UISegmentedControl的使用

 #import "SegmentedControlTestViewController.h"
     @implementation SegmentedControlTestViewController
     @synthesize segmentedControl;  

     - (void)viewDidLoad {
         NSArray *segmentedArray = [[NSArray alloc]initWithObjects:@"",@"",@"",@"",nil];
         //初始化UISegmentedControl
         UISegmentedControl *segmentedTemp = [[UISegmentedControl alloc]initWithItems:segmentedArray];
         segmentedControl = segmentedTemp;
         segmentedControl.frame = CGRectMake(60.0, 10.0, 200.0, 50.0);  

         [segmentedControl setTitle:@"two" forSegmentAtIndex:];//设置指定索引的题目
         [segmentedControl setImage:[UIImage imageNamed:@"lan.png"] forSegmentAtIndex:];//设置指定索引的图片
         [segmentedControl insertSegmentWithImage:[UIImage imageNamed:@"mei.png"] atIndex: animated:NO];//在指定索引插入一个选项并设置图片
         [segmentedControl insertSegmentWithTitle:@"insert" atIndex: animated:NO];//在指定索引插入一个选项并设置题目
         [segmentedControl removeSegmentAtIndex: animated:NO];//移除指定索引的选项
         [segmentedControl setWidth:70.0 forSegmentAtIndex:];//设置指定索引选项的宽度
         [segmentedControl setContentOffset:CGSizeMake(10.0,10.0) forSegmentAtIndex:];//设置选项中图片等的左上角的位置  

         //获取指定索引选项的图片imageForSegmentAtIndex：
         UIImageView *imageForSegmentAtIndex = [[UIImageView alloc]initWithImage:[segmentedControl imageForSegmentAtIndex:]];
         imageForSegmentAtIndex.frame = CGRectMake(60.0, 100.0, 30.0, 30.0);  

         //获取指定索引选项的标题titleForSegmentAtIndex
         UILabel *titleForSegmentAtIndex = [[UILabel alloc]initWithFrame:CGRectMake(100.0, 100.0, 30.0, 30.0)];
         titleForSegmentAtIndex.text = [segmentedControl titleForSegmentAtIndex:];  

         //获取总选项数segmentedControl.numberOfSegments
         UILabel *numberOfSegments = [[UILabel alloc]initWithFrame:CGRectMake(140.0, 100.0, 30.0, 30.0)];
         numberOfSegments.text = [NSString stringWithFormat:@"%d",segmentedControl.numberOfSegments];  

         //获取指定索引选项的宽度widthForSegmentAtIndex：
         UILabel *widthForSegmentAtIndex = [[UILabel alloc]initWithFrame:CGRectMake(180.0, 100.0, 70.0, 30.0)];
         widthForSegmentAtIndex.text = [NSString stringWithFormat:@"%f",[segmentedControl widthForSegmentAtIndex:]];  

         segmentedControl.selectedSegmentIndex = ;//设置默认选择项索引
         segmentedControl.tintColor = [UIColor redColor];
         segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;//设置样式
         segmentedControl.momentary = YES;//设置在点击后是否恢复原样  

         [segmentedControl setEnabled:NO forSegmentAtIndex:];//设置指定索引选项不可选
         BOOL enableFlag = [segmentedControl isEnabledForSegmentAtIndex:];//判断指定索引选项是否可选
         NSLog(@"%d",enableFlag);  

         [self.view addSubview:widthForSegmentAtIndex];
         [self.view addSubview:numberOfSegments];
         [self.view addSubview:titleForSegmentAtIndex];
         [self.view addSubview:imageForSegmentAtIndex];
         [self.view addSubview:segmentedControl];  

         [widthForSegmentAtIndex release];
         [numberOfSegments release];
         [titleForSegmentAtIndex release];
         [segmentedTemp release];
         [imageForSegmentAtIndex release];  

         //移除所有选项
         //[segmentedControl removeAllSegments];
         [super viewDidLoad];
     }  

    @end