隐藏导航栏页面和不隐藏页面视差处理

在需要隐藏导航栏的页面添加代码

-(void)viewWillAppear:(BOOL)animated{

    [super viewWillAppear:YES];

    [self.navigationController setNavigationBarHidden:YES animated:YES];

}

-(void)viewWillDisappear:(BOOL)animated{

    [super viewWillDisappear:animated];

[self.navigationController setNavigationBarHidden:NO animated:YES];

}