Question

我希望在app启动时调用一次didRegisterForRemoteNotificationsWithDeviceToken:以响应推送通知注册。

但是，我注意到它被称为2次：一次推送通知注册成功，用户点击“允许访问”的其他时间！鉴于文件，后者不是预期的。

推送通知注册码：

        let settings: UIUserNotificationSettings =
              UIUserNotificationSettings(types: [.alert, .badge, .sound], categories: nil)
        application.registerUserNotificationSettings(settings)
        application.registerForRemoteNotifications()

仅在iOS 10中发生。我尝试在iOS 9上运行它并且不会在那里发生。
我确保不会多次调用registerForRemoteNotifications。

一些观察（如预期的那样）：

当我只调用registerForRemoteNotifications而不是registerUserNotificationSettings时，didRegisterForRemoteNotificationsWithDeviceToken:只会被调用一次。
当我仅呼叫registerUserNotificationSettings而非registerForRemoteNotifications时，则根本不会调用didRegisterForRemoteNotificationsWithDeviceToken:。

感谢您的帮助。

Answer 1

为此你需要在应用程序中调用方法registerForRemoteNotifications didFinishLaunchingWithOptions launchOptions：

   // Method For ReGister Notification 

func registerUserNotifications() {
    UNUserNotificationCenter.current().requestAuthorization(options: [.alert, .sound, .badge]) {
        (granted, error) in
        print("Permission granted: \(granted)")
        guard granted else { return }
        self.getNotificationSettings()
    }
}

 // Method For seeting if User Don;t allow For Remote Notification

  func getNotificationSettings() {
    UNUserNotificationCenter.current().getNotificationSettings { (settings) in
        print("Notification settings: \(settings)")
        guard settings.authorizationStatus == .authorized else { return }
        DispatchQueue.main.async(execute: {
            UIApplication.shared.registerForRemoteNotifications()
        })
    }
}
    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
           // Override point for customization after application launch.
    registerUserNotifications()

    return true
}

didRegisterForRemoteNotificationsWithDeviceToken调用'允许访问'

1 个答案: