Swift - 分段选择控件UISegmentedControl的用法

1，选择控件的创建，并监听控件选择值

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import UIKit class ViewController : UIViewController { override func viewDidLoad() { super .viewDidLoad() //选项除了文字还可以是图片 let items=[ "选项一" , "选项二" ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas, UIImage (named: "star" )!] as [ AnyObject ] segmented= UISegmentedControl (items:items) segmented.center= self .view.center segmented.selectedSegmentIndex=1 //默认选中第二项 segmented.addTarget( ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,action: "segmentDidchange:" ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas, forControlEvents: UIControlEvents . ValueChanged ) //添加值改变监听 .view.addSubview(segmented) } segmentDidchange(segmented: ){ //获得选项的索引 print (segmented.selectedSegmentIndex) //获得选择的文字 (segmented.titleForSegmentAtIndex(segmented.selectedSegmentIndex)) } }

2，选择控件中选项的添加和删除

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//添加文字选项 segmented.insertSegmentWithTitle( "新增选项" ottom:auto!important; float:none!important; height:auto!important; left:auto!important; line-height:1.5em!important; margin:0px!important; overflow:visible!important; padding:1px 0px!important; position:static!important; right:auto!important; top:auto!important; vertical-align:baseline!important; width:auto!important; font-family:Consolas,atIndex:1,animated: true ); //添加图片选项 segmented.insertSegmentWithImage( "icon" )!,monospace!important; min-height:inherit!important">) //移除选项 segmented.removeSegmentAtIndex(1,monospace!important; min-height:inherit!important">);