iOS 8.0 LocationManager related changes

When thought to write a location manager test app, as usual, wrote the following few lines and tried to test 

 if(m_foregroundLocationManager == nil)

    {

        self.m_foregroundLocationManager = [[CLLocationManager alloc]init];

    }

    self.m_foregroundLocationManager.delegate = self;

    [self.m_foregroundLocationManager startUpdatingLocation];

But this resulted in giving the below errors 

is depending on legacy on-demand authorization, which is not supported 

Googling this around, lead to few interesting facts 

Application need to have either of the below two keys in the plist. IF not, the location manager won’t start. 

NSLocationWhenInUseUsageDescription

NSLocationAlwaysUsageDescription 

This property accepts String value which will be used by the iOS framework when any of the below APIs are called with the intent of 

requesting user to grant permission on behalf of user 

self.locationManager requestWhenInUseUsageAuthorization

self.locationManager requestWhenAlwaysUsageAuthorization 

If the app has the main functionality to do something in the foreground and only some of the secondary functionality in background, then can add both the keys into the plist

Buf if in background location is part of the main functionality, then add request always authorisation. 

Below are the location types that needs always allow authorisation permission 

- Significant location change

- Boundary crossing 

- Background location updates (e.g. Fitness, Navigation apps) 

- iBeacons 

- Visited Locations (iOS 8.0+)

- Deferred location updates 

All these location types have the power to wake up the app from suspended or terminated when a location event occurs. If the application is given only

when in use authorisation, these services will work only when the app is in the background. 

However, in iOS 8.0, application can request system to present a local notification to the user when user crosses a set location boundary (geofence). When the user 

crosses the boundary, system sends a local notification from the app but without waking up the app. If the user chooses to open the notification, the app will wake up

and can receive the boundary information. 

These are the basics of Location changes in the iOS 8.0 version. 

References:

http://nevan.net/2014/09/core-location-manager-changes-in-ios-8/