That article goes as far as creating list structures for drill-down navigation, similar to the iPhone's native Mail application.
该文章介绍了如何创建向下展开的列表结构，类似于iPhone的原生邮件应用程序。
Go menu: easily create a drop-down navigation menus.
转到菜单：轻松地创建一个下拉导航菜单。
Go menu: easily create a drop-down navigation menus.
转到菜单：轻松地创建一个下拉导航菜单。
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