swift - WCSession 尚未激活

Question

当我尝试发送内容时收到 WCSession 尚未激活错误。而且我不知道我做错了什么。我已经测试了一些“必须”工作的预制解决方案。但它在我的模拟器和物理设备上不起作用。

部分代码:

我的应用委托(delegate):

import UIKit
import CoreData
import WatchConnectivity


@UIApplicationMain
class AppDelegate: UIResponder, UIApplicationDelegate, WCSessionDelegate {

    var window: UIWindow?


    func session(session: WCSession, didReceiveMessage message: [String : AnyObject], replyHandler: ([String : String]) -> Void) {
        replyHandler(["message": "Hello Watch!"])
    }

    func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?) {
    }

    func sessionDidBecomeInactive(_ session: WCSession) {

    }

    func sessionDidDeactivate(_ session: WCSession) {

    }

    func application(_ application: UIApplication, didFinishLaunchingWithOptions launchOptions: [UIApplicationLaunchOptionsKey: Any]?) -> Bool {
        // Override point for customization after application launch.

        if WCSession.isSupported() {
            let session = WCSession.default()
            session.delegate = self
            session.activate()
        }

        return true
    }

........


}

我的接口(interface) Controller :

import WatchKit
import Foundation
import WatchConnectivity


class InterfaceController: WKInterfaceController {


    override func awake(withContext context: Any?) {
        super.awake(withContext: context)

        // Configure interface objects here.
    }

    override func willActivate() {
        // This method is called when watch view controller is about to be visible to user
        super.willActivate()

        if WCSession.default().isReachable {
            let messageDict = ["message": "hello iPhone!"]

            WCSession.default().sendMessage(messageDict, replyHandler: { (replyDict) -> Void in
                //print(replyDict)
            }, errorHandler: { (error) -> Void in
               // print(error)
            })
        }

    }

    func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?) {
    }

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

    }

    override func didDeactivate() {
        // This method is called when watch view controller is no longer visible
        super.didDeactivate()
    }
}

扩展委托(delegate):

   import WatchKit
    import WatchConnectivity

        class ExtensionDelegate: NSObject, WKExtensionDelegate, WCSessionDelegate {

        func applicationDidFinishLaunching() {
            // Perform any final initialization of your application.
            if WCSession.isSupported() {
                let session = WCSession.default()
                session.delegate = self
                session.activate()
            }
        }

        func session(_ session: WCSession, activationDidCompleteWith activationState: WCSessionActivationState, error: Error?) {
        }

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

            }
    ....

是否有错误的代码或实现？因为没有什么对我有用。

Answer 1

我想出了我遇到的问题，我认为你的问题也很相似。我试图在调用 activate() 后立即发送消息，这在过去有效，但自从引入 session(activationDidCompleteWith:) 函数后，我需要发送我的消息来自那里。

所以我认为您的解决方案是以下之一:

1. 让您的 InterfaceController 成为 WCSessionDelegate，移动所有WCSession 在那里激活调用，并从 session (activationDidCompleteWith:)
2. 发消息自session(activationDidCompleteWith:) 在 ExtensionDelegate 中(在我的应用程序我处理 ExtensionDelegate)
中的所有通信
3. 在 session(activationDidCompleteWith:) 中发布通知ExtensionDelegate 并添加一个观察者来处理它接口(interface) Controller

除此之外，我认为您可能还有一个问题，因为您的 AppDelegate 中 session(didReceiveMessage:) 的声明是错误的(或者至少我在尝试您的代码时遇到了问题。 )

新的声明是:

func session(_ session: WCSession, didReceiveMessage message: [String : Any], replyHandler: @escaping ([String : Any]) -> Void)