问如何以编程方式将UISegmentedControl添加到容器视图

EN

UIScrollView *scroll = [[UIScrollView alloc] initWithFrame:CGRectMake(0, 0, 320, 435)];
scroll.contentSize = CGSizeMake(320, 700);
scroll.showsHorizontalScrollIndicator = YES;

NSArray *itemArray = [NSArray arrayWithObjects: @"One", @"Two", @"Three", nil];
UISegmentedControl *segmentedControl = [[UISegmentedControl alloc] initWithItems:itemArray];
segmentedControl.frame = CGRectMake(35, 200, 250, 50);
segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;
[segmentedControl addTarget:self action:@selector(MySegmentControlAction:) forControlEvents: UIControlEventValueChanged];
segmentedControl.selectedSegmentIndex = 1;     
[scroll addSubview:segmentedControl];
[segmentedControl release]; 
[self.view addSubview:scroll];

- (void)MySegmentControlAction:(UISegmentedControl *)segment 
{    
    if(segment.selectedSegmentIndex == 0)
    {
        // code for the first button
    } 
}

import UIKit

class ViewController: UIViewController {

  /**
    Loads the view and in our case we override default loadView to provide
    custom SegmentedControl.
  */
  override func loadView() {
      super.loadView()
      self.view.backgroundColor = UIColor.purpleColor()

      println("Main view's loadView() called.")

      // Initialize
      let items = ["Purple", "Green", "Blue"]
      let customSC = UISegmentedControl(items: items)
      customSC.selectedSegmentIndex = 0

      // Set up Frame and SegmentedControl
      let frame = UIScreen.mainScreen().bounds
      customSC.frame = CGRectMake(frame.minX + 10, frame.minY + 50,
                                  frame.width - 20, frame.height*0.1)

      // Style the Segmented Control
      customSC.layer.cornerRadius = 5.0  // Don't let background bleed
      customSC.backgroundColor = UIColor.blackColor()
      customSC.tintColor = UIColor.whiteColor()

      // Add target action method
      customSC.addTarget(self, action: "changeColor:", forControlEvents: .ValueChanged)

      // Add this custom Segmented Control to our view
      self.view.addSubview(customSC)
  }

  /**
    Handler for when custom Segmented Control changes and will change the
    background color of the view depending on the selection.
   */
  func changeColor(sender: UISegmentedControl) {
      println("Change color handler is called.")
      print("Changing Color to ")
      switch sender.selectedSegmentIndex {
      case 1:
          self.view.backgroundColor = UIColor.greenColor()
          println("Green")
      case 2:
          self.view.backgroundColor = UIColor.blueColor()
          println("Blue")
      default:
          self.view.backgroundColor = UIColor.purpleColor()
          println("Purple")
      }
  }

  override func viewDidLoad() {
      super.viewDidLoad()
      // Do any additional setup after loading the view, typically from a nib.
  }

  override func didReceiveMemoryWarning() {
      super.didReceiveMemoryWarning()
      // Dispose of any resources that can be recreated.
  }
}

UISegmentedControl *segmentControl = [[UISegmentedControl alloc]initWithItems:@[@"One",@"Two"]];

[segmentControl setSegmentedControlStyle:UISegmentedControlStyleBar];
segmentControl.frame = CGRectMake(10, 50, 300, 30);
[segmentControl addTarget:self action:@selector(segmentedControlValueDidChange:) forControlEvents:UIControlEventValueChanged];
[segmentControl setSelectedSegmentIndex:0];
[scrollView addSubview:segmentControl];
[segmentControl release];

-(void)segmentedControlValueDidChange:(UISegmentedControl *)segment
{
switch (segment.selectedSegmentIndex) {
    case 0:{
        //action for the first button (Current)
        break;}
    case 1:{
        //action for the first button (Current)
        break;}
    }
}