所有应用程序和所有组件都在XML文件中定义其用户界面的布局。

All applications and all components define the layout of their user interface in an XML file.

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在JSON文件中定义布局属性。

Define the layout attributes in a JSON file.

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如同应用程序布局一样。你也可以在一个XML文件中定义你菜单中的项目。

And just like your application layout, you have the option to declare the items for you menu in an XML file.

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