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

Solution For Eclipse:

add to the begining of each problematic XML,

after the xml tag

you can write anything for doctype, but basically it's supposed to be manifest, activity, etc. from what I understand