title: Placeholder text (design process only) in Android layout?
body: <p>Is it possible to create placeholder text that is only visible during the layout design process in Android Studio?</p>
  
  <p>For example, say I have 2 TextViews in a linear layout that are going to be dynamically populated. During the design phase, I use placeholder text to ensure I get padding and such correct. I often forget to remove placeholder text, so during loading of the new data, the old data will appear for a split second... looks tacky.</p>
  
  <p>It would be cool if there was a field similar to <code>android:placeholderText="This is placeholder text"</code> that would only display in the preview. There isn't such a thing that I've happened to have missed is there?</p>