无法从Dropbox中搜索文件内的文件

Question

我正在尝试使用搜索显示控制器搜索任何文件。但是文件内部文件没有显示在tableview中。这意味着不会检索子文件夹/文件。

获取文件和文件夹我正在使用此代码。我不明白为什么子文件没有显示。

  if(metadata.isDirectory)
    {   
   marrFiles = [[NSMutableArray alloc]init];
    for (DBMetadata *dbObject in metadata.contents)
    {
        if (!dbObject.isDirectory)
        {
            NSString *fileName = [dbObject.path lastPathComponent];
            NSMutableDictionary *dict = [NSMutableDictionary dictionary];

            NSString *stringSize = [NSString stringWithFormat:@"%@",[dbObject humanReadableSize]];
            NSDate *modificationDate = [dbObject lastModifiedDate];
            NSString *dateString = [dateFormatter stringFromDate:modificationDate];
            dateString = [dateString createdTimeString];
            [dict setValue:fileName forKey:@"File"];

            NSString *stringInfo = [NSString stringWithFormat:@"%@ %@",stringSize,dateString];
            [dict setValue:stringInfo forKey:@"Size"];
            [dict setValue:@"No" forKey:@"isSelected"];
            [marrFiles addObject:dict];
        }
        else
        {
            NSString *fileName = [dbObject.path lastPathComponent];
            NSMutableDictionary *dict = [NSMutableDictionary dictionary];

            [dict setValue:@"No" forKey:@"isSelected"];
            [dict setValue:fileName forKey:[NSString stringWithFormat:@"File"]];
            [marrFiles addObject:dict];
        }
    }
    [tblDropbox reloadData];
}
else
{
    NSMutableArray *listFile=[NSMutableArray array];
    for (DBMetadata *file in metadata.contents) {
        [listFile addObject:file.filename];
    }
}
[MBProgressHUD hideHUDForView:self.view animated:YES];