仿照iphone手机通讯录 搜索功能

模仿iphone手机通讯录

项目之前实现了拼音排序 通讯录的设计。现在给通讯录增加搜索功能。

原界面如下：

搜索功能主要依靠 uisearchbar uisearchdisplaycontroller来实现

第一步  初始化：初始化searbar 和seardisplaycontroller 以及 对应的两个数组（用来显示全部结果以及搜索结果）还有对应的delegate

@interface ComunicationViewController ()<UISearchBarDelegate,UISearchDisplayDelegate>{    UISearchDisplayController *searchDisplayController;    UISearchBar *searchBar;    NSArray *allItems;    NSArray *searchResults;}

    searchBar = [[UISearchBar alloc] init];    searchBar.delegate = self;    searchBar.placeholder = @"请输入姓名";    [searchBar setAutocapitalizationType:UITextAutocapitalizationTypeNone];        [searchBar sizeToFit];    comunicationTabelView.tableHeaderView = searchBar;    //comunicationTabelView.frame = CGRectMake(0, 0, 320, comunicationTabelView.frame.size.height);                searchDisplayController = [[UISearchDisplayController alloc] initWithSearchBar:searchBar contentsController:self];     [searchDisplayController setDelegate:self];        [searchDisplayController setSearchResultsDataSource:self];        [searchDisplayController setSearchResultsDelegate:self];

- (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope {        NSPredicate *resultPredicate = [NSPredicate predicateWithFormat:@"SELF contains[cd] %@",                                     searchText];        searchResults = [[allItems valueForKey:@"RealName"] filteredArrayUsingPredicate:resultPredicate];    [searchResults retain];    NSLog(@"%@",searchResults);    }#pragma mark - UISearchDisplayController delegate methods-(BOOL)searchDisplayController:(UISearchDisplayController *)controller  shouldReloadTableForSearchString:(NSString *)searchString {        [self filterContentForSearchText:searchString  scope:[[self.searchDisplayController.searchBar scopeButtonTitles]  objectAtIndex:[self.searchDisplayController.searchBar                                                      selectedScopeButtonIndex]]];        return YES;    }- (BOOL)searchDisplayController:(UISearchDisplayController *)controller  shouldReloadTableForSearchScope:(NSInteger)searchOption {        [self filterContentForSearchText:[self.searchDisplayController.searchBar text] scope:[[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]];        return YES;    }

#pragma mark -comunicationTableView代理方法//section中的row数- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section{    if (tableView == searchDisplayController.searchResultsTableView)    {        return searchResults.count;    }    else    {        return[[numArr objectAtIndex:section] intValue] ;    }}//高度- (CGFloat)tableView:(UITableView *)tableView heightForRowAtIndexPath:(NSIndexPath *)indexPath{    return 50;}//section数- (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView{    if (tableView == searchDisplayController.searchResultsTableView)    {        return 1;    }    else    {        return ziMuArr.count;    }}//section 的名字-(NSString *)tableView:(UITableView *)tableView titleForHeaderInSection:(NSInteger)section{    if (tableView == searchDisplayController.searchResultsTableView)    {        return nil;    }    else    {        return [ziMuArr objectAtIndex:section];    }}- (NSArray *)sectionIndexTitlesForTableView:(UITableView *)tableView{    if (tableView == searchDisplayController.searchResultsTableView){    return nil;}else{    return ziMuArr;}}