapView.autoresizingMask = UIViewAutoresizingFlexibleWidth | UIViewAutoresizingFlexibleHeight;
//show the User's location and set tracking mode
self.myMapView.showsUserLocation = YES;
self.myMapView.userTrackingMode = MKUserTrackingModeFollow;
//add the VIEW!!
[self.view addSubview:self.myMapView];
}
And here is the Function I want to call
- (void)requestAlwaysAuthorization
{
CLAuthorizationStatus status = [CLLocationManager authorizationStatus];
// If the status is denied or only granted for when in use, display an alert
if (status == kCLAuthorizationStatusAuthorizedWhenInUse || status == kCLAuthorizationStatusDenied) {
NSString *title;
title = (status == kCLAuthorizationStatusDenied) ? #"Location services are off" : #"Background location is not enabled";
NSString *message = #"To use background location you must turn on 'Always' in the Location Services Settings";
UIAlertView *alertView = [[UIAlertView alloc] initWithTitle:title
message:message
delegate:self
cancelButtonTitle:#"Cancel"
otherButtonTitles:#"Settings", nil];
[alertView show];
}
// The user has not enabled any location services. Request background authorization.
else if (status == kCLAuthorizationStatusNotDetermined) {
[self.locationManager requestAlwaysAuthorization];
}
}
- (void)alertView:(UIAlertView *)alertView clickedButtonAtIndex:(NSInteger)buttonIndex
{
if (buttonIndex == 1) {
// Send the user to the Settings for this app
NSURL *settingsURL = [NSURL URLWithString:UIApplicationOpenSettingsURLString];
[[UIApplication sharedApplication] openURL:settingsURL];
}
}

Answer 1

-(void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status
This is the delegate method about location service
You can get your AuthorizationStatus from status.Such as kCLAuthorizationStatusDenied
You simply call
[self.locationManager requestAlwaysAuthorization];in viewdid load,and monitor AuthorizationStatus in delegate method above,if user deny your location service,show a alertview