title: What's the difference between lineSpacingExtra and lineSpacingMultiplier?
body: <p>I'm adding line spacing in my textview which spans multiple lines.
  What's the difference between <code>android:lineSpacingExtra</code> and <code>android:lineSpacingMultiplier</code>?</p>
  
  <p>lineSpacingExtra with 2dp worked fine for me but I was wondering what the Multiplier does instead?</p>