手機通訊錄

搜索功能主要依靠 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索結果）還有對應的delegate

@interface ComunicationViewController ()<UISearchBarDelegate,UISearchDisplayDelegate>

{
    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;

}

最重要的是加載時：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;
}
}