title: How to delete the old lines of a TextView
body: <p>I'm developping an app which constantly needs to show the results to the user in a TextView like some sort of log.</p>
  
  <p>The app works nicely and it shows the results in the TextView but as long as it keeps running and adding lines the app gets slower and crashes because of the character length of the TextView.</p>
  
  <p>I would like to know if the android API provides any way to force a TexView to automatically delete the oldest lines that were introduced in order to make room for the new ones.</p>