No line numbers in Eclipse or Android Studio XML editor

Question

When editing XML files in the editor for Eclipse, line numbers are not displayed.

Use case:

I create a layout with many views, one of these lacks android:layout_

Answer 1

To make the line numbers show always in your android studio, follow this, go to: File > Settings > Editor > General > Appearance and then check the "Show line numbers" box especially if you are using AS 2.1.1. Picture here below...How to show line numbers in Android Studio 2.1.1