Android Studio not identifying xml file as layout file
Found the source of the problem - it was in the config files Android Studio creates in your home directory: ~/.AndroidStudioPreview2.0. In my case, it was ~/.AndroidStudioPreview2.0/config/options/filetypes.xml
<application> <component name="FileTypeManager" version="16"> <ignoreFiles list="*.hprof;*.pyc;*.pyo;*.rbc;*~;.DS_Store;.git;.hg;.svn;CVS;RCS;SCCS;__pycache__;_svn;rcs;" /> <extensionMap> <mapping pattern="drawer_list_item.xml" type="PLAIN_TEXT" /> </extensionMap> </component> </application>Therefore, it seems like I somehow made Android Studio index that file name pattern drawer_list_item.xml as plain text...Removing that mapping entry from the file solves the problem: <mapping pattern="drawer_list_item.xml" type="PLAIN_TEXT" />
Preferences -> File Types and remove the Registered Pattern
I simply had to right click on the file in the Project view and select 'Mark as XML' in Android Studio 2.2.x
