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3. Using Location in your iOS Apps — Cor... > Time for action — boundary monitorin...
Let's now move to the next Location Service provided by the iOS Location Manager — Region/Boundary Monitoring. We use the CLRegion class and its method, namely, didEnterRegion to monitor whether the user's position falls in the boundary.
- Open the
Hello Locationproject. In theHello_locationViewController.hfile, add theCLRegiondefinition as follows:CLRegion *boundary;
- In the
Hello_LocationViewController.mfile, we create a circular boundary/region centered around San Francisco geo co-ordinates, with a radius of 1000 meters. We initialize the boundary variable as the following:CLLocationCoordinate2D regionCords = CLLocationCoordinate2DMake (37.78 , -122.408); boundary = [[CLRegion alloc]initCircularRegionWithCenter:regionCords radius:1000.0f identifier:@"San Francisco"];
