title: R.java was modified manually! Reverting to generated version
body: <p>I added one xml file in layout. After that this error is coming. But the problem is I haven't touched R.java file. 
  Now in my new activity i m going to set its content view as my newly created xml file, but when i m doing R.layout., the newly created xml is not coming in suggestion. Do anybody have any idea how to correct this.
  I have cleaned my project several times but it is not working.</p>