class CustomTabBarController: UITabBarController { override func viewDidLoad() { super.viewDidLoad() let controller1 = UIViewController() controller1.tabBarItem = UITabBarItem(tabBarSystemItem: .contacts, tag: 1) let nav1 = UINavigationController(rootViewController: controller1) let controller2 = UIViewController() controller2.tabBarItem = UITabBarItem(tabBarSystemItem: .contacts, tag: 2) let nav2 = UINavigationController(rootViewController: controller2) let controller3 = UIViewController() let nav3 = UINavigationController(rootViewController: controller3) nav3.title = "" let controller4 = UIViewController() controller4.tabBarItem = UITabBarItem(tabBarSystemItem: .contacts, tag: 4) let nav4 = UINavigationController(rootViewController: controller4) let controller5 = UIViewController() controller5.tabBarItem = UITabBarItem(tabBarSystemItem: .contacts, tag: 5) let nav5 = UINavigationController(rootViewController: controller5) viewControllers = [nav1, nav2, nav3, nav4, nav5] setupMiddleButton() } func setupMiddleButton() { let menuButton = UIButton(frame: CGRect(x: 0, y: 0, width: 64, height: 64)) var menuButtonFrame = menuButton.frame menuButtonFrame.origin.y = view.bounds.height - menuButtonFrame.height - 50 menuButtonFrame.origin.x = view.bounds.width/2 - menuButtonFrame.size.width/2 menuButton.frame = menuButtonFrame menuButton.backgroundColor = UIColor.red menuButton.layer.cornerRadius = menuButtonFrame.height/2 view.addSubview(menuButton) menuButton.setImage(UIImage(named: "example"), for: .normal) menuButton.addTarget(self, action: #selector(menuButtonAction(sender:)), for: .touchUpInside) view.layoutIfNeeded() } // MARK: - Actions @objc private func menuButtonAction(sender: UIButton) { selectedIndex = 2 }
}