//将子控件view插入到subviews数组的index位置
-(void)insertSubview:(UIView *)view atIndex:(NSInteger)index;

//将子控件view显示到子控件siblingSubview的下面
-(void)insertSubview:(UIView *)view belowSubview:(UIView *)siblingSubview;
//将子控件view显示到子控件siblingSubview的上面
-(void)insertSubview:(UIView *)view aboveSubview:(UIView *)siblingSubview;

//将子控件view放到数组的最后面，显示在最上面
-(void)bringSubviewToFront:(UIView *)view;
//将子控件view放到数组的最前面，显示在最下面
-(void)sendSubviewToBack:(UIView *)view;