Making an EditText field accept only letters and white spaces in Android

Question

I have an EditText field in my project which stands for the full name of the person.So I want only letters and spaces to be allowed in it.So I tried the following in the

Answer 1

this worked for me (whitespace in the middle, not at the end) android:digits="abcdefghijklmnopqrstuvwxyz ABCDEFGHIJKLMNOPQRSTUVWXYZ"