iOS 设置主界面隐藏navigationBar,跳转后显示出来

//利用生命周期设置是否隐藏 navigationBar

- (void)viewWillAppear:(BOOL)animated {

    [superviewWillAppear:animated];

    

    [self.navigationControllersetNavigationBarHidden:YESanimated:animated];

}

- (void)viewWillDisappear:(BOOL)animated {

    [superviewWillDisappear:animated];

    

    [self.navigationControllersetNavigationBarHidden:NOanimated:animated];

}