Question

ios 的按钮怎么添加点击事件

Answer 1

UIButton类的对象可以通过

- (void)addTarget:(nullable id)target action:(SEL)action forControlEvents:(UIControlEvents)controlEvents

方法添加点击事件。

示例代码：

UIButton* closeButton = [[UIButton alloc]initWithFrame:CGRectMake(My_ScreenW - 30/375.0*My_ScreenW, 15.5/375.0*My_ScreenW, 18/375.0*My_ScreenW, 19/375.0*My_ScreenW)];
    [closeButton addTarget:self action:@selector(closeOnClick:) forControlEvents:UIControlEventTouchUpInside];

Answer 2

[button addTarget:self action:@selector(buttonClick/*方法名*/) forControlEvents:UIControlEventTouchUpInside];