谁能解释一下,为什么我立即停止更新,但委托(delegate)方法“CLLocationManager(didUpdateLocations)”被调用了 4 次?我只需要一次当前位置:)
import UIKit
import MapKit
class ContactView: UIViewController, CLLocationManagerDelegate {
let clLocationManager = CLLocationManager()
var latitude: AnyObject = 0.000000
var longitude: AnyObject = 0.000000
override func viewDidLoad() {
super.viewDidLoad()
self.nameTextField.delegate = self
clLocationManager.delegate = self
clLocationManager.desiredAccuracy = kCLLocationAccuracyBest
clLocationManager.requestWhenInUseAuthorization()
clLocationManager.startUpdatingLocation()
}
override func didReceiveMemoryWarning() {
super.didReceiveMemoryWarning()
}
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
CLGeocoder().reverseGeocodeLocation(manager.location!, completionHandler: {
(placemarks, error) -> Void in
self.clLocationManager.stopUpdatingLocation()
if placemarks!.count > 0 {
self.latitude = (manager.location?.coordinate.latitude)!
self.longitude = (manager.location?.coordinate.longitude)!
print(self.latitude)
print(self.longitude)
} else {
print("Error")
}
})
}
}
谢谢!
最佳答案
尝试将 stopUpdatingLocation 从 reverseGeocodeLocation 移到外面
func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
manager.stopUpdatingLocation()
CLGeocoder().reverseGeocodeLocation(manager.location!, completionHandler: {
(placemarks, error) -> Void in
if placemarks!.count > 0 {
self.latitude = (manager.location?.coordinate.latitude)!
self.longitude = (manager.location?.coordinate.longitude)!
print(self.latitude)
print(self.longitude)
} else {
print("Error")
}
})
}
}
关于Swift CLLocationManager(didUpdateLocations) 调用过于频繁,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/35468872/