- (void)addSubview:(UIView *)view;
添加⼀个子控件view
- (void)removeFromSuperview;
从父控件中移除
- (UIView *)viewWithTag:(NSInteger)tag;
根据一个tag标识找出对应的控件(一般都是⼦子控件)

- (void)addSubview:(UIView *)view;
添加⼀个子控件view
- (void)removeFromSuperview;
从父控件中移除
- (UIView *)viewWithTag:(NSInteger)tag;
根据一个tag标识找出对应的控件(一般都是⼦子控件)