Graphical layout missing for Layout XML Files

Question

I installed new SDK for android development. Now when I open Layout XML file for editing..its not showing Graphical Layout tab along with source. Its showing Design and Sour

Answer 1

Another "fix" is to copy everything in the .xml to clipboard, then delete everything in the file, add some item in graphical view(should work now), then go back to ext editor and paste your old layout.

sounds stupid, but works sometimes.