UIButton

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    [self creatUIRectButton];
    [self creatImageButton];

    UIButton *button = [[UIButton alloc] initWithFrame:CGRectMake(280, 50, 80, 30)];
    button.backgroundColor = [UIColor blueColor];
    [button setTitle:@"普通按钮" forState:UIControlStateNormal];
    [self.view addSubview:button];
}


- (void)creatUIRectButton {

    //创建一个普通显示文字的圆角按钮
    UIButton *button = [UIButton buttonWithType:UIButtonTypeRoundedRect];
    //设置位置
    button.frame = CGRectMake(100, 100, 80, 40);
    /**
     *  按钮状态
     UIControlStateNormal 正常状态
     UIControlStateHighlighted 高亮状态，按下状态
     UIControlStateSelected 选中状态
     UIControlStateDisabled 失效状态，不可用状态
     */
    //设置文字
    [button setTitle:@"孩纸别动" forState:UIControlStateNormal];//正常状态
    //选中状态
    [button setTitle:@"选中状态" forState:UIControlStateSelected];

    //高亮状态
    [button setTitle:@"按钮按下" forState:UIControlStateHighlighted];
//    button.backgroundColor = [UIColor redColor];


    //添加事件
    /**
     *参数1:实现对象
     *参数2:当按钮满足参数3事件类型的时候调用
     *参数3:事件处理类型函数
     UIControlEventTouchDown 当手指触碰到屏幕时触发事件
     UIControlEventTouchUpInside 手指离开屏幕且手指的位置在按钮范围内触发事件
     UIControlEventTouchUpOutside 手指离开屏幕且手指的位置在按钮范围外触发事件
     *
     */
    [button addTarget:self action:@selector(pressBtn:) forControlEvents:UIControlEventTouchUpInside];
    //设置按钮的文字风格
    //正常状态下的文字
    [button setTitleColor:[UIColor blackColor] forState:UIControlStateNormal];
    [button setTitleColor:[UIColor yellowColor] forState:UIControlStateHighlighted];

    //设置所有状态为同一颜色
    [button setTintColor:[UIColor greenColor]];
    //显示在视图上
    [self.view addSubview:button];

 }

- (void)pressBtn:(UIButton *) sender{
    //更改状态
    sender.selected = YES;
    NSLog(@"你点了我");

}


- (void)creatImageButton {
    //创建一个显示图片的按钮
    UIButton *imgBtn = [UIButton buttonWithType:UIButtonTypeCustom];

    imgBtn.frame = CGRectMake(100, 200, 100, 100);
    //设置不同状态下的
    [imgBtn setImage:[UIImage imageNamed:@"22EA13461A5A8E53825F70A659E23B91.jpg"] forState:UIControlStateNormal];
    [imgBtn setImage:[UIImage imageNamed:@"D9C81341399A18254DDC3F4B118A0697.jpg"] forState:UIControlStateSelected];
    [imgBtn setImage:[UIImage imageNamed:@"86F625D78D4269F539EA3DA7C204E923.jpg"] forState:UIControlStateHighlighted];
    [imgBtn addTarget:self action:@selector(imgButton:) forControlEvents:UIControlEventTouchUpInside];;

    [self.view addSubview:imgBtn];
}

- (void)imgButton:(UIButton *)sender {

    sender.selected = YES;
}