自定义UITabBarController Swift_自定义 uitabbarcontroller swift

import UIKit
 
class TabBarViewController: UITabBarController {
 
    override func viewDidLoad() {
        super.viewDidLoad()
 
        self.tabBar.backgroundColor = UIColor.white
        self.tabBar.isOpaque = false
        setUpTabBar(img: "首页", selImg: "首页Sel", title: "预警", viewController: MainViewController())
        setUpTabBar(img: "我的", selImg: "我的Sel", title: "我的", viewController: MineViewController())
    }
    
    func setUpTabBar(img:String, selImg:String, title:String, viewController:BasicViewController) {
        let nav = UINavigationController(rootViewController: viewController)
        nav.isNavigationBarHidden = true
        nav.tabBarItem.image = UIImage(named: img)?.withRenderingMode(.alwaysOriginal)
        nav.tabBarItem.selectedImage = UIImage(named: selImg)?.withRenderingMode(.alwaysOriginal)
        nav.title = title
        nav.tabBarItem.setTitleTextAttributes([.foregroundColor: UIColor(red: 165.0/255.0, green: 165.0/255.0, blue: 165.0/255.0, alpha: 1), .font: UIFont.systemFont(ofSize: 12)], for: UIControlState.normal)
        nav.tabBarItem.setTitleTextAttributes([.foregroundColor: ButtonColor, .font: UIFont.systemFont(ofSize: 12)], for: UIControlState.selected)
        self.addChildViewController(nav)
    }
}

使用：

let appDelegate = (UIApplication.shared.delegate) as! AppDelegate
appDelegate.window!.rootViewController = TabBarViewController()