导航栏和searchBar的使用和tableview

import UIKit
class HomeViewController: BaseViewController ,UITableViewDelegate,UITableViewDataSource{

    override func viewDidLoad() {
        super.viewDidLoad()
        
        let titleViewBG = UIView(frame:CGRect(x:10,y:10,width:312,height:30))
        let searchBar = UISearchBar(frame:CGRect(x:0,y:0,width:312,height:30))
        searchBar.placeholder = "请输入搜索内容"
        searchBar.tintColor = UIColor.init(red: 1, green: 0.11, blue: 0.5, alpha: 1)
        searchBar.backgroundColor = UIColor.init(red: 0.95, green: 0.95, blue: 0.95, alpha: 1)
        searchBar.setSearchFieldBackgroundImage(setImageColor(UIColor.white, searchBar.bounds.size), for: UIControl.State.normal)
        searchBar.backgroundImage = setImageColor(UIColor.white, searchBar.bounds.size);
        titleViewBG.addSubview(searchBar)
        self.navigationItem.titleView = titleViewBG
    
        self.navigationItem.rightBarButtonItem = UIBarButtonItem.init(image: UIImage.init(named: "nav_classify_selected")?.withRenderingMode(.alwaysOriginal), style: .plain, target: self, action: #selector(imageBarButtonItemMethod))
        
        let tableView = UITableView.init(frame: CGRect.init(x: 0, y: 0, width: UIScreen.main.bounds.size.width, height: UIScreen.main.bounds.size.height), style: .plain)
        tableView.rowHeight = 40
        tableView.register(UITableViewCell.self, forCellReuseIdentifier: "cell")
        tableView.delegate = self
        tableView.dataSource = self
        self.view.addSubview(tableView)
        
    }
    
    func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        return 10
    }
    
    func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {
        let cell = tableView.dequeueReusableCell(withIdentifier: "cell")
        cell?.textLabel?.text = "哈哈哈哈哈👌"
        return cell!
    }
    
    func setImageColor(_ color: UIColor, _ size:CGSize) -> UIImage {
        let rect = CGRect(x: 0, y: 0, width: size.width, height: size.height)
        UIGraphicsBeginImageContext(rect.size)
        let context = UIGraphicsGetCurrentContext()
        context?.setFillColor(color.cgColor)
        let image = UIGraphicsGetImageFromCurrentImageContext()
        UIGraphicsEndImageContext()
        return image!
    }
    
    override func touchesBegan(_ touches: Set<UITouch>, with event: UIEvent?) {
        self.view.endEditing(true)
    }

    @objc func imageBarButtonItemMethod() {
        print("ssdsdd")
    }
    
}