Convert String to Drawable

Question

I want to raise a notification showing an icon in the status bar - so far so good, but actually I would like this icon to be a 3 character String.

So my question is: Is

Answer 1

   public Drawable getDrawable(String bitmapUrl) {
      try {
        URL url = new URL(bitmapUrl);
        Drawable d =new BitmapDrawable(BitmapFactory.decodeStream(url.openConnection().getInputStream()));
        return d; 
      }
      catch(Exception ex) {return null;}
    }