// // ViewController.swift // mylearn // // Created by liuxing on 16/1/17. // Copyright (c) 2016年 myhaspl. All rights reserved. // import Cocoa class ViewController: NSViewController { var nowvalue:Bool=true override func viewDidLoad() { super.viewDidLoad() // Do any additional setup after loading the view. } override var representedObject: AnyObject? { didSet { // Update the view, if already loaded. } } @IBOutlet weak var helloButton: NSButton! @IBAction func showHello(sender: AnyObject) { if nowvalue { self.helloButton.title="您好,世界" nowvalue=false } else{ self.helloButton.title="hello,world" nowvalue=true } } }
反复按下hello,world按钮,将轮流显示中英文