Swift 为什么没有调用locationManager(:didUpdateLocations)
我编写了以下测试代码Swift 为什么没有调用locationManager(:didUpdateLocations),swift,cllocationmanager,Swift,Cllocationmanager,我编写了以下测试代码 @IBAction func btnLocation(_ sender: NSButton) { let locManager = CLLocationManager() if CLLocationManager.authorizationStatus() != .authorized { print("not authorized") } locManager.delegate = self locManager.
@IBAction func btnLocation(_ sender: NSButton) {
let locManager = CLLocationManager()
if CLLocationManager.authorizationStatus() != .authorized {
print("not authorized")
}
locManager.delegate = self
locManager.desiredAccuracy = kCLLocationAccuracyBest
locManager.startUpdatingLocation()
locManager.requestLocation()
}
func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
let location = locations[0]
print(location.coordinate.latitude)
manager.stopUpdatingLocation()
let geoCoder = CLGeocoder()
geoCoder.reverseGeocodeLocation(location, completionHandler: {(places, error) in
let place: CLPlacemark = places![0]
print(place.administrativeArea!)
})
}
func locationManager(_ manager: CLLocationManager, didFailWithError error: Error) {
print(error)
}
func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {
print("authorization changed")
}
但是不会调用locationManager(:didUpdateLocations)
,也不会打印错误。如果我删除locationManager(:didFailWithError)
方法,则启动工作时会打印位置坐标,但Xcode还声明“代理人必须响应locationManager:didFailWithError:
我的代码有什么问题吗?您需要
let locManager = CLLocationManager()
一个实例变量来保存委托的强引用,您还需要其中的1个
locManager.startUpdatingLocation()
locManager.requestLocation()
谢谢。我在类级别上做了let locManager=CLLocationManager()声明,现在可以正常工作了。