我真的需要一个帮助来调用视图控制器方法,当我的应用程序在远程通知进入时打开,特别是在使用选项卡栏导航时。当我在通知到达时打开我的应用程序时,它将调用didReceiveRemoteNotification,因为我启用了“content available=1”。但是,问题是我不知道如何访问我的HomeViewController方法refresh(),因为我使用了TabBar导航,我需要在HomeViewController中调用refresh()didReceiveRemoteNotification方法,因为它确实需要刷新core中的数据,并且到达的通知保存在core data中。
每次收到通知时,我都会将它们保存在realm数据库中,并在HomeViewController

func application(application: UIApplication, didReceiveRemoteNotification userInfo: [NSObject : AnyObject], fetchCompletionHandler handler: (UIBackgroundFetchResult) -> Void) {
    if let aps = userInfo["aps"] as? NSDictionary{
        if let alert = aps["alert"] as? NSDictionary{
            if let mbody = alert["body"] as? String{
                print("Message Body : \(body)")
                body = mbody
            }
            if let mtitle = alert["title"] as? String{
                print("Message Title : \(title)")
                title = mtitle
            }
        }
    }

    let newNotification = NotificationList()
    newNotification.title = title
    newNotification.body = body
    //Realm insert query
    oneSignalHelper.insertOneSignalNotification(newNotification)

    print("Remote Receive")
    //This condition isn't working
    if let viewController = self.window?.rootViewController as? HomeViewController {
        print("Remote Receive Read")
        //This method is HomeViewController method which I gonna use for refresh when I tapped notification.It read that are save in realm database and show results.
        viewController.readNotificationsAndUpdateUI()
    }

    handler(UIBackgroundFetchResult.NewData)

}

这是readNotificationsAndUpdateUI()中的HomeViewController
func readNotificationsAndUpdateUI(){
    notifications = realm.objects(NotificationList)
    self.notificationTableView.setEditing(false, animated: true)
    self.notificationTableView.reloadData()
    self.refreshControl?.endRefreshing()
}

最佳答案

我建议您使用NSNotificationCenter,只需在didReceiveRemoteNotification中像这样发布通知:

NSNotificationCenter.defaultCenter().postNotificationName("refreshNotification", object: nil)

viewDidLoad()中的HomeViewController中,您应该订阅通知中心,如下所示:
NSNotificationCenter.defaultCenter().addObserver( self, selector: "refresh", name: "refreshNotification", object: nil)

关于swift - 如果我使用TabBar导航,如何从AppDelegate调用viewcontroller方法,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/34281938/

10-12 19:35