Question

there is this R.layout class in the standard library, but if I create my own files with xml editor in R.layout directory, they’ll be all added to R-file and found from the R-file? This is a bit unclear to me how these go together.

http://developer.android.com/reference/android/R.layout.html

Answer 1

All the factory android R references are stored in a different place than yours. For example, in your java code, you’ll access to your references using this:

R.layout.yourlayout

But the factory R references are accessed through:

android.R.layout.factorylayout

Same goes for xml. Your drawables should be:

@drawable/yourdrawable

And the factory references:

@android:drawable/factorydrawable

So, to sum up, R items are stored independently