问题描述
最近，我正在开发一个与Watch/ iPhone通信相关的项目。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。
Lately, I am working on a project is related to Watch/iPhone communication again. But my code works sometimes and doesn’t work sometimes which is kind of weird to me because I think the code should either work or not. It cannot be 50/50. Therefore, I have no idea what goes wrong.
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上的类似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）{
func sendGesture(gesture : 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上接收消息：
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)
}
以某种方式我可以'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进行单面调试。
somehow I can’t debug my Watch app on Xcode, the debug session just won’t attach. I don’t know why. Therefore, I debug one-sided with just the iPhone.
有时我会打印出接收手势，有时也不会。并且获取通知也是如此。
sometimes I got "receives gesture" print out, and sometimes not. And the same for getting the notification.
推荐答案
我不知道在WCSession中传输时是否会将Int包裹到NSNumber。如果是，那么必须是为什么当我使用Int作为枚举的基类时，它将无法工作，并且当String是基类时可以工作。
I don't know if Int would be wrapped around to NSNumber while being transfer within WCSession. If it would be, then that must be why when I use Int as the base class of the enum it won't work and works when String is the base class.
解决方法：在$之前将NSNumber或NSDate对象转换为字符串b $ b调用WCSession API。在接收
方面进行相反的转换。
Workaround: Convert an NSNumber or NSDate object to a string before calling WCSession APIs. Do the opposite conversion on the receiving side.
这篇关于WCSession.sendMessage工作50/50的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！