title: In Android, how to create EditText of fixed width?
body: <p>I would like to create an EditText which accepts only numbers, has a  maximum of 4 numbers, and is never narrower than it would be if filled with 4 numbers (does not shrink when empty, or have to expand to accommodate 4 numbers, so it's fixed.)</p>
  
  <p>The first 2 are accomplished with: android:inputType="number" and android:maxLength="4".  </p>
  
  <p>How can I set the minimum length?</p>