IOS Whatsap杀了我的背景本地化APP

Question

我有一个应用程序，可以在后台进行位置跟踪。一旦我收到WhatsApp或手机，我的位置就会停止并在看到图像后恢复。有人会有关于这个问题的信息吗？

Image

- (void) startUpdatingLocationFonction
{
[self.locationManager setDesiredAccuracy:kCLLocationAccuracyBest];
[self.locationManager setDistanceFilter:kCLDistanceFilterNone];
[self.locationManager startUpdatingLocation];
self.locationManagerStartDate = [NSDate date];
}

- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
[AppDelegate sharedInstance].latitude=newLocation.coordinate.latitude;
[AppDelegate sharedInstance].longitude=newLocation.coordinate.longitude;

if (![[FoncGlobal sharedFoncGlobal] isValidLocation:(CLLocation *)newLocation withOldLocation:(CLLocation *)oldLocation])
    return;

if ((oldLocation.coordinate.longitude != newLocation.coordinate.longitude)
    || (oldLocation.coordinate.latitude != newLocation.coordinate.latitude))
    {
    [[FoncGlobal sharedFoncGlobal] upDateTraceUser: [NSString stringWithFormat:@"%.8lf",newLocation.coordinate.latitude]: [NSString stringWithFormat:@"%.8lf",newLocation.coordinate.longitude] :[NSString stringWithFormat:@"%.8lf",newLocation.altitude]:[NSString stringWithFormat:@"%.8lf",newLocation.speed]:0];
    }
}

- (void)locationManager:(CLLocationManager *)manager didDetermineState:(CLRegionState)state forRegion:(CLRegion *)region
{
if (_inBackground) {
    [self extendBackgroundRunningTime];
   }
}

 - (void)applicationDidEnterBackground:(UIApplication *)application
{
[self extendBackgroundRunningTime];
_inBackground = YES;
}

- (void)applicationDidBecomeActive:(UIApplication *)application
{
_inBackground = NO;
}
- (void)extendBackgroundRunningTime {
    if (bgTask != UIBackgroundTaskInvalid) {
        return;
    }

    NSLog(@"Attempting to extend background running time");

    __block Boolean self_terminate = NO;

    bgTask = [[UIApplication sharedApplication] beginBackgroundTaskWithName:@"DummyTask" expirationHandler:^{
        NSLog(@"Background task expired by iOS");
        if (self_terminate) {
            [[UIApplication sharedApplication] endBackgroundTask:bgTask];
            bgTask = UIBackgroundTaskInvalid;
        }
    }];

    dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
        while (true) {

        if ([AppDelegate sharedInstance].startTrack)
            [self startUpdatingLocationFonction];

        [NSThread sleepForTimeInterval:3];
        }

    });
}