UISegmentedControl类似于UIButton,它可以提供多个选择操作,响应事件,但具有很大的局限性,我们更多的是使用自定义的,不过在这里还是介绍下它的基本用法

NSArray *segmentedArray = [[NSArrayalloc]initWithObjects:@"1",@"2",@"3",@"4",nil];

//初始化UISegmentedControl

UISegmentedControl *segmentedControl = [[UISegmentedControlalloc]initWithItems:segmentedArray];

segmentedControl.frame = CGRectMake(20.0,……)

// 设置默认选择项索引

segmentedControl.selectedSegmentIndex = 2;

segmentedControl.tintColor = [UIColor redColor];

// 有基本四种样式   ios 7  之后不用了

segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;

segmentedControl.segmentedControlStyle = UISegmentedControlStyleBordered;

segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;

segmentedControl.segmentedControlStyle = UISegmentedControlStyleBezeled;

// 设置在点击后是否恢复原样

segmentedControl.momentary = YES;

[segmentedControl setTitle:@"two" forSegmentAtIndex:1];//设置指定索引的题目

[segmentedControl setImage:[UIImage imageNamed:@"btn_jyy.png"] forSegmentAtIndex:3];//设置指定索引的图片

// 在指定索引插入一个选项并设置图片

[segmentedControl insertSegmentWithImage:[UIImage imageNamed:@"mei.png"] atIndex:2 animated:NO];

// 在指定索引插入一个选项并设置题目

[segmentedControl insertSegmentWithTitle:@"insert" atIndex:3 animated:NO];

// 移除指定索引的选项

[segmentedControl removeSegmentAtIndex:0 animated:NO];

// 设置指定索引选项的宽度

[segmentedControl setWidth:70.0 forSegmentAtIndex:2];

// 设置选项中图片等的左上角的位置

[segmentedControl setContentOffset:CGSizeMake(10.0,10.0) forSegmentAtIndex:4];

//获取指定索引选项的图片imageForSegmentAtIndex：

UIImageView *imageForSegmentAtIndex = [[UIImageViewalloc]initWithImage:[segmentedControl imageForSegmentAtIndex:1]];

imageForSegmentAtIndex.frame = CGRectMake(60.0, 120.0, 30.0, 30.0);  ;

//获取指定索引选项的标题titleForSegmentAtIndex

UILabel *titleForSegmentAtIndex = [[UILabel alloc]initWithFrame:CGRectMake(100.0, 160.0, 30.0, 30.0)];

titleForSegmentAtIndex.text = [segmentedControl titleForSegmentAtIndex:0];

//获取总选项数segmentedControl.numberOfSegments

UILabel *numberOfSegments = [[UILabel alloc]initWithFrame:CGRectMake(140.0, 170.0, 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, 210.0, 70.0, 30.0)];

widthForSegmentAtIndex.text = [NSString stringWithFormat:@"%f",[segmentedControl widthForSegmentAtIndex:2]];

// [segmentedControl setEnabled:NO forSegmentAtIndex:4];//设置指定索引选项不可选

// BOOL enableFlag = [segmentedControl isEnabledForSegmentAtIndex:4];//判断指定索引选项是否可选

[mySegmentedControladdTarget:selfaction:@selector(didClicksegmentedControlAction:)forControlEvents:UIControlEventValueChanged];

-(void)didClicksegmentedControlAction:(UISegmentedControl *)Seg{

NSInteger Index = Seg.selectedSegmentIndex;

......}