Question

我正在尝试过滤4个阵列，但我无法使其工作。这是一个使用NSString填充的推送表视图。当我在搜索栏中输入内容时，搜索结果来自1个数组（MARLINS），即使在其他数组中也是如此。我知道问题出在-(void)filtertContentForSearchText:。我错过了什么？

- (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection: (NSInteger)section
{
    if (tableView == self.searchDisplayController.searchResultsTableView)
    {
        return [self.searchResults2 count];
    }
    else
    {
        if ([testName isEqualToString:@"CES"])
            return [self.CES count];

        if ([testName isEqualToString:@"MARLINS"])
            return [self.MARLINS count];

        if ([testName isEqualToString:@"DELTA 2, NAVIGATOR"])
            return [self.DELTA count];

        if ([testName isEqualToString:@"CREW 2002, NAVIGATOR"])
            return [self.CREW count];
    }

    return 0;
}

- (UITableViewCell *)tableView:(UITableView *)tableView  cellForRowAtIndexPath:(NSIndexPath *)indexPath
{
    static NSString *CellIdentifire = @"Cell";
    UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:CellIdentifire];

    if (cell == nil) {
        cell = [[UITableViewCell alloc] initWithStyle:UITableViewCellStyleDefault reuseIdentifier:CellIdentifire];

    }

    if (tableView == self.searchDisplayController.searchResultsTableView)
    {
        cell.textLabel.text = [self.searchResults2 objectAtIndex:indexPath.row];
    }
    else
    {
        if ([testName isEqualToString:@"CES"]) {
            cell.textLabel.text = [self.CES objectAtIndex:indexPath.row];
        }
        else if ([testName isEqualToString:@"MARLINS"]) {
            cell.textLabel.text = [self.MARLINS objectAtIndex:indexPath.row];
        }
        else if ([testName isEqualToString:@"DELTA 2, NAVIGATOR"]) {
            cell.textLabel.text = [self.DELTA objectAtIndex:indexPath.row];
        }
        else if ([testName isEqualToString:@"CREW 2002, NAVIGATOR"]) {
            cell.textLabel.text = [self.CREW objectAtIndex:indexPath.row];
        }
    }
    return cell;
}


#pragma Search Methods

-(void)filtertContentForSearchText:(NSString *)searchText scope:(NSString *)scope
{
    NSPredicate *predicate = [NSPredicate predicateWithFormat:@"SELF contains[c] %@", searchText];

    self.searchResults2 = [ self.MARLINS filteredArrayUsingPredicate:predicate];
    self.searchResults2 = [ self.CES filteredArrayUsingPredicate:predicate];
    self.searchResults2 = [ self.CREW filteredArrayUsingPredicate:predicate];
    self.searchResults2 = [ self.DELTA filteredArrayUsingPredicate:predicate];
}

-(BOOL)searchDisplayController:(UISearchDisplayController *)controller shouldReloadTableForSearchString:(NSString *)searchString
{
    [self filtertContentForSearchText:searchString scope:[[self.searchDisplayController.searchBar scopeButtonTitles]objectAtIndex:[self.searchDisplayController.searchBar selectedScopeButtonIndex]]];
    return YES;
}

@end

Answer 1

（从评论中提取到＆＃39;答案＆＃39;，稍微编辑以便更好地合作）：

您有在filter方法中未使用的scope参数。从shouldReloadTableForSearchString传递一些有用的东西：知道你应该过滤哪个数组。

查看范围变量。如果它的现有值可用于标识要使用的数组，那么至少可以复制if ... else块，类似于cellForIndexPath中的代码，只过滤特定的数组。 / p>

过滤多个数组

1 个答案: