WCSession.sendMessage工作50/50

Question

最近,我正在研究一个与Watch/ iPhone通信有关的项目.但是我的代码有时工作并且有时不起作用,这对我来说有点奇怪,因为我认为代码应该工作与否.它不能是50/50.因此,我不知道出了什么问题.

在iPhone上设置WCSession:

class WatchCommunicationController: NSObject, WCSessionDelegate {

    var session : WCSession?

    override init(){

        //  super class init
        super.init()

        //  if WCSession is supported
        if WCSession.isSupported() {    //  it is supported

            //  get default session
            session = WCSession.defaultSession()

            //  set delegate
            session!.delegate = self

            //  activate session
            session!.activateSession()

        } else {

            print("iPhone does not support WCSession")
        }
    }

    ... ...
}

Watch上类似的WCSession设置:

class PhoneCommunicationController: NSObject, WCSessionDelegate {

    var session : WCSession?

    override init(){

        //  super class init
        super.init()

        //  if WCSession is supported
        if WCSession.isSupported() {    //  it is supported

            //  get default session
            session = WCSession.defaultSession()

            //  set delegate
            session!.delegate = self

            //  activate session
            session!.activateSession()
        } else {

            print("?Watch does not support WCSession")
        }
    }

    ... ...
}

发送消息观察:

func sendGesture(手势:GKGesture){

//  if WCSession is reachable
if session!.reachable {     //  it is reachable

    //  create the interactive message with gesture
    let message : [String : AnyObject]
    message = [
                "Type":"Gesture",
                "Content":gesture.rawValue
              ]

    //  send message
    session!.sendMessage(message, replyHandler: nil, errorHandler: nil)
    print("?Watch send gesture \(gesture)")

} else{                     //  it is not reachable

    print("WCSession is not reachable")
}

}

相关枚举:

enum GKGesture: Int {
    case Push = 0, Left, Right, Up, Down
}

在iPhone上收到消息:

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

        //retrieve info
        let type = message["Type"] as! String
        let content = message["Content"]

        switch type {

        case "Gesture":
            handleGesture(GKGesture(rawValue: content as! Int)!)
        default:
            print("Received message \(message) is invalid with type of \(type)")
        }

    }

    func handleGesture(gesture : GKGesture){

        print("iPhone receives gesture \(gesture)")

        var notificationName = ""

        switch gesture {

        case .Up:
            notificationName = "GestureUp"
        case .Down:
            notificationName = "GestureDown"
        case .Left:
            notificationName = "GestureLeft"
        case .Right:
            notificationName = "GestureRight"
        case .Push:
            notificationName = "GesturePush"
        }

        NSNotificationCenter.defaultCenter().postNotificationName(notificationName, object: nil)

    }

不知怎的,我无法在Xcode上调试我的Watch应用程序,调试会话就不会附加.我不知道为什么.因此,我只用iPhone调试片面.

有时我打印出"接收手势",有时不打印.同样获取通知也是如此.

Answer 1

我不知道在WCSession中传输时是否会将Int包裹到NSNumber.如果它是,那么这必然是为什么当我使用Int作为枚举的基类时,它将无法工作并且当String是基类时有效.

连接已知问题将NSNumber和NSDate对象与WCSession API一起使用时,您的应用可能会崩溃.

解决方法:在调用WCSession API之前,将NSNumber或NSDate对象转换为字符串.在接收方进行相反的转换.

观看OS 2 Beta 4发行说明