UIButton 风格

typedef NS_ENUM(NSInteger, UIButtonType) {

    UIButtonTypeCustom = 0,                         // no button type

    UIButtonTypeSystem NS_ENUM_AVAILABLE_IOS(7_0),  // standard system button

    UIButtonTypeDetailDisclosure,

    UIButtonTypeInfoLight,

    UIButtonTypeInfoDark,

    UIButtonTypeContactAdd,

    UIButtonTypeRoundedRect = UIButtonTypeSystem,   // Deprecated, use UIButtonTypeSystem instead

};

简单操作

    UIButton *button = [UIButton buttonWithType:UIButtonTypeSystem];

    button.tag = 100; // 给 Button 加入标记 在不同的方法中使用同一个控件

    button.frame = CGRectMake(30, 170, 200, 40);

    [self.window addSubview:button];

    // 设置按钮文字。须要设置状态

    [button setTitle:@"按钮" forState:UIControlStateNormal];

//    [button setTitle:@"Hello" forState:UIControlStateHighlighted];

    [button setTitleColor:[UIColor blueColor] forState:UIControlStateNormal]; // 给字体设置颜色    

    button.showsTouchWhenHighlighted = YES; // 高亮

    // 给button绑定事件

    [button addTarget:self // 接受消息的对象

               action:@selector(buttonAction:) // 发送的消息

     forControlEvents:UIControlEventTouchUpInside]; // 触发的方式

Button 方法

- (void) buttonAction

{

    NSLog(@"咔");

    // 通过 tag 。从父类视图中获取button

    UIButton *btn = (UIButton *)[self.window viewWithTag:100];

    [btn setTitle:@"点我" forState:UIControlStateNormal];

    // 让 Button 失效

    [btn removeTarget:self action:@selector(buttonAction) forControlEvents:UIControlEventTouchUpInside];

}

- (void) buttonAction:(UIButton *)sender

{

    sender.backgroundColor = [UIColor redColor];

}