UIAlertControllerbuttonfunction不起作用

let location = CLLocationCoordinate2D(latitude: 32.075300, longitude: 34.782563) @IBAction func DirectionsTolocationButton(_ sender: Any) { // Create the AlertController and add its actions like button in ActionSheet let ActionSheet = UIAlertController(title: "Please Select A Navigation Service.", message: nil, preferredStyle: .actionSheet) let AppleMapsButton = UIAlertAction(title: "Apple Maps", style: .default) { action -> Void in let destinationName = (self.barNameTemplate ) self.openMapsAppWithDirections(to: self.CoordinatesTemplate, destinationName: destinationName) print("Apple Map Chosen!") } let WazeButton = UIAlertAction(title: "Waze", style: .default) { action -> Void in func openWaze(location : CLLocationCoordinate2D) { if UIApplication.shared.canOpenURL(URL(string: "waze://")!) { // Waze is installed. Launch Waze and start navigation let urlStr: String = "waze://?ll=\(location.latitude),\(location.longitude)&navigate=yes" UIApplication.shared.openURL(URL(string: urlStr)!) } else { // Waze is not installed. Launch AppStore to install Waze app UIApplication.shared.openURL(URL(string: "http://itunes.apple.com/us/app/id323229106")!) } } print("Waze Chosen!") } 

当我selectWazeButton时，没有任何事情发生…… Waze在他们的API中说iv添加到我的Plist中：

 <key>LSApplicationQueriesSchemes</key> <array> <string>waze</string> </array> 

为什么它不适合我？

Answer 1

你需要添加function旁边的function和调用如下。

 func openWaze(location : CLLocationCoordinate2D) { if UIApplication.shared.canOpenURL(URL(string: "waze://")!) { // Waze is installed. Launch Waze and start navigation let urlStr: String = "waze://?ll=\(location.latitude),\(location.longitude)&navigate=yes" UIApplication.shared.openURL(URL(string: urlStr)!) } else { // Waze is not installed. Launch AppStore to install Waze app UIApplication.shared.openURL(URL(string: "http://itunes.apple.com/us/app/id323229106")!) } } 

调用如下

 let WazeButton = UIAlertAction(title: "Waze", style: .default) { action -> Void in self. openWaze(location : your corrdinates)// call here your function print("Waze Chosen!") }