I just got problem after updating my eclipse and ADT to version 14.x
When I looking for the solution, i found a nice website. Here we go, written from that site:
Specify the Android Layout Editor as the default for Android XML files under Preferences -> General- >Editors->File Associations.
1. If Android layout editor is missing Add Android Layout Editor and make it default.
2. Close eclipse and restart. Otherwise this will not work.
Source : here
Hope you can solve your problem
