didMoveToSuperview

转载自:http://www.cnblogs.com/jay-dong/archive/2012/06/13/2547489.html

代码：

- (void)didMoveToSuperview

{

    if (!_navigationBar)

    {

        self.navigationBar = (UINavigationBar *)self.superview;

    }

}

 //当加入视图完成后调用
 (void)didAddSubview:(UIView *)subview
 //当视图移动完成后调用
 (void)didMoveToSuperview
 //当视图移动到新的WINDOW后调用
 (void)didMoveToWindow
 //在删除视图之后调用
 (void)willRemoveSubview:(UIView *)subview
 //当移动视图之前调用
 (void)didMoveToSuperview:(UIView *)subview
 //当视图移动到WINDOW之前调用
 (void)didMoveToWindow