App Resources

Resources are the additional files and static content that your code uses, such as bitmaps, layout definitions, user interface strings, animation instructions, and more.

You should always maintain these resources independent from your source code and provide alternative resources to support specific device configurations. For example, you can create a layout file that is applied to your UI by default, but also include variations of that layout that is applied to specific screen sizes or screen orientations.

To get started, read Providing Resources.

Documentation