Modifying the UI by adding an icon to the action bar and adding drop-down menu choices.

通过在操作栏添加一个新图标和下拉菜单选项而修改ui。

youdao

Modifying the UI by adding an icon to the action bar and adding drop-down menu choices.

通过在操作栏添加一个新图标和下拉菜单选项而修改ui。

youdao