Question

I’m developing an iOS app based on the map and location tracking. When the user first boots the app it asks for permission to track location etc. just fine. The only problem is while it’s doing that, I have code setting up the initial map view and other location-based variables before the user has clicked OK.

I’ve found I can put these initiation steps after a while loop that waits for the user to change the location manager’s permissions as below but this can’t possibly be best practice, not to mention it leads to some strange behavior in the transition between the splash screen and the map:

BOOL firstrun = TRUE;
while ([[locationManager class] authorizationStatus] == kCLAuthorizationStatusDenied || [[locationManager class] authorizationStatus] == kCLAuthorizationStatusNotDetermined) {
    NSLog(@"Waiting for location permission");
}
...initiation code...

Is there a “location access granted” listener for the alert box or a similar function in the location manager delegate I don’t know about? I see no such method in the docs. Anyone know what the best practice is here? Thank you so much.

EDIT
I start my location tracking as follows:

if (nil == locationManager)
    locationManager = [[CLLocationManager alloc] init];

[locationManager startMonitoringSignificantLocationChanges];

self.musicmap.delegate = self;
[self.mymap setShowsUserLocation:true];

Thanks

Answer 1

I would recommend making your class a CLLocationManagerDelegate and then implementing this method:

- (void)locationManager:(CLLocationManager *)manager didChangeAuthorizationStatus:(CLAuthorizationStatus)status {
    //Your code goes here
}

More information about CLLocationManagerDelegate can be found here.

Hope that helps!