6_StopWatch
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// // ViewController.swift // StopWatch // // Created by ZC on 16/1/9. // Copyright © 2016年 ZC. All rights reserved. // import UIKit class ViewController: UIViewController { var timer = NSTimer() var time = 0 func increaseTimer() { time++ timeLabel.text = String(time) } @IBOutlet weak var timeLabel: UILabel! @IBAction func play(sender: AnyObject) { timer = NSTimer.scheduledTimerWithTimeInterval(1, target: self, selector: Selector("increaseTimer"), userInfo: nil, repeats: true) } @IBAction func pause(sender: AnyObject) { timer.invalidate() } @IBAction func stop(sender: AnyObject) { timer.invalidate() time = 0 timeLabel.text = "0" } override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view, typically from a nib. } override func didReceiveMemoryWarning() { super.didReceiveMemoryWarning() // Dispose of any resources that can be recreated. } }
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