模仿iphone手機通訊錄 搜尋功能。

模仿iphone手機通訊錄

項目之前實現了拼音排序 通訊錄的設計。現在給通訊錄增加搜尋功能。

原介面如下：

搜尋功能主要依靠 uisearchbar uisearchdisplaycontroller來實現

第一步 初始化：初始化searbar 和seardisplaycontroller 以及 對應的兩個數組（用來顯示全部結果以及搜尋結果）還有對應的delegate

@interface ComunicationViewController (){    UISearchDisplayController *searchDisplayController;    UISearchBar *searchBar;    NSArray *allItems;    NSArray *searchResults;}

    searchBar = [[UISearchBar alloc] init];    searchBar.delegate = self;    searchBar.placeholder = @"請輸入姓名";    [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];

第二步 一個匹配的方法 和2個delegate

- (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;    }

最重要的是載入時：tableview判斷

#pragma mark -comunicationTableView代理方法//section中的row數- (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數- (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;}} 

最後就實現了：