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Due to company regulations, I cannot upload engineering code on the company network，So I posted all the key code, it's a very small demo with only a few dozen lines of code。 SceneDelegate.swift： let tabbar = TabBarController() let vc0 = UIViewController() vc0.view.backgroundColor = .red vc0.tabBarItem = UITabBarItem(title: "第一个", image: UIImage(systemName: "square.and.arrow.up.badge.clock"), tag: 100) let vc1 = UIViewController() vc1.view.backgroundColor = .green vc1.tabBarItem = UITabBarItem(title: "第二个", image: UIImage(systemName: "tray.full.fill"), tag: 101) let vc2 = UIViewController() vc2.view.backgroundColor = .blue vc2.tabBarItem = UITabBarItem(title: "第三个", image: UIImage(systemName: "list.bullet.rectangle.fill"), tag: 102) tabbar.setViewControllers([vc0,vc1,vc2], animated: true) window?.rootViewController = tabbar guard let _ = (scene as? UIWindowScene) else { return } } TabBarController.swift ： import UIKit class TabBarController: UITabBarController { override func viewDidLoad() { super.viewDidLoad() setValue(CustomTabBar(), forKey: "tabBar") if #available(iOS 18.0, *) { self.mode = .tabBar self.traitOverrides.horizontalSizeClass = .compact } } } class CustomTabBar: UITabBar { var leftView = UIView() //info view var rightView = UIView() // info view override func sizeThatFits(_ size: CGSize) -> CGSize { var sizeThatFits = super.sizeThatFits(size) sizeThatFits.height = 60 return sizeThatFits } override func layoutSubviews() { super.layoutSubviews() self.backgroundColor = .gray addSubview(leftView) addSubview(rightView) leftView.backgroundColor = .green leftView.frame = CGRect(x: 10, y: 4, width: 80, height: 40) rightView.backgroundColor = .blue rightView.frame = CGRect(x: UIScreen.main.bounds.width - 90, y: 4, width: 80, height: 40) let tabBarButtonW = 100.0 var tabBarButtonX = Double(UIScreen.main.bounds.width)/2 - 150 var tabBarButtonIndex = 0 for tempView in subviews { if NSStringFromClass(type(of: tempView)) == "UITabBarButton" { tempView.frame = CGRect(x: tabBarButtonX, y: 0, width: tabBarButtonW, height: 44) tabBarButtonX = tabBarButtonX + tabBarButtonW + 50 tabBarButtonIndex += 1 } } } }

@DTS Engineer Please help me check the code I replied