GridView上拉自动加载并刷新

[{"title":"（ 370 个子文件 3.8MB ） GridView上拉自动加载并刷新","children":[{"title":"classes.dex <span style='color:#111;'> 637.56KB </span>","children":null,"spread":false},{"title":"icon_setting.png <span style='color:#111;'> 2.25KB </span>","children":null,"spread":false},{"title":"img_subtitle_graduation_slide.png <span style='color:#111;'> 83B </span>","children":null,"spread":false},{"title":"film_cover_loading.png <span style='color:#111;'> 8.47KB </span>","children":null,"spread":false},{"title":"img_icon_setting_function.png <span style='color:#111;'> 642B </span>","children":null,"spread":false},{"title":"......","children":null,"spread":false},{"title":"<span style='color:steelblue;'>文件过多，未全部展示</span>","children":null,"spread":false}],"spread":true}]