Question

var locMgr = INTULocationManager.sharedInstance()
    locMgr.requestLocation(withDesiredAccuracy: .city, timeout: 30, delayUntilAuthorized: true,block: {(currentLoc: CLLocation!, achievedAccuracy: INTULocationAccuracy, status: INTULocationStatus) -> Void in
        if status == INTULocationStatus.success {
        }
        else{
        }

使用了INTULocationManager，Swift 4.1，iOS 11.1

如果是第一次运行此代码，则会弹出“位置许可请求”

但是如果我拒绝，则下次不会弹出。

如何打开“权限弹出”窗口？

我创建按钮

运行此代码

let locationManager = CLLocationManager()
    locationManager.delegate = self
    locationManager.requestWhenInUseAuthorization()

但没有用

Answer 1

没有任何默认功能会在用户拒绝权限后弹出位置权限。您需要向用户显示警告，提示需要权限，然后将用户重定向到“设置”屏幕。这是您可以使用的完整代码。定义一个用于检查位置权限的功能。

    func hasLocationPermission() -> Bool {
        var hasPermission = false
        if CLLocationManager.locationServicesEnabled() {
            switch CLLocationManager.authorizationStatus() {
            case .notDetermined, .restricted, .denied:
                hasPermission = false
            case .authorizedAlways, .authorizedWhenInUse:
                hasPermission = true
            }
        } else {
            hasPermission = false
        }

        return hasPermission
    }

现在通过此功能检查位置权限，并在需要时显示警报。

    if !hasLocationPermission() {
            let alertController = UIAlertController(title: "Location Permission Required", message: "Please enable location permissions in settings.", preferredStyle: UIAlertControllerStyle.alert)

            let okAction = UIAlertAction(title: "Settings", style: .default, handler: {(cAlertAction) in
                //Redirect to Settings app
                UIApplication.shared.open(URL(string:UIApplicationOpenSettingsURLString)!)
            })

            let cancelAction = UIAlertAction(title: "Cancel".localized(), style: UIAlertActionStyle.cancel)
            alertController.addAction(cancelAction)

            alertController.addAction(okAction)

            self.present(alertController, animated: true, completion: nil)
        }

Answer 2

如果用户拒绝权限，则打开Permission PopUp

 /*  func checkLocation() {
    if CLLocationManager.authorizationStatus() != .authorizedWhenInUse
    {
        print("requesting autorization")
        locationManager.requestWhenInUseAuthorization()

    } else {
        print("start updating location")
    }
}*/

func askEnableLocationService() ->String {
    var showAlertSetting = false
    var showInitLocation = false
    if CLLocationManager.locationServicesEnabled() {
        switch CLLocationManager.authorizationStatus() {
        case .denied:
            showAlertSetting = true
            print("HH: kCLAuthorizationStatusDenied")
        case .restricted:
            showAlertSetting = true
            print("HH: kCLAuthorizationStatusRestricted")
        case .authorizedAlways:
            showInitLocation = true
            print("HH: kCLAuthorizationStatusAuthorizedAlways")
        case .authorizedWhenInUse:
            showInitLocation = true
            print("HH: kCLAuthorizationStatusAuthorizedWhenInUse")
        case .notDetermined:
            showInitLocation = true
            print("HH: kCLAuthorizationStatusNotDetermined")
        default:
            break
        }
    }else{
        showAlertSetting = true
        print("HH: locationServicesDisabled")

    }
    if showAlertSetting {
        let alertController = UIAlertController(title: "xxxxxx", message: "Please enable location service in the settings", preferredStyle: .alert)
        let OKAction = UIAlertAction(title: "OK", style: .default) { (action:UIAlertAction!) in



            if let url = URL(string: UIApplicationOpenSettingsURLString) {
                UIApplication.shared.open(url, options: [:], completionHandler: nil)
            }

        }
        alertController.addAction(OKAction)
        self.window?.rootViewController?.present(alertController, animated: true, completion:nil)

    }
    if showInitLocation {

        return "YES"

    }
    return "NO"

}

Answer 3

这是默认行为。第一次显示弹出窗口后。后续请求将被视为已拒绝或在首次选择时选择了任何内容。但是，您可以实施自己的警报并将用户直接发送到设置应用以授予位置访问权限，如下所示：

//check if user has denied the access on first popup
    if !permissionGranted {

        let permissionAlert = UIAlertController(title: "Location Access", message: "Requires location access to take advantage of this feature. Please provide location access from settings", preferredStyle: .alert)

        let cancelAction = UIAlertAction(title: "Cancel", style: .default, handler: nil)
        let settingAction = UIAlertAction(title: "Settings", style: .default) { (action) in
            guard let appSettingURl = URL(string: UIApplicationOpenSettingsURLString) else { return }
            if UIApplication.shared.canOpenURL(appSettingURl) {
                UIApplication.shared.open(appSettingURl, options: [:], completionHandler: nil)
            }
        }
        permissionAlert.addAction(cancelAction)
        permissionAlert.addAction(settingAction)
        present(permissionAlert, animated: true, completion: nil)
    }

Answer 4

快速5

一旦用户拒绝许可，您的应用将禁用警报，警报将再次显示。如果要显示“弹出窗口”以向用户显示需要权限，请运行这些行。

这是您可以使用的完整代码

  if CLLocationManager.locationServicesEnabled() {
        switch CLLocationManager.authorizationStatus() {
        case .notDetermined, .restricted, .denied:
            showPermissionAlert()
        case .authorizedAlways, .authorizedWhenInUse:
            locationManager.startUpdatingLocation()
        }
    } else {
       locationManager.startUpdatingLocation()
    }

现在通过此功能检查位置权限，并在需要时显示警报。

   func showPermissionAlert(){
    let alertController = UIAlertController(title: "Location Permission Required", message: "Please enable location permissions in settings.", preferredStyle: UIAlertController.Style.alert)

    let okAction = UIAlertAction(title: "Settings", style: .default, handler: {(cAlertAction) in
        //Redirect to Settings app
        UIApplication.shared.open(URL(string:UIApplication.openSettingsURLString)!)
    })

    let cancelAction = UIAlertAction(title: "Cancel", style: UIAlertAction.Style.cancel)
    alertController.addAction(cancelAction)

    alertController.addAction(okAction)

    self.present(alertController, animated: true, completion: nil)
}

iOS Swift如何打开位置权限弹出窗口

4 个答案: