Compiled and Uncompiled Android Resources
Description
Android supports resources primarily through two types of files: XML files and raw files. The raw files might be images, audio, and video.
Some of the XML file gets compiled into binary format, and the other is copied as-is to the device.
For example, string resource XML files and layout resource XML files are compiled into
binary format before becoming part of the installable package.
These XML files have predefined formats where XML nodes can be translated to IDs.
You can compile your own strutured XML to binary formats and use the power of localization.
To do this, you can place these XML files in the /res/xml/ subdirectory.
In this case, you would use Android-supplied XML readers to read the XML nodes.
But if you place files, including XML files, in the /res/raw/ directory instead,
they don't get compiled into binary format.
However, because it's a resource, Android generates an ID through R.java.
The resource type for raw files is raw and
we can access these file identities through R.raw.some-filename-minus-extension.
But, you must use explicit stream-based APIs to read these files.
Audio and video files fall into this category.
Since the raw directory is part of the /res/* hierarchy, even these raw audio and
video files can use localization and ID generation like all other resources.