iphone - 如何在 - (void)locationManager:(CLLocationManager *)manager didUpdateToLocation 中只调用一次服务？：

Question

我有一个应用程序，只要发生指定的位置更改，我就需要在其中调用服务。我在委托类中启动了位置控制器，就像这样

    locationController = [[UILocation alloc] init];
    locationController.delegate = self;
    locationController.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    locationController.locationManager.distanceFilter = 1000.0;
    [locationController.locationManager startUpdatingLocation];  

但众所周知，Accuracybest 会以不一致的方式多次调用 didupdate 方法。那么我怎样才能从委托方法中调用我的服务一次呢？有人能指出我如何实现这一点吗？

Answer 1

-(void)postCurrentLocationOfDevice
{

    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.distanceFilter = kCLDistanceFilterNone;
    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest;
    [self.locationManager startUpdatingLocation];
    self.locationManager.delegate = self;

}
-(void)locationManager:(CLLocationManager *)manager didUpdateLocations:(NSArray *)locations
{
   CURRENT_LOCATION = [locations objectAtIndex:0];
    [self.locationManager stopUpdatingLocation];

}

-(void)locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
    CURRENT_LOCATION = newLocation;
    [self.locationManager stopUpdatingLocation];
}

Answer 2

-(void) locationManager:(CLLocationManager *)manager didUpdateToLocation:(CLLocation *)newLocation fromLocation:(CLLocation *)oldLocation
{
[manager stopUpdatingLocation];
}

当第一次位置更新发生时，它将停止位置更新。