uisegmentedcontrol

NSArray *segmentArray = @[                               @"1",                               @"2",                               @"3",                               @"4"                               ];     
// 初始化UISegmentedControl     
UISegmentedControl *segmentControl = [[UISegmentedControl alloc] initWithItems:segmentArray];     
segmentControl.frame = CGRectMake(0, 0, self.view.frame.size.width - 20, 30);     
segmentControl.center = self.view.center;     
// 设置默认选择项索引     
segmentControl.selectedSegmentIndex = 2;     
segmentControl.tintColor = [UIColor redColor];     
// 设置在点击后是否恢复原样     
segmentControl.momentary = YES;
[self.view addSubview:segmentControl];