import WatchKit import Foundation import WatchConnectivity import CoreMotion class InterfaceController: WKInterfaceController, WCSessionDelegate { @IBOutlet var StartBtn: WKInterfaceButton! @IBOutlet var StopBtn: WKInterfaceButton! @IBAction func pushStartBtn() { StartBtn.setHidden(true) StopBtn.setHidden(false) print("start") // randNum = String(arc4random_uniform(10000000)) sendMessage() } @IBAc