iOS 9在使用定位服务获取经纬度的时候，系统不调用代理方法，怎么解决？

Question

@interface NearbyViewController (){
// CLLocationManager *_locationManager;
CLGeocoder *_lgeocoder;
}
@property (strong, nonatomic) CLLocationManager *locationManager;

@end

• (void)viewDidLoad {
  [super viewDidLoad];
  // Do any additional setup after loading the view.
  _locationManager = [[CLLocationManager alloc]init];
  _locationManager.delegate = self;
  // _locationManager.desiredAccuracy = kCLLocationAccuracyBest;
  // _locationManager.distanceFilter = 1000.0f;
  [_locationManager startUpdatingLocation];
  }

• (void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations{
  NSLog(@"%@",locations);
  // CLLocation *location = [locations objectAtIndex:0];
  // [self request_NearbyWithWeidu:[NSString stringWithFormat:@"%f",location.coordinate.longitude] Jindu:[NSString stringWithFormat:@"%f",location.coordinate.latitude]];
  // NSLog(@"%f",location.coordinate.longitude);
  // NSLog(@"%f",location.coordinate.latitude);
  [_locationManager stopUpdatingLocation];
  }

• (void)locationManager:(CLLocationManager *)manager didFailWithError:(NSError *)error{
  NSLog(@"%@",error);
  }

Answer 1

  if (IsIOS8) {
    [self.locationManager requestWhenInUseAuthorization];
}
[self.locationManager startUpdatingLocation];

    plist中加入2个key  NSLocationAlwaysUsageDescription    NSLocationWhenInUseUsageDescription