Ios 实施'；我的位置'；Swift中的按钮

目前，我正在尝试在地图上添加一个按钮，如果用户在地图上偏离该按钮，该按钮将重新显示用户的当前位置。目前，我有下面写的代码，显示用户的当前位置

    import UIKit
    import MapKit
    import CoreLocation

   class GameViewController: UIViewController,CLLocationManagerDelegate
   {

var lastUserLocation: MKUserLocation?





@IBOutlet weak var Map: MKMapView!

let manager = CLLocationManager()





func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    let location = locations[0]

    let span:MKCoordinateSpan = MKCoordinateSpanMake(0.00775, 0.00775)

    let myLocation: CLLocationCoordinate2D = CLLocationCoordinate2DMake(location.coordinate.latitude,location.coordinate.longitude)

    let region: MKCoordinateRegion = MKCoordinateRegionMake(myLocation, span)
    Map.setRegion(region, animated: true)


    self.Map.showsUserLocation = true
    manager.stopUpdatingLocation()


}



override func viewDidLoad() {
    super.viewDidLoad()
    manager.delegate = self
    manager.desiredAccuracy = kCLLocationAccuracyBest
    manager.requestAlwaysAuthorization()
    manager.startUpdatingLocation()




}

@IBAction func refLocation(_ sender: Any) {
    print("click")
}





override func didReceiveMemoryWarning() {
    super.didReceiveMemoryWarning()
}

}

---

我不确定的是，在@iAction函数中放入什么代码，如果用户在查看其他位置时偏离了它，该函数将允许地图重新居中到用户的当前位置。

为此，您可以在

按钮上再次调用
startUpdatingLocation
方法
CLLocationManager

要获得用户的正确当前位置，您需要从
didUpdateLocations
方法中的
location
数组访问
last
对象

func locationManager(_ manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) {
    //Access the last object from locations to get perfect current location
    if let location = locations.last {        
        let span = MKCoordinateSpanMake(0.00775, 0.00775)        
        let myLocation = CLLocationCoordinate2DMake(location.coordinate.latitude,location.coordinate.longitude)        
        let region = MKCoordinateRegionMake(myLocation, span)
        Map.setRegion(region, animated: true)
    }               
    self.Map.showsUserLocation = true
    manager.stopUpdatingLocation()                
}

现在只需在按钮操作中调用
startUpdatingLocation

@IBAction func refLocation(_ sender: Any) {
    manager.startUpdatingLocation()
}

我尝试时收到了一个NSExceptionimplementation@philhen27在你的问题中加上全部错误，如果可能，显示错误的屏幕截图too@philhen27在故事板中，您为名为location的按钮设置了错误的操作，只需删除与该按钮的连接，它就会对您起作用。@philhen27在故事板中，检查您是否设置了正确的按钮操作，并删除错误的按钮。