swift-教你如何实现导航上的UISearchController动画效果。

////  searchResultTable.swift//  搜索框////  Created by 卢洋 on 15/11/6.//  Copyright © 2015年 奈文摩尔. All rights reserved.//import UIKitclass searchTable: UITableViewController,UISearchBarDelegate{    lazy var dismissBtn: UIButton = { UIButton(frame: CGRectMake(0, 0, 24, 24)) }();//返回按钮        var itemsString:[String]!    var searcher:UISearchController!    var searchBars:UISearchBar?        struct SearchControllerRestorableState {        var wasActive = false        var wasFirstResponder = false    }    var restoredState = SearchControllerRestorableState();        //初始化函数    override func viewDidLoad() {        super.viewDidLoad();        self.title="查找商家";        initView();            }        //初始化UI    func initView(){        dismissBtnPrepare();        //创建Table        self.tableView=UITableView(frame: CGRectMake(0, 80, UIScreen.mainScreen().bounds.width, UIScreen.mainScreen().bounds.height));        self.tableView.delegate=self;        self.tableView.dataSource=self;        self.tableView.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cells")                //1.读取表格数据        let tablePath = NSBundle.mainBundle().pathForResource("states", ofType: "txt")!;        let tableData=try! NSString(contentsOfFile: tablePath, encoding: NSUTF8StringEncoding);        itemsString = tableData.componentsSeparatedByString("/n") as [String];                let src = searchResultTable(data: itemsString)        searcher = UISearchController(searchResultsController: src)                searcher.searchResultsUpdater = src;        //获取焦点时有阴影效果        searcher.dimsBackgroundDuringPresentation=true;        //获取焦点导航向上移的动画效果        searcher.hidesNavigationBarDuringPresentation=true;        searchBars = searcher.searchBar        tableView.tableHeaderView = searchBars        searchBars?.delegate=self;        searchBars?.placeholder="输入商家名称";        //取消按钮颜色和文本框光标颜色        searchBars?.tintColor=UIColor.blueWithTabbar();        //搜索框背景颜色        //searchBars?.barTintColor=UIColor.blackColor();        searcher.searchBar.sizeToFit();        self.tableView.reloadData();
　　　　　//背景充满导航        definesPresentationContext = true;    }    override func viewDidAppear(animated: Bool) {        super.viewDidAppear(animated)                // Restore the searchController's active state.        if restoredState.wasActive {            searcher.active = restoredState.wasActive            restoredState.wasActive = false                        if restoredState.wasFirstResponder {                searcher.searchBar.becomeFirstResponder()                restoredState.wasFirstResponder = false            }        }    }        override func viewDidDisappear(animated: Bool) {        super.viewDidAppear(animated);        //2.3将状态栏变为白色        UIapplication.sharedApplication().statusBarStyle = UIStatusBarStyle.LightContent;    }    func searchBarSearchButtonClicked(searchBar: UISearchBar) {        searchBar.resignFirstResponder()    }    override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {        return itemsString.count    }        override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {        let cell = tableView.dequeueReusableCellWithIdentifier("cells", forIndexPath: indexPath)        cell.textLabel!.text = itemsString[indexPath.row];        return cell    }    override func tableView(tableView: UITableView, didSelectRowAtIndexPath indexPath: NSIndexPath) {        //取消选中的样式        tableView.deselectRowAtIndexPath(indexPath, animated: true);        //获取点击的行索引        if(indexPath.row == 0){                    }            }    /** 返回按钮 */    func dismissBtnPrepare(){        dismissBtn.setImage(UIImage(named: "img.bundle/cancel"), forState: UIControlState.Normal)        dismissBtn.addTarget(self, action: "dismissLogin", forControlEvents: UIControlEvents.TouchUpInside)        self.navigationItem.leftBarButtonItem = UIBarButtonItem(customView: dismissBtn)    }    /** 释放当前页面 */    func dismissLogin(){        self.dismissViewControllerAnimated(true, completion: nil)    }    func searchBarCancelButtonClicked(searchBar: UISearchBar) {        print("b");        //2.3将状态栏变为白色        UIApplication.sharedApplication().statusBarStyle = UIStatusBarStyle.LightContent;    }    //搜索框开始编辑事件    func searchBarTextDidBeginEditing(searchBar: UISearchBar) {        //2.3将状态栏变为白色        UIApplication.sharedApplication().statusBarStyle = UIStatusBarStyle.Default;    }    func searchBarTextDidEndEditing(searchBar: UISearchBar) {        //2.3将状态栏变为白色        UIApplication.sharedApplication().statusBarStyle = UIStatusBarStyle.LightContent;            }}

////  searchResultTable2.swift//  searchBarDemo////  Created by 卢洋 on 15/11/6.//  Copyright © 2015年 奈文摩尔. All rights reserved.//import Foundationimport UIKitclass searchResultTable:UITableViewController,UISearchResultsUpdating{    var tableData:UITableView!;    var originalData:[String]!                  //原数据    var filteredData:[String]!                  //过滤数据        override func viewDidLoad() {        super.viewDidLoad();        self.title="输入商家名称";        initView()    }    init(data:[String]){        originalData = data        super.init(nibName: nil, bundle: nil)            }        required init?(coder aDecoder: NSCoder) {        fatalError("init(coder:) has not been implemented")    }        //初始化UI    func initView(){        //创建Table        tableData=UITableView(frame: CGRectMake(0, 0, UIScreen.mainScreen().bounds.width, UIScreen.mainScreen().bounds.height));        self.view.addSubview(tableData);        //tableData.backgroundColor=UIColor.redColor();        tableData.delegate=self;        tableData.dataSource=self;        tableData.registerClass(UITableViewCell.self, forCellReuseIdentifier: "cells")            }         override func tableView(tableView: UITableView, numberOfRowsInSection section: Int) -> Int {        // #warning Incomplete implementation, return the number of rows        return filteredData.count    }     override func tableView(tableView: UITableView, cellForRowAtIndexPath indexPath: NSIndexPath) -> UITableViewCell {        let cell = tableView.dequeueReusableCellWithIdentifier("cells", forIndexPath: indexPath)                cell.textLabel!.text = originalData[indexPath.row];                return cell    }    func updateSearchResultsForSearchController(searchController: UISearchController) {        let searchBar=searchController.searchBar;        let target=searchBar.text;        filteredData = originalData.filter()            {                                s in                var options = NSStringCompareOptions.CaseInsensitiveSearch                if searchController.searchBar.selectedScopeButtonIndex == 0                {                    options = options.union(.AnchoredSearch)                }                let found = s.rangeOfString(target!, options: options)                                return (found != nil)        }        tableData.reloadData()            }    override func didReceiveMemoryWarning() {        super.didReceiveMemoryWarning();    }}