//

 //  WKRootViewController.m

 //  表格视图的搜索功能

 //

 //  Created by student on 14-10-20.

 //  Copyright (c) 2014年 wukong. All rights reserved.

 //

 #import "WKRootViewController.h"

 @interface WKRootViewController ()

 @property (strong, nonatomic) NSMutableArray* dataSource;

 @property (strong, nonatomic)NSMutableArray* resultArrat;

 @end

 @implementation WKRootViewController

 {

     //用于加载数据源的表视图

     UITableView *_tableView;

     UISearchBar *_searchBar;

     UISearchDisplayController *_searchControl;

 }

 - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

 {

     self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil];

     if (self) {

         // Custom initialization

     }

     return self;

 }

 - (void)viewDidLoad

 {

     [super viewDidLoad];

     [self createUI];

     [self createDataSource];

     // Do any additional setup after loading the view.

 }

 - (void)createDataSource

 {

     _dataSource = [[NSMutableArray alloc] init];

     _resultArrat = [[NSMutableArray alloc] init];

     for (int i = 'A'; i <= 'z'; i++) {

         NSMutableArray *section = [[NSMutableArray alloc] init];

         for (int j = ; j <= ; j++) {

             NSString *str = [NSString stringWithFormat:@"%c-%d", i, j];

             [section addObject:str];

         }

         [_dataSource addObject:section];

     }

 }

 #pragma mark- UITableViewDataSource

 - (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView

 {

     //判断当前展示的表格

     if (tableView != _tableView)

         return ;

     return _dataSource.count;

 }

 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section

 {

     if (tableView != _tableView) {

         return _resultArrat.count;

     }

     return [[_dataSource objectAtIndex:section] count];

 }

 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath

 {

     [tableView registerClass:[UITableViewCell class] forCellReuseIdentifier:@"cell"];

     UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];

     if (tableView != _tableView) {

         cell.textLabel.text = [_resultArrat objectAtIndex:indexPath.row];

     }else{

         cell.textLabel.text = [[_dataSource objectAtIndex:indexPath.section] objectAtIndex:indexPath.row];

     }

     return cell;

 }

 - (void)didReceiveMemoryWarning

 {

     [super didReceiveMemoryWarning];

     // Dispose of any resources that can be recreated.

 }

 #pragma mark - CreateUI

 - (void)createUI

 {

     _tableView = [[UITableView alloc] initWithFrame:CGRectMake(, , , ) style:UITableViewStylePlain];

     _tableView.delegate = self;

     _tableView.dataSource = self;

     [self.view addSubview:_tableView];

     _searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(, , , )];

     _searchBar.searchBarStyle = UISearchBarStyleMinimal;

     _searchBar.delegate = self;

     [_tableView setTableHeaderView:_searchBar];

     /*

      第一个参数：用于输入搜索内容的UISearchBar对象

      第二个参数：提供给我的表格视图数据源的控制器对象，这个对象必须是实现了表格的两个协议

      */

     _searchControl = [[UISearchDisplayController alloc] initWithSearchBar:_searchBar contentsController:self];

 //    _searchControl.searchResultsTableView

 //    UILabel *label = [[UILabel alloc] initWithFrame:CGRectMake(0, 0, 60, 30)];

 //    label.backgroundColor =[UIColor redColor];

 //    [_searchControl.searchResultsTableView setTableHeaderView:label];

     //设置_searchControl自带的表格视图的委托对象

     [_searchControl setSearchResultsDataSource:self];

     [_searchControl setSearchResultsDelegate:self];

 }

 #pragma mark -UISearchBarDelegate

 - (void)searchBar:(UISearchBar *)searchBar textDidChange:(NSString *)searchText

 {

     [_resultArrat removeAllObjects];

     NSString *str = [NSString stringWithFormat:@"*%@*", searchText];

     NSPredicate *pred = [NSPredicate predicateWithFormat:@"SELF like %@", str];

     for (NSMutableArray *arr in _dataSource) {

         for (NSString *str in arr) {

             if ([pred evaluateWithObject:str]) {

                 [_resultArrat addObject:str];

             }

         }

     }

 }

 @end