def set_duration(self, duration):
        """ Android for whatever stupid reason doesn't let you set the time
        it only allows 1-long or 0-short. So we have to repeatedly call show
        until the duration expires, hence this method does nothing see 
        `set_show`.
        
        """
        if duration == 0:
            self.widget.setDuration(-2) #: Infinite
        else:
            self.widget.setDuration(0)