UI1_UITableViewSearchController

//  UI1_UITableViewSearchController
//
//  Created by zhangxueming on 15/7/15.
//  Copyright (c) 2015年 zhangxueming. All rights reserved.
//

#import "AppDelegate.h"
#import "ViewController.h"

@interface AppDelegate ()

@end

@implementation AppDelegate

- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
    // Override point for customization after application launch.
    ViewController *root = [[ViewController alloc] init];
    UINavigationController *nav = [[UINavigationController alloc] initWithRootViewController:root];
    self.window.rootViewController = nav;
    self.window.backgroundColor = [UIColor whiteColor];
    [self.window makeK

//
//  ViewController.m
//  UI1_UITableViewSearchController
//
//  Created by zhangxueming on 15/7/15.
//  Copyright (c) 2015年 zhangxueming. All rights reserved.
//

#import "ViewController.h"

@interface ViewController ()
{
    UITableView *_tableView;//表视图
    NSMutableArray *_dataList;//数据源
    //UISearchDisplayController
    UISearchController *_searchController;//搜索控制器
    NSMutableArray *_searchList;//搜索的结果
}
@end

@implementation ViewController

- (void)viewDidLoad {
    [super viewDidLoad];
    // Do any additional setup after loading the view, typically from a nib.
    [self createData];
    [self createUI];
}

- (void)createData
{
    _dataList = [NSMutableArray array];
    _searchList = [NSMutableArray array];
    for (int i='A'; i<='Z'; i++) {
        NSMutableArray *array = [NSMutableArray array];
        for (int j=0; j<5; j++) {
            NSInteger num = arc4random()%50+1;
            NSString *name = [NSString stringWithFormat:@"人物%d:name%ld",j,num];
            [array addObject:name];
        }
        [_dataList addObject:array];
    }
}

- (void)createUI
{
    _tableView = [[UITableView alloc] initWithFrame:self.view.frame style:UITableViewStylePlain];
    _tableView.delegate = self;
    _tableView.dataSource  = self;
    [self.view addSubview:_tableView];

    //创建搜索控制器, nil 表示在当前view上显示搜索结果
    _searchController = [[UISearchController alloc] initWithSearchResultsController:nil];
    //更新搜索结果
    _searchController.searchResultsUpdater = self;
    //隐藏导航栏
    _searchController.hidesNavigationBarDuringPresentation = NO;
    //背景变暗
    _searchController.dimsBackgroundDuringPresentation = NO;
    //添加searchBar
    CGRect frame = _searchController.searchBar.frame;
    frame.size.height = 44;
    _searchController.searchBar.frame = frame;
    _tableView.tableHeaderView = _searchController.searchBar;
}

#pragma mark  ---UITableView代理---

//返回分区的个数
- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView
{
    if(_searchController.active)
    {
        return 1;
    }
    else
    {
        return _dataList.count;
    }
}
//返回分区中的行数
- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
{
    //_dataList[section] <==> [_dataList objectAtIndex:section];
    if (_searchController.active) {
        return _searchList.count;
    }
    return [_dataList[section] count];
}

//创建cell

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *cellId = @"cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellId];
    if (!cell) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellId];
    }

    cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    if (_searchController.active) {
        cell.textLabel.text = _searchList[indexPath.row];//[_searchList objectAtIndex:indexPath.row];
    }
    else
    {
        cell.textLabel.text = _dataList[indexPath.section][indexPath.row];
    }
    return cell;
}

//设置分区的头标题

- (NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section
{
    if (_searchController.active) {
        return @"搜索结果";
    }
    return [NSString stringWithFormat:@"%c",(char)(section+'A')];
}
//设置分区头的高度
- (CGFloat)tableView:(UITableView *)tableView heightForHeaderInSection:(NSInteger)section
{
    return 50;
}

//设置分区索引
- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView
{
    if(_searchController.active)
    {
        return nil;
    }
    NSMutableArray *titles = [NSMutableArray array];
    [titles addObject:UITableViewIndexSearch];
    for (int i='A'; i<='Z'; i++) {
        [titles addObject:[NSString stringWithFormat:@"%c",(char)i]];
    }
    return titles;
}

- (NSInteger)tableView:(UITableView *)tableView sectionForSectionIndexTitle:(NSString *)title atIndex:(NSInteger)index
{
    return index-1;
}

//更新搜索结果
- (void)updateSearchResultsForSearchController:(UISearchController *)searchController
{
    [_searchList removeAllObjects];
    //NSPredicate 谓词语法
    //过滤数据
    NSString *searchString = _searchController.searchBar.text;
    for (int i=0; i<_dataList.count; i++) {
        NSInteger count = [[_dataList objectAtIndex:i] count];
        for (NSInteger j=0; j<count; j++) {
            NSString *obj = [[_dataList objectAtIndex:i] objectAtIndex:j];
            if ([obj containsString:searchString]) {
                [_searchList addObject:obj];
            }
        }
    }
    [_tableView reloadData];
}

- (void)didReceiveMemoryWarning {
    [super didReceiveMemoryWarning];
    // Dispose of any resources that can be recreated.
}

@end

eyAndVisible]; return YES; } // // ViewController.h // UI1_UITableViewSearchController // // Created by zhangxueming on 15/7/15. // Copyright (c) 2015年 zhangxueming. All rights reserved. // #import <UIKit/UIKit.h> @interface ViewController : UIViewController <UITableViewDelegate, UITableViewDataSource,UISearchResultsUpdating> @end