UISegmentedControl 使用详解:

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

//初始化UISegmentedControl  

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

segmentedControl.frame = CGRectMake(20.0, 20.0, 250.0, 50.0);  

segmentedControl.selectedSegmentIndex = 2;//设置默认选择项索引  

segmentedControl.tintColor = [UIColor redColor];  

self.navigationItem.titleView = segmentedArray;

//有基本四种样式

segmentedControl.segmentedControlStyle = UISegmentedControlStylePlain;//设置样式

//segmentedControl.segmentedControlStyle = UISegmentedControlStyleBordered;//设置样式

//segmentedControl.segmentedControlStyle = UISegmentedControlStyleBar;//设置样式

//segmentedControl.segmentedControlStyle = UISegmentedControlStyleBezeled;//设置样式