从iPhone发送和接收消息以从多个控制器观看

时间:2016-12-31 17:56:02

标签: ios swift watch-os watchconnectivity

处理从多个控制器发送和接收的通信的正确方法是什么?

我要做的是从iOS中的两个不同的viewControllers向WatchOS中的两个不同的interfaceControllers发送消息(另外,不是在同一时间)。

以下是我只能用于ViewController2和InterfaceController2之间通信的内容,当从ViewController1向InterfaceController1发送消息时,它会崩溃,因为它似乎始终从InterfaceController2定位EnvironmentVariableTarget.User方法。

ViewController 1:

session

InterfaceController 1:从ViewController 1接收消息

class ViewController1: UIViewController,WCSessionDelegate{
    var session: WCSession!
    override func viewDidLoad() {
      super.viewDidLoad()
        if WCSession.isSupported() {
          session = WCSession.default()
          session.delegate = self
          session.activate()
        }
     }

      func sendDataToWatch(){
        let sendPrice:[String: Double] = ["price": 3.99]
        session.sendMessage(sendPrice, replyHandler: { replyMessage in
            // Some reply here, this could be nil
        }, errorHandler: {error in
            // Catch any errors here, this could be nil
            print("Error: \(error.localizedDescription)")
        })
     }
}

// ===========================================

ViewController 2:

class InterfaceController1: WKInterfaceController, WCSessionDelegate{
   var session: WCSession!

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

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

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

    /// Capture data from ViewContorller 2
    let priceFromPhone = message["price"] as? String

    // do something with priceFromPhone
   } 
}

InterfaceController 2:从ViewController 2接收消息

class ViewController2: UIViewController,WCSessionDelegate{
    var session: WCSession!
    override func viewDidLoad() {
      super.viewDidLoad()
        if WCSession.isSupported() {
          session = WCSession.default()
          session.delegate = self
          session.activate()
        }
     }

   func sendDataToWatch(){
    let sendEngine:[String: Double] = ["engine": 2.5]
    session.sendMessage(sendEngine, replyHandler: { replyMessage in
        // Some reply here, this could be nil
    }, errorHandler: {error in
        // Catch any errors here, this could be nil
        print("Error: \(error.localizedDescription)")
    })
  }
}

由于

2 个答案:

答案 0 :(得分:2)

我建议从处理用户界面的控制器中删除所有数据管理。这是一个糟糕的设计,可能会让你头疼,以便混合像这样的层。

您应该拥有一个WCSession委托的数据管理器,负责保存信息,然后通知相关方(查看控制器等)备份数据已更新。

答案 1 :(得分:0)

根据我所读到的内容,看起来我需要将通信范围缩小到只有一个ViewController和一个InterfaceController,然后通过NSNotificationDelegation分享更改。

WatchConnectivity how to share session among multiple WKInterfaceControllers?

Using WCSession with more than one ViewController