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