Question

我使用手表连接框架将数据从iphone发送到Apple watch，反之亦然。有没有办法计算数据传输时间？

import UIKit
import WatchConnectivity
class ViewController: UIViewController, WCSessionDelegate{

//Communication session

let session = WCSession.defaultSession()
var phoneCounter = 0

@IBOutlet weak var labelcounter: UILabel!
override func viewDidLoad() {
    super.viewDidLoad()
    initWCSession()
    // Do any additional setup after loading the view, typically from a nib.
}



 func initWCSession(){
    session.delegate = self
    session.activateSession()
}

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


    let msg = message["CounterValueFromWatch"]as! Int
      labelcounter.text = "Counter: \(msg)"
   }


  @IBAction func sendData(sender: AnyObject) {
    //Send data to apple watch

    let msg = ["CounterValueFromiphone" : phoneCounter++]
  session.sendMessage(msg, replyHandler: {(replay) -> Void in
}) {(error) -> Void in
    }
}
}

Answer 1

您可以测量往返次数：

let msg = ["CounterValueFromiphone" : phoneCounter++]
let start = NSDate()
session.sendMessage(msg, replyHandler: {(replay) -> Void in
   let end = NSDate()
   let timeInterval: Double = end.timeIntervalSinceDate(start)
   // display timeInterval in main queue
}) {(error) -> Void in
   let end = NSDate()
   let timeInterval: Double = end.timeIntervalSinceDate(start)
   // display timeInterval in main queue
}

我不相信你可以比较在iPhone上测量的NSDate（）和手表上的NSDate（），并依靠差异。

从ios到watchOS的数据传输速率（发送或接收数据所需的时间）

1 个答案: