UISearchBar和UISearchDisplayController实例应用
程序介绍:获取系统通讯录,利用 UISearchBar和UISearchDisplayController实现搜索功能
1 #import <UIKit/UIKit.h>
2
3 @interface ViewController : UIViewController<UITableViewDataSource,UITableViewDelegate,UISearchBarDelegate,UISearchDisplayDelegate>
4 {
5 NSMutableArray *_dataArray;
6
7 //搜索结果的数组
8 NSMutableArray *_resultArray;
9
10 IBOutlet UITableView *_tableView;
11 }
12
13 @end
viewController.h
viewController.m
1 #import "ViewController.h"
2 #import <AddressBook/AddressBook.h>
3
4 @interface ViewController ()
5
6 @end
7
8 @implementation ViewController
9
10 - (void)viewDidLoad
11 {
12 [super viewDidLoad];
13
14 _dataArray = [[NSMutableArray alloc] init];
15 _resultArray = [[NSMutableArray alloc] init];
16
17 //创建通讯录对象
18 ABAddressBookRef addressbook = ABAddressBookCreateWithOptions(NULL, NULL);
19 //请求权限
20 ABAddressBookRequestAccessWithCompletion(addressbook, ^(bool granted,CFErrorRef error){
21
22 //获取数据
23 NSArray *array = (NSArray *)ABAddressBookCopyArrayOfAllPeople(addressbook);
24 for (int i = 0; i < array.count; i++)
25 {
26 ABRecordRef person = array[i];
27 NSString *name = (NSString *)ABRecordCopyCompositeName(person);
28
29 ABMultiValueRef ref = ABRecordCopyValue(person, kABPersonPhoneProperty);
30 NSString *phone = (NSString *)ABMultiValueCopyValueAtIndex(ref, 0);
31 NSLog(@"%@",phone);
32
33 NSString *newPhone = [self trimString:phone];
34
35
36 NSDictionary *dic = @{@"name": name,@"phone":newPhone};
37 //把字典添加到数组中
38 [_dataArray addObject:dic];
39
40 CFRelease(name);
41 CFRelease(ref);
42 CFRelease(phone);
43
44 }
45
46 //1 YES 主线程
47 //0 NO 分线程
48 NSLog(@"%d",[NSThread isMainThread]);
49 //一般刷新界面的操作要放到 主线程（UI线程中）
50 //刷新表格 需要回到主线程中
51
52 //回到主线程的方法
53 //1.回到主线程中要执行的方法
54 //2.方法里面的参数
55 //3.YES 同步 NO 异步
56 [self performSelectorOnMainThread:@selector(reloadTableView) withObject:nil waitUntilDone:YES];
57
58
59 // [_tableView reloadData];
60
61 });
62
63
64 //搜索条 UISearchBar
65 UISearchBar *searchBar = [[UISearchBar alloc] init];
66 searchBar.frame = CGRectMake(0, 20, 320, 44);
67 //设置搜索条风格
68 searchBar.searchBarStyle = UISearchBarStyleDefault;
69 //设置搜索条占位符
70 searchBar.placeholder = @"请输入内容";
71 //设置搜索条背景颜色
72 // searchBar.barTintColor = [UIColor blueColor];
73
74 //是否显示书签按钮
75 searchBar.showsBookmarkButton = YES;
76 //是否显示取消按钮
77 searchBar.showsCancelButton = YES;
78 //是否显示结果集
79 searchBar.showsSearchResultsButton = YES;
80 //设置搜索条 搜索条件
81 searchBar.scopeButtonTitles = [NSArray arrayWithObjects:@"按照姓名搜索",@"按照电话号码搜索", nil];
82
83 //设置代理
84 searchBar.delegate = self;
85
86
87 //把searchBar设置为表格的表头view
88 _tableView.tableHeaderView = searchBar;
89 [searchBar release];
90 // [self.view addSubview:searchBar];
91
92 //搜索结果的展示器 一般是和 UISearchBar 结合使用
93 //集成 了一个searchBar和一个tableview （用来展示搜索结果）
94 //1.结果展示器和哪个搜索条绑定
95 //2.搜索到的内容要显示到哪个视图控制器上
96 UISearchDisplayController *controller = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];
97 //设置结果展示器的代理
98 controller.delegate = self;
99 //设置结果展示器的数据源
100 controller.searchResultsDataSource = self;
101 controller.searchResultsDelegate = self;
102 }
103
104 //回到主线程
105 -(void)reloadTableView
106 {
107 NSLog(@"reload。。。%d",[NSThread isMainThread]);
108 [_tableView reloadData];
109 }
110
111 #pragma mark - searchBarDelegate
112 - (void)searchBarTextDidBeginEditing:(UISearchBar *)searchBar
113 {
114 NSLog(@"搜索条开始编辑");
115 }
116
117 #pragma mark - searchDisplayDelegate
118 //搜索内容改变 并且刷新搜索结果集的表格
119 - (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
120 {
121 NSLog(@"搜索内容改变 %@",searchString);
122 //处理搜索内容
123
124 //清空上次搜索的内容
125 [_resultArray removeAllObjects];
126
127 //判断当前搜索的类型
128 if (controller.searchBar.selectedScopeButtonIndex == 0)//按照姓名搜索
129 {
130 for (NSDictionary *dic in _dataArray)
131 {
132 NSString *name = dic[@"name"];
133 //判断姓名中是否包含了 搜索字符串的内容
134 NSRange range = [name rangeOfString:searchString];
135 if (range.location != NSNotFound)
136 {
137 //当前联系人姓名中包含了搜索的字符串
138 //把匹配到的数据添加到搜索结果的数组中
139 [_resultArray addObject:dic];
140
141 }
142 }
143 }
144 else//按照电话号码搜索
145 {
146 for (NSDictionary *dic in _dataArray)
147 {
148 NSString *phone = dic[@"phone"];
149 NSRange range = [phone rangeOfString:searchString];
150 if (range.location != NSNotFound)
151 {
152 //匹配
153 [_resultArray addObject:dic];
154 }
155 }
156 }
157
158 return YES;
159 }
160
161
162 - (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption
163 {
164 NSLog(@"搜索条件切换");
165 [self searchDisplayController:controller shouldReloadTableForSearchString:controller.searchBar.text];
166 return YES;
167 }
168
169
170 #pragma mark - dataSource
171 - (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section
172 {
173 //判断当前执行协议方法的表格是哪一个
174 if (tableView == _tableView)
175 {
176 return _dataArray.count;
177 }
178 else//结果集表格
179 {
180 return _resultArray.count;
181 }
182
183 }
184
185 - (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
186 {
187 static NSString *cellID = @"Cell";
188 UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:cellID];
189 if (!cell)
190 {
191 cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleSubtitle reuseIdentifier:cellID] autorelease];
192 }
193
194 //填写数据
195 NSDictionary *dic = nil;
196
197 if (tableView == _tableView)
198 {
199 dic = _dataArray[indexPath.row];
200 }
201 else
202 {
203 dic = _resultArray[indexPath.row];
204 }
205
206 // NSDictionary *dic = _dataArray[indexPath.row];
207 cell.textLabel.text = dic[@"name"];
208 cell.detailTextLabel.text = dic[@"phone"];
209
210 return cell;
211 }
212
213
214 //过滤特殊字符
215 -(NSString *)trimString:(NSString *)string
216 {
217 string = [string stringByReplacingOccurrencesOfString:@"(" withString:@""];
218 string = [string stringByReplacingOccurrencesOfString:@")" withString:@""];
219 string = [string stringByReplacingOccurrencesOfString:@"-" withString:@""];
220 string = [string stringByReplacingOccurrencesOfString:@" " withString:@""];
221 return string;
222 }
223
224
225 -(void)dealloc
226 {
227 [_dataArray release];
228 [_resultArray release];
229 [super dealloc];
230 }
231
232 - (void)didReceiveMemoryWarning
233 {
234 [super didReceiveMemoryWarning];
235 // Dispose of any resources that can be recreated.
236 }
237
238 @end
VIewController.m
注:UISearchDisplayController搜索结果展示是以表的形式,所以包括DataSource和Delegate两个代理,数据代理与TableView一样.
时间： 2024-08-02 15:11:15