iphone - SearchDisplay Controller 没有显示我的搜索结果

Question

我正在尝试制作一个像 iPhone 联系人模块一样的联系人 TableView 。我有一个按字母顺序排序的表格 View ，带有 header sections (A-B-C-...)。现在我想搜索这个 tableview。搜索后，我应该只有一个部分包含所有搜索结果。

我遇到的问题是它一直显示“No results”。但是当我查看保存我的搜索结果的数组时，它包含正确的值。

现在是代码。

我的CellForRowAtIndexPath

- (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *kCellID = @"cellID";

    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:kCellID];
    if (cell == nil)
    {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:kCellID];
        cell.accessoryType = UITableViewCellAccessoryDisclosureIndicator;
    }

    if (tableView == self.searchDisplayController.searchResultsTableView){
        NSLog(@"search tableview");

        Contact *contact = [self.filteredListContent objectAtIndex:indexPath.row];

        NSString *text = [NSString stringWithFormat:@"%@ %@",contact.name,contact.firstName];
        NSLog(@"CellForRowAtIndexPath contact text is %@",text);
        cell.textLabel.text = text;


        [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];


    }else{
        NSLog(@"standaard tableview");
    NSString *alphabet = [firstIndex objectAtIndex:[indexPath section]];

    //---get all states beginning with the letter---
    NSPredicate *predicate =
    [NSPredicate predicateWithFormat:@"SELF.name beginswith[c] %@",alphabet];
    NSArray *contacts = [listContent filteredArrayUsingPredicate:predicate];
    Contact *contact = [contacts objectAtIndex:indexPath.row];

    NSString *text = [NSString stringWithFormat:@"%@ %@",contact.name,contact.firstName];
    cell.textLabel.text = text;


       [cell setAccessoryType:UITableViewCellAccessoryDisclosureIndicator];
    }

    return cell;

}

问题来了。当我在 IF 中使用此 self.searchDisplayController.isActive 并查看此日志 NSLog(@"CellForRowAtIndexPath contact text is %@",text) 时，它给出我是上下文的正确名称。但是当我将 if 更改为此时。 tableView == self.searchDisplayController.searchResultsTableView 然后它总是进入 ELSE 部分。

我的filterContentForSearchText

   - (void)filterContentForSearchText:(NSString*)searchText scope:(NSString*)scope
    {
        NSLog(@"filterContentForSearchText called");
        /*
         Update the filtered array based on the search text and scope.
         */

        [self.filteredListContent removeAllObjects]; // First clear the filtered array.

        /*
         Search the main list for products whose type matches the scope (if selected) and whose name matches searchText; add items that match to the filtered array.
         */
        for (Contact *contact in listContent)
        {
            NSString *searchString = [NSString stringWithFormat:@"%@ %@",contact.name,contact.firstName];
            NSRange range = [searchString rangeOfString:searchText options:NSCaseInsensitiveSearch];
            if (range.location != NSNotFound) {
                [self.filteredListContent addObject:contact];
                [self.searchDisplayController.searchResultsTableView reloadData];
            }
        }
        NSLog(@"filterd list: %@",[self.filteredListContent valueForKey:@"name"]);

        [self.tableView reloadData];

    }

此筛选列表中填满了正确的搜索结果。

编辑 Storyboard截图

编辑搜索委托(delegate)方法

#pragma mark - UISearchDisplayController Delegate Methods
-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString {
    // Tells the table data source to reload when text changes
    [self filterContentForSearchText:searchString scope:
     [[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];

    [self filterContentForSearchText:searchString scope:
     [[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];

    // Return YES to cause the search result table view to be reloaded.
    return YES;
}

-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchScope:(NSInteger)searchOption {
    // Tells the table data source to reload when scope bar selection changes
     [self filterContentForSearchText:self.searchDisplayController.searchBar.text scope:
     [[self.searchDisplayController.searchBar scopeButtonTitles] objectAtIndex:searchOption]];
    // Return YES to cause the search result table view to be reloaded.
    return YES;
}

Answer 1

尝试创建一个新的引用 socket 连接到您的联系人 TableView Controller 。

当我在一个 View Controller 中放置两个搜索显示 Controller 时。只有一个搜索显示有效。好的有这个 Outlet 连接。看我的post .