swift - 单击任意按钮即可启动计时器

Question

var nsTimer = NSTimer()

override func viewDidLoad() {

    super.viewDidLoad()



    // Do any additional setup after loading the view.
}

override func viewDidDisappear(animated: Bool) {
    self.nsTimer.invalidate()
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
     nsTimer = NSTimer.scheduledTimerWithTimeInterval(0.01, target: self, selector: Selector("updatetime"), userInfo: nil, repeats: true);
}

func updateTime() {
    counter = counter + 0.1
    timer.text = String(format: "%.1f", counter) + "s"
}

有人知道吗？当我单击任何按钮计时器启动时，当我单击另一个按钮计时器包含

Answer 1

您必须创建一个 IBAction 并将所有按钮链接到它。

@IBAction func buttonTapped(sender: AnyObject) {
//this will check if your timer is running if not the start the timer, if the timer is already running do nothing and keep timer running 
 if !nsTimer.Enabled {
   nsTimer.Start()
   } 
 }

确保将所有按钮连接到此方法并从 TouchBegan 中删除代码