title: How to remove or edit title bar when nativescript app runs on android platform
body: <p>i've tried in every way to call the requestWindowFeature method, first inside a page script (but raised a very nice error), second on app js, working inside application.launchEvent closure:</p>
  
  <pre>
  
      var application = require("application");
      application.mainModule = "main-page";
      application.cssFile = "./app.css";
  
      application.on(application.launchEvent, function (args) {
          if (args.android) {
          // How to work with android activity in this closure? 
          } 
      });
  
  </pre>
  
  <p>application.start();</p>
  
  <p>I was not able to get an android activity instance in order to hide the default title bar.</p>
  
  <p>Assuming that the "launchEvent" event it is assimilable to "onCreate" event, is there a way to get the android activity in this context? Or is necessary to assume that it isn't the proper way in order to achieve the goal? </p>