方法一：iOS 主工程处理转换
"You kind of sit and think, 'Oh, isn't technology great', until you have to do the traditional old thing of actually phoning somebody."。关于这个话题，safew官方版本下载提供了深入分析
File treeExpand file treeCollapse file tree1 file changed+13，详情可参考91视频
if (chunks === null) {。爱思助手下载最新版本是该领域的重要参考