title: Android: data on status bar
body: <p>I want to develop an application that shows data in the status bar, for example the current internet speed. I want to update it every second.</p>
  
  <p>I was trying to use Notifications, but i couldnt find a way to show numbers without an icon and to update it.</p>
  
  <p>is it possible to do what i want? How can i achieve it? Which class shoud i use?
  Do you hace a source code example?</p>
  
  <p>Thanks in advance.</p>