CLLocationManager忽略stopUpdatingLocation

Question

我在CLLocationManager調用startUpdatingLocation()，並在didUpdateLocations方法我打電話stopUpdatingLocation()時精度小於100um，像這樣：

func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) { 
    var lastLocation: CLLocation = locations.last! as! CLLocation 
    var accuracy = lastLocation.horizontalAccuracy 

    if (accuracy < 100) { 
     locationCoordinate = lastLocation.coordinate 
     locationManager.stopUpdatingLocation() 
     getData() 
    } 
} 

然而，didUpdateLocations方法仍稱一個或除非我將locationManager設置爲nil，否則在致電stopUpdatingLocations()後再多兩次。很顯然，這也會多次調用我的方法getData()，這是我不想要的。如何在不將其設置爲nil的情況下停止locationManager？

Answer 1

就像H先生所說的那樣，只要使用一個bool即可。

func locationManager(manager: CLLocationManager!, didUpdateLocations locations: [AnyObject]!) { 
    var lastLocation: CLLocation = locations.last! as! CLLocation 
    var accuracy = lastLocation.horizontalAccuracy 

    static bool flag = NO; //Or however this is done in Swift) 

    if (accuracy < 100 && !flag) { //Check the flag in the condition 

     locationCoordinate = lastLocation.coordinate 
     locationManager.stopUpdatingLocation() 
     getData() 

     flag = YES; //Set flag to yes here 

    } 
} 

Answer 2

我也面臨類似的issue.I通過CLLocationManagerDelegate設置爲零