title: Can I use variables in XML for Android?
body: <p>Instead of using this following line for each textview:</p>
  
  <pre><code>android:textSize="40sp"
  </code></pre>
  
  <p>Am I able to replace 40sp with a variable?</p>
  
  <p>As a side question, I've been recommended to use SP units as it goes by user defined settings. Is this a best practice?</p>