Location Manager in iOS 8

The Core Location service in iOS 8 includes now two different modes of authorization: While Using the App and Always.

In our code application we must request the user to accept one of these modes.

• When In Use. This mode allows your app to use the location services when the app is in the foreground.

  if([self.locationManager respondsToSelector:@selector(requestWhenInUseAuthorization)])
     [self.locationManager requestWhenInUseAuthorization];
  

• Always. This mode allows your app to use the location services when the app is in the foreground and in the background.

  if([self.locationManager respondsToSelector:@selector(requestAlwaysAuthorization)])
     [self.locationManager requestAlwaysAuthorization];
  

Finally, we have to add in the Info.plist file of our app the values for the keys NSLocationWhenInUseUsageDescription or/and NSLocationAlwaysUsageDescription. These values contain the messages that will be displayed to the user when requesting the authorization.