Question

我目前正在尝试from ttkthemes import ThemedStyle import tkinter as tk from tkinter import ttk app = tk.Tk() app.title('App') style = ThemedStyle(app) style.set_theme("arc") tktext = tk.Label(app, text=" tk Label") tktext.pack() tkbutton = tk.Button(app, text="tk Button") tkbutton.pack() text = ttk.Label(app, text=" ttk Label") text.pack() button = ttk.Button(app, text="ttk Button") button.pack() app.geometry('200x200') app.mainloop()，最近遇到CLLocation。如果用户允许应用使用位置服务，我想显示一个视图，如果用户不允许，则显示另一个视图。除了authorizationStatus以外，它都可以按我的意愿工作。如果我将其插入.notDetermined块中并按“允许使用时”，则无法渲染“允许”页面，而必须重新启动应用程序以渲染它。如果我将其放在.denied块中并按“拒绝”，则也是相反的方法。所以我的问题是，使用此命令有什么好的做法？理想情况下，我希望该应用程序等待用户实际做出选择并从那里加载它，但是由于需要.accesWhenInUse来处理，所以我有点迷路。

到目前为止，我的初始化位置函数：

.notDetermined

我现在根据自己的情况提取了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 } } }。所以问题是，我该如何处理，以便应用程序在做出选择时等待并加载正确的视图？

Answer 1

由于@ Paulw11，我设法使用delegate method来解决此问题。因此，我没有使用initLocation()，而是使用了：

 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.notDetermined是default，直到用户做出我想要的选择之前，它什么都不做。它也会实时更改，因此，如果我拒绝访问位置，然后在应用程序运行时授予它，则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！

.not确定要等待用户的响应

1 个答案: