swift – 地图按钮刷新位置

概述我正在开发我的第一个快速iPad应用程序.到目前为止,我有一个基本的mapview,底部工具栏中有一个按钮,我想刷新一次,并在点击后关注用户位置. 目前我有这个代码： import UIKitimport MapKitimport CoreLocationclass ViewController: UIViewController, MKMapViewDelegate, CLLocatio 我正在开发我的第一个快速iPad应用程序.到目前为止,我有一个基本的mapvIEw,底部工具栏中有一个按钮,我想刷新一次,并在点击后关注用户位置.

目前我有这个代码：

import UIKitimport MapKitimport CoreLocationclass VIEwController: UIVIEwController,MKMapVIEwDelegate,CLLocationManagerDelegate {var location: CLLocation!let locationManager = CLLocationManager()@IBOutlet weak var mapVIEw: MKMapVIEw!@IBOutlet weak var refresh: UIbarbuttonItem!@IBAction func refresh(sender: AnyObject) {    let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude,longitude: location.coordinate.longitude)    let region = MKCoordinateRegion(center: center,span: MKCoordinateSpan(latitudeDelta: 0.01,longitudeDelta: 0.01))    self.mapVIEw.setRegion(region,animated: true)}overrIDe func vIEwDIDLoad() {    super.vIEwDIDLoad()    self.locationManager.delegate = self    self.locationManager.desiredAccuracy = kCLLocationAccuracyBest    self.locationManager.requestWhenInUseAuthorization()    self.locationManager.startUpdatingLocation()    self.mapVIEw.showsUserLocation = true}overrIDe func dIDReceiveMemoryWarning() {    super.dIDReceiveMemoryWarning()    // dispose of any resources that can be recreated.}// location delegate methodsfunc locationManager(manager: CLLocationManager,dIDUpdateLocations locations: [CLLocation]) {    let location = locations.last    let center = CLLocationCoordinate2D(latitude: location!.coordinate.latitude,longitude: location!.coordinate.longitude)    let region = MKCoordinateRegion(center: center,span: MKCoordinateSpan(latitudeDelta: 1,longitudeDelta: 1))    self.mapVIEw.setRegion(region,animated: true)    self.locationManager.stopUpdatingLocation()}func locationManager(manager: CLLocationManager,dIDFailWithError error: NSError){    print("Error code: " + error.localizedDescription)}

}

如何获取刷新按钮？我真的需要一些帮助,因为我是Swift / xcode的新手:)

谢谢

正如@Orkhan所说,你可以这样做.

如果你想做这个动作你只需简单地按住Ctrl键拖动到vIEwController并选择“Action”.

之后,您可以将代码添加到处理程序.

var location: CLLocation!    @IBAction func refreshLocation(sender: AnyObject) {    let center = CLLocationCoordinate2D(latitude: location.coordinate.latitude,longitude: location.coordinate.longitude)    let region = MKCoordinateRegion(center: center,longitudeDelta: 0.01))    self.map.setRegion(region,animated: true)}func locationManager(manager: CLLocationManager!,dIDUpdateLocations locations: [AnyObject]!) {    self.location = locations.last as CLLocation}

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