效果图

import UIKit
class ViewController: UIViewController {
    var tableView: UITableView!
    //搜索控制器
    var searchController = UISearchController()
    //原始数组
    let someArray = ["aoxiaomi","A Private Conversation ","Breakfast Or Lunch","Please Send Me A Card","An Exciting Trip","No Wrong Numbers","Percy Buttons","Too Late","The Best And The Worst","A Cold Welcome","Not For Jazz"]
    //搜索数组
    var searchedArray = [String](){
        didSet  {self.tableView.reloadData()}
    }
    override func viewDidLoad() {
        super.viewDidLoad()
        self.tableView = UITableView(frame: CGRectMake(0, 20, view.bounds.width, view.bounds.height-20),style: .Plain)
        self.tableView.delegate = self
        self.tableView.dataSource = self
        self.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "Cell")
        self.view.addSubview(self.tableView)

        self.searchController = {
            let c = UISearchController(searchResultsController: nil)
            c.searchResultsUpdater = self
            c.hidesNavigationBarDuringPresentation = false
            c.dimsBackgroundDuringPresentation = false
            c.searchBar.searchBarStyle = .Minimal
            c.searchBar.sizeToFit()
            self.tableView.tableHeaderView = c.searchBar
            return c
        }()
        self.tableView.reloadData()
    }
}

import UIKit
extension ViewController:UITableViewDataSource{
    func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {
        if searchController.active {//被点击
            return self.searchedArray.count
        }else{//没点击
            return self.someArray.count
        }
    }
    func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {
        
        let cell = tableView.dequeueReusableCellWithIdentifier("Cell", forIndexPath: indexPath)
        if searchController.active {
            cell.textLabel!.text = self.searchedArray[indexPath.row]
        }else {
            cell.textLabel!.text = self.someArray[indexPath.row]
        }
        return cell
    }
}
extension ViewController:UITableViewDelegate{
    func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {
        tableView.deselectRowAtIndexPath(indexPath, animated: true)
    }
}
extension ViewController:UISearchResultsUpdating{
    func updateSearchResultsForSearchController(searchController: UISearchController) {
        self.searchedArray.removeAll(keepCapacity: false)
        let searchPredicate = NSPredicate(format: "SELF CONTAINS[c] %@", searchController.searchBar.text!)
        let array = NSArray(array: self.someArray).filteredArrayUsingPredicate(searchPredicate)
        self.searchedArray = array as! [String]
    }
}