AddressBook获取用户信息

- (void)viewDidLoad {
    [super viewDidLoad];
    
    _table.delegate = self;
    _table.dataSource = self;
    _array = [[NSMutableArray alloc] init];
    _resultArray = [[NSMutableArray alloc] init];
    
    __block ABAddressBookRef addressBook;
        //请求通讯录使用权限
    ABAddressBookRequestAccessWithCompletion(addressBook, ^(bool granted, CFErrorRef error) {
        if (!granted) {
            NSLog(@"权限已关闭，请去设置中打开权限");
        }
            //获取通讯录
        addressBook = ABAddressBookCreateWithOptions(NULL, NULL);
        
            //把通讯里中所有的联系人复制到一个数组中。
        NSArray *peopleArray =  (NSArray *)ABAddressBookCopyArrayOfAllPeople(addressBook);
        
            //NSLog(@"%lu",peopleArray.count);
        for (int i = 0; i<peopleArray.count; i++) {
            ABRecordRef person = [peopleArray objectAtIndex:i];
            People *p = [[People alloc] init];
            p.name = (NSString *)ABRecordCopyCompositeName(person);
            
            ABMultiValueRef ref = ABRecordCopyValue(person, kABPersonPhoneProperty);
            
            p.phone = ABMultiValueCopyValueAtIndex(ref, 0);
            [_array addObject:p];
            [p release];
        }
            //权限的请求是异步执行的，所以数据会在tableView出现之后读取完毕，需要刷新tableView才能显示。
            //[_table reloadData];
        
            //performSelectorOnMainThread在主线程中调用方法
            //waitUntilDone,YES就是同步，NO就是异步。
        [_table performSelectorOnMainThread:@selector(reloadData) withObject:nil waitUntilDone:YES];
    });

    _searchBar = [[UISearchBar alloc] initWithFrame:CGRectMake(0, 0, 375, 40)];
    _searchBar.barStyle = UIBarStyleDefault;
        //设置搜索范围的button数量和标题
    _searchBar.scopeButtonTitles = @[@"按照姓名搜索",@"按照电话搜索"];
        //_searchBar.tintColor = [UIColor greenColor];
    _searchBar.barTintColor = [UIColor purpleColor];
    [_searchBar setImage:[UIImage imageNamed:@"123.png"] forSearchBarIcon:UISearchBarIconSearch state:UIControlStateNormal];
    
    _display = [[UISearchDisplayController alloc] initWithSearchBar:_searchBar contentsController:self];
        //设置搜索代理
    _display.delegate = self;
        //设置结果表的代理
    _display.searchResultsDelegate = self;
        //设置结果表的数据源
    _display.searchResultsDataSource = self;
        //tableHeaderView，表头，一个表只有一个表头。在tableView的最顶端。
    _table.tableHeaderView = _searchBar;
    
}
    //当搜索栏中的文本发生编辑时调用，返回YES刷新结果表，返回NO不刷新结果表
- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString{
        //每次搜索前，先清空上次的搜索结果
    [_resultArray removeAllObjects];
    
    if (_searchBar.selectedScopeButtonIndex == 0) {
            //按照姓名搜索
        for (People *p in _array) {
                //hasPrefix判断一个字符串是否以另一个字符串开头。
                //uppercaseString把字符串中所有字母转成大写。
            if ([[p.name uppercaseString] hasPrefix:[searchString uppercaseString]]) {
                [_resultArray addObject:p];
            }
        }
    }else{
            //按照电话搜索
        for (People *p in _array) {
            if ([p.phone hasPrefix:searchString]) {
                [_resultArray addObject:p];
            }
        }
    }
    return YES;
}

- (BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption{
    [self searchDisplayController:controller shouldReloadTableForSearchString:_searchBar.text];
    return YES;
}

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{
    if (tableView == _table) {
        return _array.count;
    }else{
            //结果表
        return _resultArray.count;
    }
}

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath{
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"cell"];
    if (!cell) {
        cell = [[[UITableViewCell alloc] initWithStyle:UITableViewCellStyleValue1 reuseIdentifier:@"cell"] autorelease];
    }
    People *p = [tableView == _table?_array:_resultArray objectAtIndex:indexPath.row];
    cell.textLabel.text = p.name;
    cell.detailTextLabel.text = p.phone;
    return cell;
}

 效果如下：