UI控件之Segment

@interface ViewController ()
{
    UISegmentedControl *_segment;
}

@implementation ViewController

- (void)viewDidLoad
{
    [super viewDidLoad];

/*
    //Items是数组，按顺序添加到segment（分段）上
    UISegmentedControl *segment = [[UISegmentedControl alloc] initWithItems:@[ [UIImage imageNamed:@"1.jpg"], @"电话",@"消息"]];
    //默认选择的
    segment.selectedSegmentIndex = 1;
    
    segment.frame = CGRectMake(100.f, 100.f, 200.f, 30.f);
    
    segment.tintColor = [UIColor orangeColor];
    
    [self.view addSubview:segment];
    
    */
    _segment = [[UISegmentedControl alloc] initWithItems:@[@"河科大",@"清华",@"北大"]];
    
    _segment.frame = CGRectMake(100.f, 100.f, 200.f, 30.f);
    //这个atIndex中又容错性，用100也是加到第四个，自己设计的时候，如果加入的索引值大于数组元素个数，酒吧索引值设置为数组长度
    [_segment insertSegmentWithImage:[UIImage imageNamed:@"1.jpg"] atIndex:1 animated:YES];
    
    [_segment removeSegmentAtIndex:1 animated:YES];
    //设置宽度
    
    [_segment setWidth:33.f forSegmentAtIndex:1];
    //设置不能点击
    [_segment setEnabled:NO forSegmentAtIndex:1];
    
    [self.view addSubview:_segment];
    
    
    UIButton *btn = [[UIButton alloc] initWithFrame:CGRectMake(10.f, 20.f, 30.f, 30.f)];
    
    btn.backgroundColor = [UIColor orangeColor];
    [self.view addSubview:btn];
    [btn addTarget:self action:@selector(action) forControlEvents:UIControlEventTouchUpInside];
    UIButton *delBtn = [[UIButton alloc] initWithFrame:CGRectMake(40.f, 20.f, 30.f, 30.f)];
    
    delBtn.backgroundColor = [UIColor purpleColor];
    [delBtn addTarget:self action:@selector(delBtnClick) forControlEvents:UIControlEventTouchUpInside];
    [self.view addSubview:delBtn];
    
}







- (void)action
{
    //点击按钮添加一个段
//    [_segment insertSegmentWithImage:[UIImage imageNamed:@"1.jpg"] atIndex:4 animated:YES];

    [_segment insertSegmentWithTitle:@"北航" atIndex:1 animated:YES];
}

- (void)delBtnClick
{//删除
    [_segment removeSegmentAtIndex:1 animated:YES];
}