INVALID FILE NAME: MUST CONTAIN ONLY [a-z0-9_.] Android Eclipse Error

If you find this error message on your Android eclipse Console, this is because you have a resource XML file that has an invalid file name, you can only have alphabets a-z (i.e. Lowercase) and numbers 0-9 and dot (.) or underscores (_).

So if you have an XML file with the below file names they are invalid,

1. Button_layout.xml => Cannot have Capital Alphabets

2. login-form.xml => Cannot have - symbol only _ allowed

3. FileName.xml => Cannot have Capital Alphabets