6_StopWatch

6

//
//  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.
    }

}

项目：6_StopWatch