swift学习之路——uitabbar

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class ViewController: UIViewController,UITabBarDelegate {        override func viewDidLoad() {        super.viewDidLoad()        // Do any additional setup after loading the view, typically from a nib.                var tabbar = UITabBar(frame: CGRectMake(0, self.view.bounds.height-55, self.view.bounds.width, 55))                var tabbaritema = UITabBarItem(title: "a", image: nil, tag: 1)        var tabbaritemb = UITabBarItem(title: "b", image: nil, tag: 2)        var tabbaritemc = UITabBarItem(title: "c", image: nil, tag: 3)        var tabbaritemd = UITabBarItem(title: "d", image: nil, tag: 4)        var tabbariteme = UITabBarItem(title: "e", image: nil, tag: 5)                var items = NSArray(objects:tabbaritema,tabbaritemb,tabbaritemc,tabbaritemd,tabbariteme)                tabbar.items = items                tabbar.delegate = self        tabbar.selectedItem = tabbaritemd                tabbar.tintColor = UIColor.purpleColor()        tabbar.barTintColor = UIColor.orangeColor()                tabbar.itemPositioning = UITabBarItemPositioning.Centered        self.view.addSubview(tabbar)                    }    func tabBar(tabBar: UITabBar, didSelectItem item: UITabBarItem!){                <p class="p1"><span class="s1">  </span><span class="s2">if</span><span class="s1"> (item.</span><span class="s3">tag</span><span class="s1"> == </span><span class="s4">1</span><span class="s1">){</span></p><p class="p2"><span class="s1">            </span></p><p class="p2"><span class="s1">       </span></p><p class="p1"><span class="s1">            </span><span class="s5">println</span><span class="s1">(</span><span class="s6">"kok"</span><span class="s1">)</span></p><p class="p2"><span class="s1">       </span></p><p class="p2"><span class="s1">            </span></p><p class="p1"><span class="s1">        }</span><span class="s2">else</span><span class="s1">{</span></p><p class="p2"><span class="s1">            </span></p><p class="p2"><span class="s1">        </span></p><p class="p1"><span class="s1">            </span><span class="s5">println</span><span class="s1">(</span><span class="s6">"</span><span class="s1">\(item)</span><span class="s6">"</span><span class="s1">)</span></p><p class="p2"><span class="s1">            </span></p><p class="p1"><span class="s1">        }</span></p>            }
通过item 的tag值区分 item
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