Swift - 分段选择控件（UISegmentedControl）的用法

2

3

4

5

6

7

8

9

10

11

12

13

14

15

16

17

18

19

20

21

class ViewController: UIViewController {

    override func viewDidLoad() {

        super.viewDidLoad()

        //选项除了文字还可以是图片

        var items=["选项一","选项二",UIImage(named:"star")] as [AnyObject]

        var segmented=UISegmentedControl(items:items)

        segmented.center=self.view.center

        segmented.selectedSegmentIndex=1 //默认选中第二项      

        segmented.addTarget(self, action: "segmentDidchange:",

        forControlEvents: UIControlEvents.ValueChanged)  //添加值改变监听 

        self.view.addSubview(segmented)

    }

    func segmentDidchange(segmented:UISegmentedControl){

        //获得选项的索引

        println(segmented.selectedSegmentIndex)

        //获得选择的文字

        println(segmented.titleForSegmentAtIndex(segmented.selectedSegmentIndex))

    }

}

2

3

4

5

6

//添加文字选项

segmented.insertSegmentWithTitle("新增选项",atIndex:1,animated:true);

//添加图片选项

segmented.insertSegmentWithImage(UIImage(named:"icon")!,atIndex:1,animated: true)

//移除选项

segmented.removeSegmentAtIndex(1,animated:true);

segmented.tintColor=UIColor.redColor()

segmented.setTitle("swfit",forSegmentAtIndex:1)

segmented.setImage(UIImage(named:"icon"),forSegmentAtIndex:2)

segmented.setContentOffset(CGSizeMake(10,7),forSegmentAtIndex:1)