title: Accessing attrs in AttributeSet for custom components
body: <p>I've got a custom component containing two TextViews that have a custom size-setting method on (the two text views are proportional by about a 1:2 ratio). Being that this is a subclass of RelativeLayout, it doesn't have a textSize attribute, but I'm wondering if it is possible to still set the <code>android:textSize</code> attribute in the XML instantiation for this component, and then grab the <code>textSize</code> attribute from the AttributeSet to use with my custom <code>setSize()</code> method in the constructor.</p>
  
  <p>I've seen the technique to do this with custom attributes, but what if I want to grab an attribute that's already in the android lexicon?</p>