I found a solution even if it's not trough Eclipse IDE.
I just remove manually the line in lint.xml.
<?xml version="1.0" encoding="UTF-8"?>
<lint>
<issue id="SelectableText">
<ignore path="res\layout\my_activity.xml" />
</issue>
<issue id="TooManyViews">
<ignore path="res\layout\my_other_activity.xml" />
</issue>
</lint>
For example remove
<ignore path="res\layout\my_activity.xml" />
in order to re enable selectabeText warning in my_activity.xml.
I let the question open in case someone finds a solution trough the Eclipse IDE.