我无法调用WatchConnectivity的会话:didRecieveMessage：

Question

我试图让WatchConnectivity正常工作，但我无法从我的iPhone向我的Apple Watch发送(位置)消息。在AppDelegate中，我设置了会话：

var session: WCSession!    

func application(application: UIApplication, didFinishLaunchingWithOptions launchOptions: [NSObject: AnyObject]?) -> Bool {
    // Override point for customization after application launch.
    if WCSession.isSupported() {
        session = WCSession.defaultSession()
        session.delegate = self
        session.activateSession()
    }
    return true
}

在我的ViewController中：

let manager = CLLocationManager!

override func viewDidLoad() {
    super.viewDidLoad()
    manager.desiredAccuracy = kCLLocationAccuracyBest
    manager.startUpdatingLocation()
    self.manager.delegate = self
    // CLLocationManager status handling code
}

func locationManager(manager: CLLocationManager, didUpdateLocations locations: [CLLocation]) { // I know this is called
    if let locationData = manager.location {
        let location = ["location" : locationData]
        (UIApplication.sharedApplication().delegate as! AppDelegate).session.sendMessage(locationData, replyHandler: nil, errorHandler: nil)
    }
}

下面是相关的接口控制器代码：

var session: WCSession!

override func willActivate() {
    // This method is called when watch view controller is about to be visible to user
    super.willActivate()
    if WCSession.isSupported() {
        session = WCSession.defaultSession()
        session.delegate = self
        session.activateSession()
    }
}


func session(session: WCSession, didReceiveMessage message: [String : AnyObject], replyHandler: ([String : AnyObject]) -> Void) { // This method is never called
    let location = message["location"] as? CLLocation
    print(location)
}

但是，我的InterfaceController没有收到消息，没有打印任何内容，我放置的断点也没有被触发。

有谁能给我指个方向吗？谢谢。

Answer 1

传递给sendMessage的字典内容只能包含属性列表类型(如数字、字符串、数据等基本类型)。我敢打赌，如果您添加了一个错误处理程序，您会得到一个错误，指示无法发送有效负载，因为它包含无效的(非plist)类型

此外，在调用sendMessage时，如果传入的是nil replyHandler，则在接收端调用的委托方法与存在replyHandler时调用的委托方法不同。尝试实现另一个委托didReceiveMessage方法：

func session(session: WCSession, didReceiveMessage message: [String : AnyObject])