CLRegion background monitoring not occuring - ios

Question

In my project settings > target > Capabilities I have Background Modes ON with "Location Updates" checked.
AppDelegate
- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
self.window = [[UIWindow alloc] initWithFrame:[[UIScreen mainScreen] bounds]];
self.storyController = [StoryController sharedController];
self.storyController.locationManager.delegate = self;
... etc initializing VC ...
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region {
NSLog(#"entered region, %#", region.identifier);
[self handleRegionEvent:region];
}
- (void)locationManager:(CLLocationManager *)manager didExitRegion:(CLRegion *)region {
NSLog(#"exited region, %#", region.identifier);
[self handleRegionEvent:region];
}
- (void)handleRegionEvent:(CLRegion *)region {
NSLog(#"handle region");
if ([UIApplication sharedApplication].applicationState ==
UIApplicationStateActive) {
NSLog(#"handle region local");
UILocalNotification *n = [[UILocalNotification alloc] init];
n.alertBody = #"LOCAL";
n.soundName = #"Default"; //Coffee Man?
[[UIApplication sharedApplication] presentLocalNotificationNow:n];
} else {
if ([[StoryController sharedController] readyForNextChapter]) {
UILocalNotification *n = [[UILocalNotification alloc] init];
n.alertBody = #"New ☕ Story";
n.soundName = #"Default"; //Coffee Man?
[[UIApplication sharedApplication] presentLocalNotificationNow:n];
}
}
}
StoryController
+ (id)sharedController {
static StoryController *myController = nil;
static dispatch_once_t token;
dispatch_once(&token, ^{
myController = [[StoryController alloc] init];
});
return myController;
}
- (id)init {
self = [super init];
self.locationManager = [[CLLocationManager alloc] init];
NSLog(#"monitored regions: %#", self.locationManager.monitoredRegions);
I am monitoring for the region later on with:
CLCircularRegion *region = [[CLCircularRegion alloc] initWithCenter:g.coordinate radius:1000 identifier:"My Store"];
region.notifyOnEntry = true;
region.notifyOnExit = true;
NSLog(#"%d", [CLLocationManager authorizationStatus]);
[[[StoryController sharedController] locationManager] startMonitoringForRegion:region];
I am not receiving any notifications when I leave or enter a 1km range with the app backgrounded.
How do I make this work? When I log out my monitored regions, I do see the lat & lng are correct.

Answer 1

Two things you need to make sure you're doing.
checking for availability of region monitoring
make sure your locationManager.authorizationStatus == .authorizedAlways
Some systems simply don't support region monitoring, and region monitoring will never work unless your authorizationStatus is .authorizedAlways, only then can it monitor in the background.
https://developer.apple.com/library/content/documentation/UserExperience/Conceptual/LocationAwarenessPG/RegionMonitoring/RegionMonitoring.html