IOS 13 中的 UITabbar UI 问题 | XCode 11

Question

当我在 XCode 11.1 中运行应用程序时，UITabbar 未选中的项目不可见，如图所示

    UITabBarController *tController=[[UITabBarController alloc] init];
    tController.tabBar.selectionIndicatorImage = [UIImage imageNamed:@"footerhover.png"];
    [tController.tabBar addSubview:[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bottombar.png"]]];
    NSMutableArray *arr=[[NSMutableArray alloc] init];

    ProfileViewController *pViewController=[[ProfileViewController alloc] initWithNibName:@"ProfileViewController" bundle:nil];
    pViewController.tabBarItem.title=@"PROFILE";
    pViewController.tabBarItem.image=[UIImage imageNamed:@"profile_white.png"];
    pViewController.tabBarItem.tag = 1;
    if ([[[UIDevice currentDevice] systemVersion] compare:@"5.0" options:NSNumericSearch] == NSOrderedAscending) {
    }else{

        [pViewController.tabBarItem setImage:[[UIImage imageNamed:@"profile.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];

        [pViewController.tabBarItem setSelectedImage:[[UIImage imageNamed:@"profile_white.png"] imageWithRenderingMode:UIImageRenderingModeAlwaysOriginal]];

    }
    UINavigationController *nav1=[[UINavigationController alloc] initWithRootViewController:pViewController];
    senderArray[0] = nav1;
    [arr addObject:nav1];
    tController.viewControllers=senderArray;

Tabbar 在 XCode 10.3 / IOS 12 中运行良好。请提出解决此问题的任何解决方案。

提前致谢

Answer 1

你必须替换这条线......

[tController.tabBar addSubview:[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bottombar.png"]]];

... 和...

[tController.view insertSubview:[[UIImageView alloc] initWithImage:[UIImage imageNamed:@"bottombar.png"]]
                   belowSubview:tController.tabBar];

addSubview文档：

要添加的视图。 添加后，此视图显示在任何其他子视图之上。