navigation

个人中心页面 没有navigationBar，push到下一页面时，navigationBar出现，返回时候，navigationBar隐藏；

1. 设置代理

@interfae  PersonaInfoVC () <UINavigationControllerDelegate>

self.navigationController.delegate = self;

2. 实现代理方法

- (void)navigationController:(UINavigationController *)navigationController willShowViewController:(UIViewController *)viewController animated:(BOOL)animated
{
    BOOL isMyInfoVC = [viewController isKindOfClass:[**PersonaInfoVC**class]];
    [self.navigationController setNavigationBarHidden:isMyInfoVC animated:YES];
}

navigationBar消失.png 设置之后.png