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;}