iphone - CLLocationManager: didEnterRegion & didExitRegionAlert method did not called -


i using clregion geofencing. monitored clcircularregion set notifyonexit , notifyonentry. here code: 

 cllocationcoordinate2d coordinategym = cllocationcoordinate2dmake(lat,lng);     clcircularregion *regionset = [[clcircularregion alloc]initwithcenter:coordinategym radius:radius identifier:strtitle];     if(isexit)     {         regionset.notifyonexit = yes;         regionset.notifyonentry = no;     }     else     {         regionset.notifyonexit = no;         regionset.notifyonentry = yes;     }     [self.locationmanager startmonitoringforregion:regionset];     [self.locationmanager startupdatingheading];

before monitor region try removed region motinored before it. monitored region. directly invote monitoringdidfailforregion delegate method error: operation couldn’t completed. (kclerrordomain error 4.) error. , not called delegate method.

-(void)locationmanager:(cllocationmanager *)manager didenterregion:(clregion *)region {  -(void)locationmanager:(cllocationmanager *)manager didexitregion:(clregion *)region { }

can me error in code? thanks,


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