swift UITabBar 实现底部tabbar

效果展示

问题1 。这图怎么这么奇怪。

因为图片是随便找的图

看网上说合适的图片设置：

1x  ：30X30

2x  ：60X60

3x  ：90X90

 

也有讲48 x 32 是最合适的。。

没有ui妹子只能弄个demo图片。。；了

问题2  轮播图。不错。。。

  下片博客贴轮播图代码

正式开始

首先创建两个空的ViewController

HomeViewController

//
//  HomeViewController.swift
//  geekTime
//
//  Created by liuan on 2020/9/14.
//  Copyright © 2020 liuan. All rights reserved.
//

import UIKit
import Kingfisher
class HomeViewController: BaseViewController{


    override func viewDidLoad() {
        super.viewDidLoad()
    

    }
    



}

MineViewController

//
//  MainViewController.swift
//  geekTime
//
//  Created by liuan on 2020/9/14.
//  Copyright © 2020 liuan. All rights reserved.
//

import UIKit

class MineViewController: BaseViewController {

    override func viewDidLoad() {
        super.viewDidLoad()

        // Do any additional setup after loading the view.
    }
    

    /*
    // MARK: - Navigation

    // In a storyboard-based application, you will often want to do a little preparation before navigation
    override func prepare(for segue: UIStoryboardSegue, sender: Any?) {
        // Get the new view controller using segue.destination.
        // Pass the selected object to the new view controller.
    }
    */

}

然后修改 ViewController 代码

//
//  ViewController.swift
//  geekTime
//
//  Created by liuan on 2020/9/14.
//  Copyright © 2020 liuan. All rights reserved.
//

import UIKit

class ViewController: UITabBarController {

    override func viewDidLoad() {
        super.viewDidLoad()
         
        let homeVC = HomeViewController()
        homeVC.tabBarItem.image = UIImage(named: "home")
        homeVC.tabBarItem.selectedImage =  UIImage(named: "home_select")?.withRenderingMode(.alwaysOriginal)
        homeVC.tabBarItem.title = "首页"
         homeVC.tabBarItem.setTitleTextAttributes([.foregroundColor:UIColor.hexColor(0x333333)], for: .selected)
        let navigationHomeVC = UINavigationController(rootViewController: homeVC)
        self.addChild(navigationHomeVC)
        
        let mineVC = MineViewController()
        mineVC.tabBarItem.image =  UIImage(named: "My")
        mineVC.tabBarItem.selectedImage =  UIImage(named: "My_select")?.withRenderingMode(.alwaysOriginal)
        mineVC.tabBarItem.title = "我的"
        mineVC.tabBarItem.setTitleTextAttributes([.foregroundColor:UIColor.hexColor(0x333333)], for: .selected)
        let navigationMineVC = UINavigationController(rootViewController: mineVC)
        self.addChild(navigationMineVC)
        
 
    }


}

把  ViewController 设置为入口