.notDetermined 等待用户响应

.notDetermined to wait for a response from user

我目前正在试验 CLLocation,最近遇到了 authorizationStatus。如果用户允许应用程序使用位置服务,我想显示一个视图,如果 he/she 不允许,我想显示另一个视图。它按我想要的方式工作,除了 .notDetermined。如果我将它插入 .denied-block 并按 "Allow when in use",我无法呈现 "allow" 页面,而是必须重新启动应用程序才能呈现它。如果我把它放在我的 .accesWhenInUse 块中并按 "deny",它也是相反的。所以我的问题是,使用此命令的最佳做法是什么?理想情况下,我希望应用程序等到用户实际做出选择并从那里加载它,但是由于需要 .notDetermined 来处理我有点迷路。

到目前为止我的初始位置功能:

   private func initLocation() {
    self.locationManager.requestWhenInUseAuthorization()
    if CLLocationManager.locationServicesEnabled() {
        switch CLLocationManager.authorizationStatus() {

        case .authorizedWhenInUse, .authorizedAlways  :
            locationManager.delegate = self
            locationManager.desiredAccuracy = kCLLocationAccuracyNearestTenMeters
            locationManager.startUpdatingLocation()
            break

        case .notDetermined:
            break

        case .restricted, .denied:
            print("well this is awkward..")
            view.addSubview(noLocationTextView)

            NSLayoutConstraint.activate([
                noLocationTextView.heightAnchor.constraint(equalToConstant: 210),
                noLocationTextView.widthAnchor.constraint(equalToConstant: 210),
                noLocationTextView.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
                noLocationTextView.centerYAnchor.constraint(equalTo: self.view.centerYAnchor)
                ])

            noLocationTextView.text = "Well we're going to need your location"
            break
        }
      }

    }

我现在已经将 .notDetermined 提取到它自己的案例中。 所以问题是,我该如何处理这个问题,以便应用程序在做出选择时等待并加载正确的视图?

感谢@Paulw11,我设法使用 delegate method 解决了这个问题。所以我没有使用我的 initLocation(),而是使用了这个:

 func locationManager(_ manager: CLLocationManager, didChangeAuthorization status: CLAuthorizationStatus) {

        switch status {
        case .authorizedWhenInUse, .authorizedAlways:

            goToLocationSettings.removeFromSuperview()
            noLocationContainer.removeFromSuperview()
            break
        case .denied, .restricted:
            print("well this is awkward..")
            view.addSubview(noLocationContainer)

           NSLayoutConstraint.activate([
                noLocationContainer.heightAnchor.constraint(equalTo: self.view.heightAnchor),
                noLocationContainer.widthAnchor.constraint(equalTo: self.view.widthAnchor),
                ])

            noLocationContainer.insertSubview(goToLocationSettings, at: 3)

            NSLayoutConstraint.activate([
                goToLocationSettings.widthAnchor.constraint(equalToConstant: 300),
                goToLocationSettings.centerXAnchor.constraint(equalTo: self.view.centerXAnchor),
                goToLocationSettings.centerYAnchor.constraint(equalTo: self.view.centerYAnchor, constant: 200),
                goToLocationSettings.heightAnchor.constraint(equalToConstant: 50)
                ])

            break

        default:

            break
        } 
}

这种方式 .notDetermineddefault 在用户做出选择之前什么都不做,就像我想要的那样。它还会实时更改,因此如果我拒绝访问位置然后在应用程序 运行 时授予它,它只会更新视图并显示内容。希望这对遇到类似问题的人有所帮助!