title: Prevent the EXIT of a kivy App on Android with the ESCAPE ARROW
body: <p>I would like to prevent the EXIT of a kivy App on Android with the ESCAPE ARROW.</p>
  
  <p>When I write <code>exit_on_escape = 0</code> in the <code>config.ini</code> file, it does not change anything (however on WINDOWS 8 with the <kbd>Esc</kbd> key this works).</p>
  
  <p>I have also tried unsuccessfully to intercept the <code>on_request_close</code>.</p>
  
  <pre><code>import kivy
  kivy.require('1.0.8')
  
  from kivy.core.window import WindowBase
  from kivy.uix.widget import Widget 
  from kivy.app import App
  from kivy.clock import Clock
  
  class Test(Widget):
  
      def __init__(self, **kwargs):
          super(Test,self).__init__(**kwargs)     
  
  class TestApp(App):
      def build(self):
  
      Clock.schedule_once(self.my_callback, 0)
      return Test()
  
  def my_callback(self,*dt):
      print("mycallback")
      win=self._app_window
      win.fullscreen=1 #OK 
      win.bind(on_request_close=self.alwaystrue)
  
  def alwaystrue(*largs, **kwargs) :
      print("alwaystrue")#never happens ...
      return True
  if __name__ == '__main__':
      TestApp().run()
  </code></pre>