Question

我将对象设置为locationManager的委托，并调用didChangeAuthorizationStatus方法，这样做：

func locationManager(manager: CLLocationManager!, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
    if status == CLAuthorizationStatus.AuthorizedWhenInUse {
        self.locationManager.startUpdatingLocation()
    }
}

我也有这种方法，在此之后永远不会被调用：

func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) {
    if locations.count == 0 {
        return
    }

    //Do stuff
}

有关为何可能不会被调用的任何想法？我认为被解除分配的对象是一个选项，但是当它达到authorizationStatus方法时它也会被释放。

Answer 1

这对答案来说已经很晚了，但是当我遇到同样的问题时（didChangeAuthorizationStatus被调用但不是didUpdateLocations），我偶然发现了这一点。当然，这不是代码相关的东西，而是我在没有位置设置的模拟器中进行测试。因此，从未找到该位置，导致didUpdateLocations永远不会被调用。

要解决此问题...在模拟器中转到Debug -> Location-> <choose location>。

编辑还应注意，如果未在模拟器中设置位置，locationManager:didFailWithError:将会运行，正如您所期望的那样。

Answer 2

It's working in iOS 10 and iOS 11 as well,

Create property of CLLocationManager using strong and add CLLocationManagerDelegate

@property (strong, nonatomic) CLLocationManager *locationManager;

Add below properties into your info.plist file

Privacy - Location When In Use Usage Description
Privacy - Location Always Usage Description
Privacy - Location Usage Description

Add below method in to your .m file

-(void)getCurrentLocation
{
    self.locationManager = [[CLLocationManager alloc] init];
    self.locationManager.delegate=self;
    self.locationManager.desiredAccuracy=kCLLocationAccuracyBest;
    self.locationManager.distanceFilter=kCLDistanceFilterNone;
    [self.locationManager requestWhenInUseAuthorization];
    [self.locationManager startMonitoringSignificantLocationChanges];
    [self.locationManager startUpdatingLocation];
}

and just call [self getCurrentLocation] method.

Answer 3

以下是我应用的摘录：

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: NSDictionary?) -> Bool {
    ...
    locationManager.delegate = self
    locationManager.activityType = CLActivityType.Fitness
    locationManager.distanceFilter = 10   // 10m
    locationManager.requestAlwaysAuthorization()

    // get current location
    if CLLocationManager.authorizationStatus() == CLAuthorizationStatus.Authorized {
        locationManager.startUpdatingLocation()
    }
}

func locationManager(manager: CLLocationManager!, didChangeAuthorizationStatus status: CLAuthorizationStatus) {
    if status == .Authorized {
        locationManager.startUpdatingLocation()
    }
}

您必须将NSLocationAlwaysUsageDescription密钥放在Info.plist中，并将值设置为授权问题。这是iOS 8的要求。

didUpdateLocations未被调用

3 个答案: