swift - 我无法获得 WatchConnectivity 的 session :didRecieveMessage: to be called

Question

我已尝试让 WatchConnectivity 正常工作，但我无法将(位置)消息从我的 iPhone 发送到我的 Apple Watch。 在 AppDelegate 中，我设置了 session :

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)
    }
}

这里是相关的接口(interface) Controller 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，也没有触发我设置的断点。

谁能指出我正确的方向？谢谢。

Answer 1

传递给sendMessage的字典内容只能包含属性列表类型(基本如数字、字符串、数据等)。我敢打赌，如果您添加了一个错误处理程序，您会收到一条错误消息，指示无法发送有效负载，因为它包含无效(非 plist)类型

此外，当您调用 sendMessage 时，如果您传入一个 nil replyHandler，则在接收方将调用与有 replyHandler 时不同的委托(delegate)方法。尝试实现另一个委托(delegate) didReceiveMessage 方法:

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