因?yàn)槲业捻?xiàng)目用的是storyboard布局的，新建一個(gè)類BaseNavigationController繼承UINavigationController，然后重寫- (void)pushViewController:(UIViewController*)viewController animated:(BOOL)animated這個(gè)方法；

代碼：

- (void)pushViewController:(UIViewController*)viewController animated:(BOOL)animated {

[superpushViewController:viewControlleranimated:animated];

//改tabBar的frame 在iPhoneX上push上移的問(wèn)題

CGRectframe =self.tabBarController.tabBar.frame;

frame.origin.y= [UIScreenmainScreen].bounds.size.height- frame.size.height;

self.tabBarController.tabBar.frame= frame;

}

然后在storyboard里面，控制器的navigationController繼承與這個(gè)類BaseNavigationController；