How to fix Eclipse validation error “No grammar constraints detected for the document”?

Question

Eclipse 3.5.2 is throwing an XML schema warning message:

No grammar constraints (DTD or XML schema) detected for the document.

The applica

Answer 1

Add this to your xml file's very beginning:

Change RelativeLayout to your defined root layout ,then find xml file in left side, in layout folder, right click and select Validate.