A Few Good Resources- Use onSaveInstanceState() to save the current contents of the details
form, and restore those contents in onCreate() if an instance state is
available (e.g., after the screen was rotated). Note how this does not
cover the list – you will still lose all existing restaurants on arotation event. However, in a later tutorial, we will move that data
to the database, which will solve that problem.Further Reading..........................................................................................
You can learn more about resource sets, particularly with respect to UI
impacts, in the "Working with Resources" chapter of The Busy Coder's
Guide to Android Development.
You will also find "Table 2" in the Alternate Resources section of the
Android developer guide to be of great use for determining the priority of
different resource set suffixes.