iOS 通知和位置服务权限在启动时显示多次答案

【问题标题】：iOS Notifications and location services permissions displaying multiple times at launchiOS 通知和位置服务权限在启动时显示多次
【发布时间】：2018-03-29 06:27:56
【问题描述】：

在 iOS 10+ 中，当我启动我的应用程序时，我会收到两次请求通知和位置服务。第一个短暂出现并立即消失，不允许我执行任何操作，然后我得到第二个弹出窗口，其行为正常，等待用户“允许”或“拒绝”。

这是该问题的gif。

这是我的 AppDelegate 中的通知方法：

 func applicationDidBecomeActive(_ application: UIApplication) {
    // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
    if #available(iOS 10, *) { // iOS 10 support
        UNUserNotificationCenter.current().requestAuthorization(options:[.badge, .alert, .sound]){ (granted, error) in }
        UIApplication.shared.registerForRemoteNotifications()
    }else if #available(iOS 9, *) { // iOS 9 support
        UIApplication.shared.registerUserNotificationSettings(UIUserNotificationSettings(types: [.badge, .sound, .alert], categories: nil))
        UIApplication.shared.registerForRemoteNotifications()
    }
    AppEventsLogger.activate(application)

}

这是我的 AppDelegate 中的位置服务方法：

 func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {

    //
    self.setupLocationService()


 func setupLocationService(){
    self.locationManager.delegate = self
    let status = CLLocationManager.authorizationStatus()
    if status == .authorizedWhenInUse || status == .authorizedAlways{
        self.locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters
        self.locationManager.startUpdatingLocation()
    }else if status == .notDetermined{
        self.locationManager.requestWhenInUseAuthorization()
        self.locationManager.requestAlwaysAuthorization()
    }else{
        print("Location service disabled")
    }
}

【问题讨论】：

我看到 didFinishLaunchingWithOptions 不完整。你能分享 didFinishLaunchingWithOptions 的完整代码吗？

标签： ios swift push-notification apple-push-notifications appdelegate

【解决方案1】：

此问题是由于您要求两次权限请求而发生的。所以你需要改变你的代码如下。

UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .badge, .sound], completionHandler: { (authorised, error) in
    self.setupLocationService()
})

只需像这样更新您的代码。这将首先询问您通知授权请求。基于用户与弹出窗口的交互，然后请求您的位置许可请求。

我希望这对你有用。

【讨论】：

【解决方案2】：

Write notification code in didFinishLaunchingWithOptions

@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate,CLLocationManagerDelegate {

func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
    // Override point for customization after application launch.

    setupLocationService()

    if #available(iOS 10.0, *) {
        // For iOS 10 display notification (sent via APNS)
        UNUserNotificationCenter.current().delegate = self

        let authOptions: UNAuthorizationOptions = [.alert, .badge, .sound]
        UNUserNotificationCenter.current().requestAuthorization(
            options: authOptions,
            completionHandler: {_, _ in })
    } else {
        let settings: UIUserNotificationSettings =
            UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
        application.registerUserNotificationSettings(settings)
    }
    application.registerForRemoteNotifications()

    return true
}

func setupLocationService(){
    self.locationManager.delegate = self
    let status = CLLocationManager.authorizationStatus()
    if status == .authorizedWhenInUse || status == .authorizedAlways{
        self.locationManager.desiredAccuracy = kCLLocationAccuracyHundredMeters
        self.locationManager.startUpdatingLocation()
    }else if status == .notDetermined{
        self.locationManager.requestWhenInUseAuthorization()
        self.locationManager.requestAlwaysAuthorization()
    }else{
        print("Location service disabled")


    }
    }

}

【讨论】：