What's the best way to do

ok, all my code

app.mc

import Toybox.Application;
import Toybox.Lang;
import Toybox.WatchUi;
import Toybox.ActivityRecording;
import Toybox.Application.Storage;
import Toybox.Position;

class teste4App extends Application.AppBase {

     private var _recordSampleView as RecordSampleView?;

    function initialize() {
        AppBase.initialize();
    }

    // onStart() is called on application start up
    function onStart(state as Dictionary?) as Void {
//EXPLORAR MELHOR, SE NAO TER POSICAO QUER DIZER QUE NÃO ESTÁ NENHUMA SESSÃO A GRAVAR... OU SE É O CONTRARIO...
        System.println("gpsOn, has position: " + (Toybox has :Postition)); 
        if( Toybox has :Postition ) { 
        System.println("Toybox has :Postition"); 
        Position.enableLocationEvents(Position.LOCATION_CONTINUOUS, method(:onPosition)); 
        } else { System.println("não temos posição GPS");}

    }

    // onStop() is called when your application is exiting
    function onStop(state as Dictionary?) as Void {
        var recordSampleView = _recordSampleView;
        if (recordSampleView != null) {
            recordSampleView.stopRecording();
        }
        Position.enableLocationEvents(Position.LOCATION_DISABLE, method(:onPosition));
        System.println("DESLIGOU O GPS");
    }

    public function onPosition(info as Info) as Void {
        System.println("segundo a segundo");
    }

    // Return the initial view of your application here
    function getInitialView() as Array<Views or InputDelegates>? {
        
       return [ new teste4View(), new teste4Delegate() ] as Array<Views or InputDelegates>;

       /*
            var view = new teste4View(); 
            var delegate = new teste4Delegate(); 
            return [ new teste4View(), new teste4Delegate(view) ]; 
        */

    }

    function getApp() as teste4App {
        return Application.getApp() as teste4App;
    }
    

}

delegate.mc

import Toybox.Lang;
import Toybox.WatchUi;

using Toybox.Graphics;


class teste4Delegate extends WatchUi.BehaviorDelegate {

    function initialize() {
        BehaviorDelegate.initialize();
    }

/*

    function onBack() {

        WatchUi.popView(SLIDE_IMMEDIATE);

    }
*/
    function onMenu() as Boolean {

        var menu = new WatchUi.Menu2({:title=>"Wind Surf"});
          
          menu.addItem(new WatchUi.IconMenuItem("Sails", null, "item_sail", new CustomIcon(Rez.Drawables.LauncherIcon), null));
          menu.addItem(new WatchUi.IconMenuItem("Boards", null, "item_board", new CustomIcon(Rez.Drawables.LauncherIcon), null));
          
        WatchUi.pushView(menu, new teste4Menu2Delegate(), WatchUi.SLIDE_IMMEDIATE);

        return true;
    }

/*
    function onKey(evt) { 
    //getKey dá o botão que foi carregado, 4 é o botão começar, o vermelho
    if (evt.getKey() == 4) { System.println("Vamos começar a gravar a sessão"); }

    // return false é como se fosse o elseif, se ele não entrar no if retorna falso
    return false;

    } 
*/

}

class CustomIcon extends WatchUi.Drawable {
    var bitmapResource = null;

    public function initialize(resourceId) {
        Drawable.initialize({});
        bitmapResource = WatchUi.loadResource(resourceId);
    }

    public function draw(dc as Dc) as Void {
        dc.setColor(Graphics.COLOR_TRANSPARENT, Graphics.COLOR_TRANSPARENT);
        dc.clear();
        dc.drawBitmap(5, 20, bitmapResource);
    }

   
    
}

menudelegate.mc

import Toybox.Lang;
import Toybox.System;
import Toybox.WatchUi;

class teste4Menu2Delegate extends WatchUi.Menu2InputDelegate {

    function initialize() {
        Menu2InputDelegate.initialize();
    }

    function onSelect(item) {

        if (item.getId().equals("item_sail")) { 

            System.println("VELAS");

            //CREATE SUB MENU
            var menu_sub = new WatchUi.Menu2({:title=>"Sails Size"});

            menu_sub.addItem(new WatchUi.MenuItem("7.8",null,"sail1",null));
            menu_sub.addItem(new WatchUi.MenuItem("7.1", null,"sail2", null));
            menu_sub.addItem(new WatchUi.MenuItem("6", null,"sail3", null));

            WatchUi.pushView(menu_sub, new teste4Menu2Delegate(), WatchUi.SLIDE_IMMEDIATE);

            return true;

        } 
            else if (item.getId().equals("sail1")) { System.println("you chose sail 7.8"); }
            else if (item.getId().equals("sail2")) { System.println("you chose sail 7.1"); }
            else if (item.getId().equals("sail3")) { System.println("you chose sail 6"); }


        return false;

    }


    /*
        function onMenuItem(item as Symbol) as Void {


        }
    */


}

view.mc