Swift WatchOS2的调试建议

我已经阅读了WatchOS 2中的例子，这本教程是由位于的团队编写的，特别是第18章。它们都很好用。在我自己的应用程序中，我试图从手表上发送一个按钮来启动iPhone应用程序上的一个按钮。以下是手表和手机上的Swift相关代码：

观察：

//
//  InterfaceController.swift
//  Wasted Time Extension
//
//  Created by Michael Rowe on 7/21/15.
//  Copyright © 2010-2015 Michael Rowe. All rights reserved.
//

import WatchKit
import WatchConnectivity
import Foundation


class InterfaceController: WKInterfaceController,WCSessionDelegate {

    @IBOutlet var wasteLabel: WKInterfaceLabel!
    @IBOutlet var costLabel: WKInterfaceLabel!
    @IBOutlet var counter: WKInterfaceLabel!
    @IBOutlet var statusButton: WKInterfaceButton!

    // our watchconnective session
    var session : WCSession?


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

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

        if(WCSession.isSupported()){
            session = WCSession.defaultSession()
            session!.delegate = self
            session!.activateSession()
        }
    }

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

    func session(session: WCSession, didReceiveMessage message: [String: AnyObject], replyHandler: [String: AnyObject] -> Void) {

        print("Did receive message Watch \(message)")
    }

    @IBAction func addButtonPressed() {

        // Pull values from the Phone for current meeting cost, waste costs, and people in meeting
        let prefs:NSUserDefaults = NSUserDefaults(suiteName: "a.b.c")!

        var counterd = prefs.doubleForKey("keyPeopleInMeeting")


        counterd++
        counter.setText(String(format:"%9.0f", counterd))

        // Sending data to iPhone via Interactive Messaging
        if WCSession.isSupported(){
            // we have a watch supporting iPhone

            let session = WCSession.defaultSession()

            // we can reach the watch
            if session.reachable {
                let message = ["add": "1"]
                print("Message \(message)")
                session.transferUserInfo(message)
                print("Send Message Add - People \(counterd)")
            }
        }

        if WCSession.isSupported() {
            let session = WCSession.defaultSession()
            if session.reachable {
            let message = ["add":"1"]
            session.sendMessage(message, replyHandler: { ( reply: [String: AnyObject]) -> Void in
            print("Reply: \(reply)")
            }, errorHandler: { (error: NSError) -> Void in
            print("ERROR Watch: \(error.localizedDescription)")
            })
        } else { // reachable
            self.showReachabilityError()
            }
        }

        print("Watch Add Button Pressed \(counterd)")
    }

    @IBAction func minusButtonPressed() {
        // Pull values from the Phone for current meeting cost, waste costs, and people in meeting
        let prefs:NSUserDefaults = NSUserDefaults(suiteName: "a.b.c")!

        var counterd = prefs.doubleForKey("keyPeopleInMeeting")
        counterd--
        if (counterd <= 1) {
            counterd = 1
        }
        counter.setText(String(format:"%9.0f", counterd))

        if WCSession.isSupported() {
            let session = WCSession.defaultSession()
            if session.reachable {
                let message = ["minus":"1"]
            session.sendMessage(message, replyHandler: { ( reply: [String: AnyObject]) -> Void in
            print("Reply: \(reply)")
            }, errorHandler: { (error: NSError) -> Void in
            print("ERROR Watch: \(error.localizedDescription)")
            })
            } else { // reachable
                self.showReachabilityError()
            }
        }

        print("Watch Minus Button Pressed \(counterd)")
 }

    func statusButtonPressed() {
        // Pull values from the Phone for current meeting cost, waste costs, and people in meeting
        let prefs:NSUserDefaults = NSUserDefaults(suiteName: "a.b.c")!

        let status = statusButton.description

        if WCSession.isSupported() {
            let session = WCSession.defaultSession()
            if session.reachable {
            let message = ["status":status]
            session.sendMessage(message, replyHandler: { ( reply: [String: AnyObject]) -> Void in
            print("Reply: \(reply)")
            }, errorHandler: { (error: NSError) -> Void in
            print("ERROR Watch: \(error.localizedDescription)")
            })
        } else { // reachable
            self.showReachabilityError()
            }
        }

        print("Watch Status Button Pressed - Status \(statusButton)")
    }

    func session(session: WCSession, didReceiveApplicationContext applicationContext: [String : AnyObject]){

        let prefs:NSUserDefaults = NSUserDefaults(suiteName: "a.b.c")!

        if let waste = applicationContext["waste"] as? Float {
            print("Watch Receive - Waste \(waste)")
        }

        if let cost = applicationContext["cost"] as? Float {
            print("Watch Receive - Cost \(cost)")
        }

        if let counternum = applicationContext["counter"] as? Float {
            print("Watch Receive - Counter \(counternum)")
        }

        if let status = applicationContext["status"] as? String {
            print("Watch Receive - Status \(status)")
            statusButton.setTitle(status)
        }

    }

    private func showReachabilityError() {
            let tryAgain = WKAlertAction(title: "Try Again", style: .Default, handler: { () -> Void in })
            let cancel = WKAlertAction(title: "Cancel", style: .Cancel, handler: { () -> Void in })
            self.presentAlertControllerWithTitle("Your iPhone is not reachable.", message: "You cannot adjust the status or number of attendees Watch is not currently connected to your iPhone. Please ensure your iPhone is on and within range of your Watch.", preferredStyle: WKAlertControllerStyle.Alert, actions:[tryAgain, cancel])
    }

    func session(session: WCSession, didFinishUserInfoTransfer userInfoTransfer: WCSessionUserInfoTransfer, error: NSError?) {

        print("Transfer User Info Error watch: \(error)")
    }

}

我在手表上看到消息，并在调试日志中看到它们。。。但他们似乎没有在电话里开火。手机正在成功地向手表发送信息

我已经在模拟器、手表和iPhone上测试了这段代码。请注意，从iPhone到手表的消息是使用via updateApplicationContext完成的，而我正试图使用send message将消息从手表发送到iPhone。以下是用于发送上下文的iPhone代码示例：

        if WCSession.isSupported() {
        if session.watchAppInstalled {
            let UserInfo = ["waste":Float((wastedAmount.text! as NSString).floatValue), "cost":Float((totalAmount.text! as NSString).floatValue), "counter":Float((peopleInMeeting.text! as NSString).floatValue), "status":"Start"]
            do {
                try session.updateApplicationContext(UserInfo as! [String : AnyObject])
            } catch {
                print("Updating the context failed: ")
            }
        }
    }

---

当你说：

我在手表上看到消息，并在调试日志中看到它们。。。但他们似乎没有在电话里开火。手机正在成功地向手表发送信息

然而，一个常见的情况是iPhone代码实际上工作正常，而您唯一看不到的是打印到控制台的调试语句。这似乎是可能的，因为您说您正在看到预期的监视消息，可能包括来自

print（“Reply:\（Reply）”）

的消息。这表示iPhone正在处理该消息

在这种情况下，您通常只希望同时看到来自Watch和iOS模拟器进程的调试控制台消息，但实际上您只连接到其中一个进程。这里（至少）可以做两件事：

从Xcode运行WatchKit应用程序，然后改为连接到iPhone进程。在Xcode中，转到

Debug>attachtoprocess…

并在“可能的目标”下选择iPhone应用程序

首先运行iPhone应用程序，这意味着您已经连接到该进程。在Apple Watch模拟器中，运行Watch应用程序。然后，您将能够调试通信的iPhone端

---

在运行iPhone应用程序时在Watch OS中进行调试，在Xcode-8.1中反之亦然。需要附加所需的运行进程

视觉上：-

---

向

Double

的演员阵容成功了吗？计数器听起来像是一个

Int

？对Double的转换成功了。在监视端，您是否实现了

func会话（会话：WCSession，didFinishUserInfoTransfer:WCSessionUserInfoTransfer，错误：NSError？

？它是否接收到任何带有错误的回调？我还没有实现，现在将这样做，看看它是否提供了额外的细节。。请参阅代码：if WCSession.isSupported（）{let session=WCSession.defaultSession（）if session.reachable{let message=[“减号”：“1”]session.sendMessage（message，replyHandler:{（reply:[String:AnyObject]）->打印无效（“reply:（reply）”）}，errorHandler:{（error:NSError）->打印时无效（“错误监视：（error.localizedDescription）”）}其他{//reachable self.showReachabilityError（）}

        if WCSession.isSupported() {
        if session.watchAppInstalled {
            let UserInfo = ["waste":Float((wastedAmount.text! as NSString).floatValue), "cost":Float((totalAmount.text! as NSString).floatValue), "counter":Float((peopleInMeeting.text! as NSString).floatValue), "status":"Start"]
            do {
                try session.updateApplicationContext(UserInfo as! [String : AnyObject])
            } catch {
                print("Updating the context failed: ")
            }
        }
    }