iPhone X标签栏和导航栏问题

Question

我从一开始就以编程方式完成了这个完整的应用程序构建。该项目是在一个旧的Xcode上启动的，可能是Xcode 6.我目前正在构建Xcode 6.我的项目有Objective-C和Swift文件相互通信。我遇到的问题是因为它是以编程方式构建的，我不能只是进入故事板并设置使用安全区域布局。

Xcode 9.2上的我的标签栏图像变得疯狂，还有导航栏。我想修复图像以及标签栏的高度。

以下是AppDelegate中用于添加tabbarcontroller的代码。

- (void)setupView {

    UIViewController *firstViewController = [[UIViewController alloc]init];
    firstViewController.view.backgroundColor = UIColor.redColor;
    firstViewController.title = @"First View";
    firstViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemSearch tag:0];
    UINavigationController *firstNavController = [[UINavigationController alloc] initWithRootViewController:firstViewController];

    UIViewController *secondViewController = [[UIViewController alloc]init];
    secondViewController.view.backgroundColor = UIColor.blueColor;
    secondViewController.title = @"Second View";
    secondViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemFavorites tag:1];
    UINavigationController *secondNavController = [[UINavigationController alloc] initWithRootViewController:secondViewController];

    UIViewController *thirdViewController = [[UIViewController alloc]init];
    thirdViewController.view.backgroundColor = UIColor.purpleColor;
    thirdViewController.title = @"Third View";
    thirdViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemRecents tag:2];
    UINavigationController *thirdNavController = [[UINavigationController alloc]initWithRootViewController:thirdViewController];

    UIViewController *fourthViewController = [[UIViewController alloc]init];
    fourthViewController.view.backgroundColor = UIColor.greenColor;
    fourthViewController.title = @"Fourth View";
    fourthViewController.tabBarItem = [[UITabBarItem alloc]initWithTabBarSystemItem:UITabBarSystemItemHistory tag:2];
    UINavigationController *fourthNavController = [[UINavigationController alloc]initWithRootViewController:fourthViewController];

    tabBarController = [[UITabBarController alloc] initWithNibName:nil bundle:nil];
    [tabBarController.tabBar invalidateIntrinsicContentSize];
    tabBarController.viewControllers = [[NSArray alloc] initWithObjects:firstNavController, secondNavController, thirdNavController, fourthNavController, nil];
    tabBarController.delegate = self;
    [tabBarController.view setNeedsLayout];

    self.window.rootViewController = tabBarController;
    [self.window makeKeyAndVisible];
}

我添加了iPhone X启动画面，这使得完整的应用程序可以使用 我已经研究了足够但没有找到解决方案。

Answer 1

您显然错过了这一行[[tabBarController view] setAutoresizingMask:UIViewAutoresizingFlexibleHeight];

tabBarController = [[UITabBarController alloc] initWithNibName:nil bundle:nil];
[tabBarController.tabBar invalidateIntrinsicContentSize];
tabBarController.viewControllers = [[NSArray alloc] initWithObjects:firstNavController, secondNavController, thirdNavController, fourthNavController, nil];

/* Enter this line */
[[tabBarController view] setAutoresizingMask:UIViewAutoresizingFlexibleHeight];

tabBarController.delegate = self;
[tabBarController.view setNeedsLayout];

我尝试了您的代码并获得了结果：

这是屏幕截图：