ios - 当应用程序处于后台时如何在 didReceiveRemoteNotification 上打开特定的 View Controller

Question

我正在实现一个警报，我从服务器收到 pushNotification，我收到完美的推送通知并且它在前台模式下工作正常但是当应用程序进入后台时它只收到推送通知但没有加载我想要的 View 加载

请检查下面的代码

func registerForPushNotifications(application: UIApplication) {
    let notificationSettings = UIUserNotificationSettings(
        forTypes: [.Badge, .Sound, .Alert], categories: nil)
    application.registerUserNotificationSettings(notificationSettings)
}

此方法从 didFinishLaunchingWithOptions 调用

func application(application: UIApplication, didRegisterUserNotificationSettings notificationSettings: UIUserNotificationSettings) {
    if notificationSettings.types != .None {
        application.registerForRemoteNotifications()
    }
}

func application(application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: NSData) {
    let tokenChars = UnsafePointer<CChar>(deviceToken.bytes)
    var tokenString = ""
    for i in 0..<deviceToken.length {
        tokenString += String(format: "%02.2hhx", arguments: [tokenChars[i]])
    }
    NSUserDefaults.standardUserDefaults().setObject(tokenString, forKey: "deviceToken")
}

这是最后的方法

    func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject]) {
        print(userInfo)
        let storyboard = UIStoryboard(name: "Main", bundle: nil)
        let navigationController = storyboard.instantiateViewControllerWithIdentifier("AlarmDetailsController") as! AlarmDetailsController
        //let dVC:AlarmDetailsController = navigationController.topViewController as! AlarmDetailsController
        navigationController.isPushNotification = true
        self.window?.rootViewController?.presentViewController(navigationController, animated: true, completion: {})        
}

请帮我解决这个问题记住我的应用程序在前台模式下运行良好

Answer 1

1.首先你应该在应用“Capabilities”中开启Background Fetch2. 然后在app delegate中使用如下代码

在 AppDelegate 类中添加如下代码:

func application(_ application: UIApplication, didReceiveRemoteNotification userInfo: [AnyHashable: Any], fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void) {
       // print(userInfo)
let vc = mainStoryBoard.instantiateViewController(withIdentifier: "destinationVC") as! destinationVC
                            self.visibleNavController.pushViewController(vc, animated: true)
    }

对于 iOS 10，请使用以下代码:1.导入

 import UserNotifications

用于前台获取

     @available(iOS 10.0, *)
        func userNotificationCenter(_ center: UNUserNotificationCenter, willPresent notification: UNNotification, withCompletionHandler completionHandler: @escaping (_ options: UNNotificationPresentationOptions) -> Void) {
            var userInfo = NSDictionary()
            userInfo = notification.request.content.userInfo as NSDictionary
            let pay = userInfo as NSDictionary
   let driverLocationVC = mainStoryBoard.instantiateViewController(withIdentifier: "destinationVC") as! destinationVC
                                self.visibleNavController.pushViewController(driverLocationVC, animated: true)


    }

背景

 @available(iOS 10.0, *)
    func userNotificationCenter(_ center: UNUserNotificationCenter, didReceive response: UNNotificationResponse, withCompletionHandler completionHandler: @escaping () -> Void) {
        print("Userinfo \(response.notification.request.content.userInfo)")


        var userInfo = NSDictionary()
        userInfo = response.notification.request.content.userInfo as NSDictionary
        print(userInfo)
    let driverLocationVC = mainStoryBoard.instantiateViewController(withIdentifier: "DriverLocationVC") as! DriverLocationVC
                            self.visibleNavController.pushViewController(driverLocationVC, animated: true)
}

用于获取设备 token

 func application(_ application: UIApplication, didRegisterForRemoteNotificationsWithDeviceToken deviceToken: Data) {
        let tokenString = deviceToken.reduce("", {$0 + String(format: "%02X", $1)})
        print("Got token data! \(tokenString)")

        UserDefaults.standard.set(tokenString, forKey: "device_token")
        UserDefaults.standard.synchronize()
    }