1.新建模型

class Contact: NSObject {    var name : String?    var mobile : String?{        didSet{            if mobile?.lengthOfBytes(using: .utf8) == 11 {                mobileString = mobile                var spaceIndex = mobile?.index(mobile!.startIndex, offsetBy: 3)                mobileString?.insert(" ", at: spaceIndex!)                spaceIndex = mobile?.index(mobile!.endIndex, offsetBy: -3)                mobileString?.insert(" ", at: spaceIndex!)            }        }    }    var address : String?    var email : String?    var mobileString : String?}

2.搜索控制器

class TestViewController: UIViewController,UISearchResultsUpdating{    func updateSearchResults(for searchController: UISearchController) {            }    var searchResultsCon = ResultsTableViewController()    override func viewDidLoad() {        super.viewDidLoad()        view.backgroundColor = #colorLiteral(red: 1.0, green: 1.0, blue: 1.0, alpha: 1.0)    }

import UIKitclass ResultsTableViewController: UITableViewController {    var contacts = Array
     
      ()    override func viewDidLoad() {        super.viewDidLoad()        // Uncomment the following line to preserve selection between presentations        // self.clearsSelectionOnViewWillAppear = false        // Uncomment the following line to display an Edit button in the navigation bar for this view controller.        // self.navigationItem.rightBarButtonItem = self.editButtonItem    }    override func didReceiveMemoryWarning() {        super.didReceiveMemoryWarning()        // Dispose of any resources that can be recreated.    }    // MARK: - Table view data source    override func numberOfSections(in tableView: UITableView) -> Int {        // #warning Incomplete implementation, return the number of sections        return 1    }    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {        // #warning Incomplete implementation, return the number of rows        return contacts.count    }    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {        let cell = UITableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "reuseID")        if contacts.count > indexPath.row {            let contact = contacts[indexPath.row]           cell.textLabel!.text = contact.mobileString        }        cell.textLabel!.textColor = UIColor.brown        return cell    }
     

3.主控制器

class ViewController: UITableViewController,UISearchResultsUpdating{    var searchResultsCon = ResultsTableViewController()    var contacts = Array
     
      ()    override func viewDidLoad() {        super.viewDidLoad()        configureTableView()        configureNavigationBar()    }    func configureTableView(){        tableView.estimatedRowHeight = 44.0        tableView.estimatedSectionHeaderHeight = 0.0        tableView.estimatedSectionFooterHeight = 0.0        for _ in 0...20 {            let temp = Int(arc4random_uniform(1000000000)) + 15000000000            let contact = Contact()            contact.mobile = String(temp)            contacts.append(contact)        }    }    func configureNavigationBar(){        if #available(iOS 11.0, *) {            self.navigationController?.navigationBar.prefersLargeTitles = true            //导航栏文本颜色            self.navigationController?.navigationBar.titleTextAttributes = [.foregroundColor:#colorLiteral(red: 0.9254902005, green: 0.2352941185, blue: 0.1019607857, alpha: 1)]            self.navigationController?.navigationBar.largeTitleTextAttributes = [.foregroundColor:#colorLiteral(red: 0.1764705926, green: 0.4980392158, blue: 0.7568627596, alpha: 1)]            //search            let mySearchController: UISearchController = UISearchController(searchResultsController: searchResultsCon)            mySearchController.searchResultsUpdater = self            // 设置模态出结果页搜索前不隐藏导航栏//            mySearchController.hidesNavigationBarDuringPresentation = false            self.navigationItem.searchController = mySearchController            // 搜索框默认显示并且滚动不消失            self.navigationItem.hidesSearchBarWhenScrolling = false            //当模态出结果页搜索后不隐藏导航栏            self.definesPresentationContext = true            //刷新控件            tableView.refreshControl = UIRefreshControl()            tableView.refreshControl?.addTarget(self, action: #selector(self.refreshData), for: .valueChanged)        }    }    override func didReceiveMemoryWarning() {        super.didReceiveMemoryWarning()    }    //MARK -- tableView    override func tableView(_ tableView: UITableView, numberOfRowsInSection section: Int) -> Int {        return contacts.count    }    override func tableView(_ tableView: UITableView, cellForRowAt indexPath: IndexPath) -> UITableViewCell {        let cell = UITableViewCell(style: UITableViewCellStyle.default, reuseIdentifier: "reuseID")        if contacts.count > indexPath.row {            let contact = contacts[indexPath.row]            cell.textLabel?.text = contact.mobileString        }        return cell    }    override func tableView(_ tableView: UITableView, didSelectRowAt indexPath: IndexPath) {        tableView.deselectRow(at: indexPath, animated: true)        self.navigationController?.pushViewController(TestViewController(), animated: true)    }    @objc func refreshData(){        DispatchQueue.main.asyncAfter(deadline: DispatchTime.now() + .seconds(2), execute: {            self.tableView.refreshControl?.endRefreshing()        })    }    //MARK -- searchController    @available(iOS 8.0, *)    func updateSearchResults(for searchController: UISearchController) {        let searchText = searchController.searchBar.text!        let contactList = contacts.filter({ (con) -> Bool in            return (con.mobile?.hasPrefix(searchText))!        })        searchResultsCon.contacts = contactList        searchResultsCon.tableView.reloadData()    }    override func scrollViewWillBeginDragging(_ scrollView: UIScrollView) {        // 搜索框滚动时消失        self.navigationItem.hidesSearchBarWhenScrolling = true    }}