"留言回复花了太长时间." - 观察Watch OS 3的连接问题

Question

在我的项目中,我Watch Connectivity用来向Watch和iPhone发送消息.我可以向手机发送消息并在启动应用程序时收到一串字符串,但是在使用操作时,我收到以下错误;

错误域= WCErrorDomain代码= 7012"消息回复花了太长时间."

这是事情的建立方式;

首先,手表向手机发送消息,然后手机发送一串字符串以显示在手机中WKInterfaceTable.这有时适用于加载应用程序.(我获取所有调用的NSManagedObjects Items并使用它们的title字符串属性存储在被array调用的中watchItems.

但是,我在手表上有一个操作,删除数组中的所有项目并使用新数据刷新表格.

手表上的操作使用一个sendMessage功能发送item到手机以从阵列中删除,然后手机将新更新的阵列发送到手表,手表更新表.但是,我要么返回相同的数组,要么出错.

非常简单,所以在Swift 3和Watch OS3/iOS 10之前一切正常工作; 整个应用程序曾经工作过.

这是我如何设置一切;

电话应用代表

import WatchConnectivity

class AppDelegate: UIResponder, UIApplicationDelegate, WCSessionDelegate {

var session : WCSession!

var items = [Items]()

func loadData() {
    let moc = (UIApplication.shared.delegate as! AppDelegate).managedObjectContext
    let request = NSFetchRequest<Items>(entityName: "Items")

    request.sortDescriptors = [NSSortDescriptor(key: "date", ascending: true)]
    request.predicate = NSPredicate(format: "remove == 0", "remove")

    do {
        try
            self.items = moc!.fetch(request)
        // success ...
    } catch {
        // failure
        print("Fetch failed")
    }
}

//WATCH EXTENSION FUNCTIONS
//IOS 9.3 
/** Called when the session has completed activation. If session state is WCSessionActivationStateNotActivated there will be an error with more details. */


//HAVE TO INCLUDE
@available(iOS 9.3, *)
func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?){
   print("iPhone WCSession activation did complete")
}


@available(iOS 9.3, *)
func sessionDidDeactivate(_ session: WCSession) {}

func sessionWatchStateDidChange(_ session: WCSession) {}

func sessionDidBecomeInactive(_ session: WCSession) {

}

//APP DELEGATE FUNCTIONS

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

    //Check if session is supported and Activate
    if (WCSession.isSupported()) {
        session = WCSession.default()
        session.delegate = self;
        session.activate()
    }
    return true
}


}

//DID RECIEVE MESSAGE
func session(_ session: WCSession, didReceiveMessage message: [String : Any], replyHandler: @escaping ([String : Any]) -> Swift.Void) {


    loadData()

    func loadItems() {
        watchItems.removeAll()

        for a in self.items {
            watchItems.append(a.title)
        }
    }

    var watchItems = ["1","2","3","4","5"]

    let value = message["Value"] as? String

    //This is called when user loads app, and takes some time when using refresh action, sometimes times out 

    if value == "HELLOiPhone/+@=" {

        print("Hello Message Recieved")

        loadItems() 

        //send a reply
        replyHandler( [ "Items" : Items ] )

    }

    //Not sure if receiving but does not delete array and send back to watch
    if value == "removeALL@+=-/" {                        
        for index in self.items {
            index.remove = 1
            //Saves MOC
        }

        loadData()
        loadTasksData()

        //send a reply
        replyHandler( [ "Items" : Items ] )

    }
    else {
        for index in self.items {
            if index.title == value {
            index.remove = 1
            //Saves MOC
            }
        }

        loadData()
        loadTasksData()

        //send a reply
        replyHandler( [ "Items" : Items ] )
    }
}

看

import WatchConnectivity

class SimplelistInterfaceController: WKInterfaceController, WCSessionDelegate  {


/** Called when the session has completed activation. If session state is WCSessionActivationStateNotActivated there will be an error with more details. */
@available(watchOS 2.2, *)
public func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?) {

   //Fetch data is a function which sends a "HELLOiPhone/+@=" message to receive the array and displays in the table. This works 
   fetchData()
}


var session : WCSession!
var items = ["Refresh Items"]

override func didAppear() {
    fetchData()
}

override func willActivate() {
    // This method is called when watch view controller is about to be visible to user
    super.willActivate()
    //Check if session is supported and Activate
    if (WCSession.isSupported()) {
        session = WCSession.default()
        session.delegate = self
        session.activate()
    }
    fetchData()
}

override func awake(withContext context: Any?) {
    super.awake(withContext: context)
    fetchData()
}

@IBAction func refresh() {
    print("Refresh")
    //Works but sometimes message is delayed
    fetchData()
}

@IBAction func removeAll() {
    print("Remove All Items is called")
    if WCSession.default().isReachable {
        let messageToSend = ["Value":"removeALL@+=-/"]
        print("\(messageToSend)")
        session.sendMessage(messageToSend, replyHandler: { replyMessage in
            if let value = replyMessage["Items"] {
                self.items = value as! [String]

                Not receiving message
                print("Did Recieve Message, items = \(self.items)")
            }

            }, errorHandler: {error in
                // catch any errors here
                print(error)
        })
    }
    fetchData()
}

}

Answer 1

我刚刚处理了我的 WatchOS 应用程序。还有一种情况是我收到“消息回复时间太长”。

然后我将后台任务处理程序添加到我的 iOS 应用程序中，并开始每秒向 WatchOS 应用程序发送消息。消息中包含UIApplication.shared.backgroundTimeRemaining。所以我得到：45秒，44秒，...，6秒，5秒，...如果计时器运行时间低于5秒，则不会向iOS应用程序发送消息或从iOS应用程序发送消息，我们将收到“消息回复时间太长”。最简单的解决方案是每次计时器低于 15 秒时，从手表向手机发送空白消息。将backgroundTimeRemaining再次更新为 45 秒：45, 44, 43, ..., 17, 16, 15, (空白消息), 45, 44, 43, ...

希望它可以帮助某人