iBeacon ranging in the background?

Question

I have started to test out iBeacons using estimotes as beacons.

It\'s all running pretty good, but i\'m struggling with getting the app to run properly in the backgr

Answer 1

You do not need to call startUpdatingLocation method.

startMonitoringForRegion method starts monitoring the region only and call the didStartMonitoringForRegion delegate method to let you know when beacon enter/exit the region.

You need to call startRangingBeaconsInRegion method, which calls didRangeBeacons delegate method which gives you array of detected beacons with UUID, major, minor, rssi info of beacons.

For background execution, just use UIBackgroundTaskIdentifier and your code will work in background as well.

- (void)applicationDidEnterBackground:(UIApplication *)application
 {
    NSLog(@"=== DID ENTER BACKGROUND ===");
    UIBackgroundTaskIdentifier bgTask = [[UIApplication  sharedApplication] beginBackgroundTaskWithExpirationHandler:^{
          NSLog(@"End of tolerate time. Application should be suspended now if we do not ask more 'tolerance'");
       }];

   if (bgTask == UIBackgroundTaskInvalid) {
        NSLog(@"This application does not support background mode");
    }
    else {
       //if application supports background mode, we'll see this log.
       NSLog(@"Application will continue to run in background");
    }
}