WCSession.sendMessage工作50/50 [英] WCSession.sendMessage works 50/50
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.
连接已知问题当使用带有WCSession API的NSNumber和
NSDate对象时，您的应用可能会崩溃。
Connectivity Known Issue Your app may crash when using NSNumber and NSDate objects with the WCSession API.
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IT屋！
