单个帖子类型的分页不起作用

Question

我在单个帖子的上一个链接分页中遇到问题。我总共有12个帖子，在接下来和之前它每次只显示两个帖子。这是我的代码。

 <?php
            global $wpdb;
            $args = array(
                'category ' => $catid,
                'order' => 'DESC',
                'posts_per_page'=>1,
                'paged' => $paged

                ); 

                query_posts($args);
                $total_posts = (int) $wp_query->found_posts;
                $prev_post = get_previous_post(); 
                $prevID = $prev_post->ID ;
                $next_post = get_next_post();
                $nextID = $next_post->ID ;
                $all_posts = $all_post_query->post_count;
                ?>
                <div class="paginate">                  
                            <?php $prev_post = get_previous_post();
                            if (!empty( $prev_post ))

                            { 
                                                                echo '<span  class="glyphicon-chevron-left">'; previous_post('%','  Previous', 'no');   echo '</span>'; ?>  
                                                          <?php } else { ?>
                                                         <?php echo 'Previous'; } ;?>



                            <?php                      if(!empty($nextID))   { ?>
           <?php  echo '<span class="glyphicon-chevron-right">'; next_post('%', 'Next', 'no'); echo '</span>'; ?>
 <?php } else { ?>
 <a class="next"><?php  echo 'Next'; } ; ?></a>

</div>          
</div>