Swift分段选择控件（UISegmentedControl）的用法

import UIKit

class ViewController: UIViewController        ,UITextFieldDelegate,UITextViewDelegate,UIActionSheet  Delegate,UIAlertViewDelegate{
override func viewDidLoad() {
    super.viewDidLoad()



let items = ["选项一","选项二",UIImage(named: "lalala")!] as [AnyObject]
    
    let segmented = UISegmentedControl (items: items)
    
    segmented.frame = CGRectMake(10, 270, 200, 30)
    
    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

    //添加选项
    segmented.insertSegmentWithTitle("新加项目", atIndex: 1, animated: true)
    //添加选项图片
    segmented.insertSegmentWithImage(UIImage(named: "lalala"), atIndex: 2, animated: true)
    
    //移除选项
    segmented.removeSegmentAtIndex(1, animated: true)
    
    
    segmented.tintColor = UIColor.redColor()
    //修改选项文字
    segmented.setTitle("swift", forSegmentAtIndex: 1)
    segmented.setTitle("学习", forSegmentAtIndex: 1)
  
    segmented.setImage(UIImage(named: "111"), forSegmentAtIndex: 3)
    //修改选项便宜位置
    segmented.setContentOffset(CGSizeMake(10, 7), forSegmentAtIndex: 0)
    self.view.addSubview(segmented)


  }


func segmentDidchange(segmented:UISegmentedControl){
    //获取选项的索引
    print(segmented.selectedSegmentIndex)
    
    //获取选项的文字
    print(segmented.titleForSegmentAtIndex(segmented.selectedSegmentIndex))

 }

}