我有一个使用RegionMonitoring和updateLocation的应用程序.如果输入某个区域,则会按预期调用didEnterRegion.然后我调用startUpdatingLocation.但是,方法didUpdateToLocation只被调用10-20次,而它应该更新位置,直到计时器触发.

相关代码：

CLLocationManager *_locationManager;
NSTimer *_timer;

-(void)initLocationManager 
{
    _locationManager = [[CLLocationManager alloc] init];
    _locationManager.delegate = self;
    [_locationManager setActivityType:CLActivityTypeOther];
    [_locationManager setDesiredAccuracy:kCLLocationAccuracyBestForNavigation];
    [_locationManager setPausesLocationUpdatesAutomatically:NO];
    [_locationManager setDistanceFilter:kCLDistanceFilterNone];
}


//Did Enter Region,called as expected:
- (void)locationManager:(CLLocationManager *)manager didEnterRegion:(CLRegion *)region
{
    [_locationManager startUpdatingLocation];
    _timer = [NSTimer scheduledTimerWithTimeInterval:300.0f target:self selector:@selector(scheduleMethod:) userInfo:nil repeats:NO];
}


//Timer Fire Method:
- (void) scheduleMethod:(NSTimer*)timer
{
    [Utils writeToLog:@"Timer-Stop"];
    [_locationManager stopUpdatingLocation];
}


//This Method only called 10-20 Times (in the first 10-20 Seconds) and not the complete 5 Minutes:
- (void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
     [Utils writeToLog:@"LocationUpdate!"];
}

到目前为止我尝试过：
在locationManagerDidPauseLocationUpdates方法中重新启动更新,但似乎永远不会调用它：

-(void)locationManagerDidPauseLocationUpdates:(CLLocationManager *)manager
{
    [WRUtils writeToLog:@"LocationUpdate paused,restarted"];
    [_locationManager startUpdatingLocation];
}

检查didFailWithError方法中的错误,但是也没有调用它.
并且演奏了一些属性：

[_locationManager setActivityType:CLActivityTypeOther];
[_locationManager setDesiredAccuracy:kCLLocationAccuracyBestForNavigation];
[_locationManager setPausesLocationUpdatesAutomatically:NO];

Plist设置是正确的我猜：
所需的背景模式是
所需的背景模式
项目0应用程序注册位置更新

我怎么解决这个问题？