（iOS开发）刷新View的方法

[self viewWillDisappear:YES];    [self viewDidAppear:YES];-(void)viewWillDisappear:(BOOL)animated{    [super viewWillDisappear:animated];    while ([self.view.subviews lastObject] != nil)    {        [(UIView*)[self.view.subviews lastObject] removeFromSuperview];    }}-(void)viewDidAppear:(BOOL)animated{    [super viewDidAppear:animated];    [self uiconfig];}