WatchKit didReceiveApplicationContext 未被调用 [英] WatchKit didReceiveApplicationContext not being called

问题描述

我无法调用didReceiveApplicationContext.有什么想法吗?

I can't get didReceiveApplicationContext to be called. Any ideas?

InterfaceController:

import WatchKit
import Foundation
import WatchConnectivity

class InterfaceController: WKInterfaceController, WCSessionDelegate {

    @IBOutlet var colorLabel: WKInterfaceLabel!

    private let session: WCSession? = WCSession.isSupported() ? WCSession.defaultSession() : nil

    override init() {
        super.init()
        session?.delegate = self
        session?.activateSession()
    }

    override func awakeWithContext(context: AnyObject?) {
        super.awakeWithContext(context)
    }

    func session(session: WCSession, didReceiveApplicationContext applicationContext: [String : AnyObject]){
        let colors : String = applicationContext["color"] as! String
        colorLabel.setText(colors)
        NSLog("session did receive application context")
    }

}

我一直在关注本教程:http://www.kristinathai.com/watchos-2-how-to-communicate-between-devices-using-watch-connectivity/

不会发生 NSLog 或 colorLabel 的设置.不知道我错过了什么.谢谢！

No NSLog or setting of the colorLabel happens. No idea what I'm missing. Thanks!

推荐答案

我将上面的代码复制到一个新的手表应用中，它运行良好.错误必须出在发送方.您确定正在调用 iOS 应用程序中的代码吗?我想您正在使用 Xcode 和两个模拟器，一个用于 iOS 应用，另一个用于 WatchApp.

I copied the above code into a new watch app and it works fine. The error must lay on the sending side. Are you certain the code in the iOS app is being called? I presume you are using Xcode and two simulators, one for the iOS app and one for the WatchApp.

除非在手机模拟器上打开应用程序，否则不会运行iOS端的代码.您在 iOS 端的何处以及如何发出 updateAppContext 调用?

The code on the iOS side is not run unless you open the app on the phone simulator. Where and how on the iOS side are you issuing the updateAppContext call?

在我的测试中，这是我在 iOS 端添加到我的 ViewController.swift 的所有内容(直到我在 iPhone 上启动 iOS 应用程序才会触发此代码.)

In my test, this is all that I added to my ViewController.swift on the iOS side (This code will not be triggered until I start the iOS app on my iPhone.)

override func viewDidLoad() {
    super.viewDidLoad()
    // Do any additional setup after loading the view, typically from a nib.
    let session = WCSession.defaultSession()
    session.delegate = self
    session.activateSession()
    do {
        try session.updateApplicationContext( ["color" : "Red" ])
    } catch _ {

    }
}

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