ios – 后台的StartUpdateLocations,didUpdatingToLocation只调用了10-20次

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？