swift:motionEnded不触发或实际设备

我在模拟器上运行我的骰子摇动应用程序。它确实触发了 motionEnded 做摇动手势。 不过,在真正的iphone 6上运行最新ios版本的示例源代码并没有帮助。 我从 this answer ,但由于我不知道objective-c语法,所以无法将所有行完全转换为swift。

以下是我的一些代码:

appdelegate.swift批准

func applicationDidFinishLaunching(_ application: UIApplication) {
    application.applicationSupportsShakeToEdit = true

}

/ / //viewcontroller.swift视图控制器 // / / /由Eve于19年2月23日创建。 /版权所有©2019 hypersaz。版权所有。 / /

视图控制器.swift

import UIKit

class ViewController: UIViewController {
    var randomDiceIndex1:Int = 0
    var randomDiceIndex2:Int = 0
    let diceArray = ["dice1","dice2","dice3","dice4","dice5","dice6"]

    @IBOutlet weak var diceImageView1: UIImageView!
    @IBOutlet weak var diceImageView2: UIImageView!



    override func viewDidLoad() {
        super.viewDidLoad()
        // Do any additional setup after loading the view, typically from a nib.
        updateDiceImages()
    }
    @IBAction func rollButtonPressed(_ sender: UIButton) {
         // A Block of Code
        updateDiceImages()

    }
    func updateDiceImages(){
        randomDiceIndex1 = Int.random(in: 0 ... 5)
        randomDiceIndex2 = Int.random(in: 0 ... 5)
        print(randomDiceIndex1)
        diceImageView1.image = UIImage(named: diceArray[randomDiceIndex1])
        diceImageView2.image = UIImage(named: diceArray[randomDiceIndex2])

    }
    override func motionEnded(_ motion: UIEvent.EventSubtype, with event: UIEvent?) {
            updateDiceImages()
    }

    override var canBecomeFirstResponder: Bool{
        return true
    }
    override func viewDidAppear(_ animated: Bool) {
        super.viewDidAppear(animated)
        becomeFirstResponder()
    }

}