MainActivity.java

package com.iblancasa.comedoresUGR;

import android.content.Context;
import android.content.Intent;
import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.ActionBarActivity;
import android.os.Bundle;
import android.support.v7.app.ActionBarDrawerToggle;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.support.v7.widget.Toolbar;
import android.view.Menu;
import android.view.MenuItem;
import android.view.View;
import android.widget.TextView;

import java.util.ArrayList;


public class MainActivity extends ActionBarActivity {

    int mostrado=0;

    //Títulos para el Drawer
    String TITLES[] = {"Inicio","Menú semanal"};

    //Iconos asociados
    int ICONS[] = {R.drawable.inicio,R.drawable.semana};


    //Nombre a mostrar
    String NAME = "Israel Blancas";

    //Email a mostrar
    String EMAIL = "iblancasa [@] gmail.com";

    //Imagen a mostrar
    int PROFILE = R.drawable.user;


    //Toolbar
    private Toolbar toolbar;

    //Declaración del RecyclerView
    RecyclerView RecyclerView;

    //Adapter para RecyclerView
    RecyclerView.Adapter Adapter;

    //Layout manager
    RecyclerView.LayoutManager LayoutManager;

    //Drawer Layout
    DrawerLayout Drawer;

    //Action Bar Drawer Toggle
    ActionBarDrawerToggle mDrawerToggle;

    com.iblancasa.comedoresUGR.Menu menu;

    // RecyclerView menu
    RecyclerView recyclerMenuSemana;


    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.activity_main);

        TextView p1,p2,p3;
        p1 = (TextView) findViewById(R.id.primerPlato);
        p2 = (TextView) findViewById(R.id.segundoPlato);
        p3 = (TextView) findViewById(R.id.tercerPlato);


        menu = new com.iblancasa.comedoresUGR.Menu(p1,p2,p3);

        createLayout();
    }



    private void createLayout(){
        final Context contexto = this;

        //Añadido el toolbar
        toolbar = (Toolbar) findViewById(R.id.tool_bar);
        setSupportActionBar(toolbar);

        RecyclerView = (RecyclerView) findViewById(R.id.RecyclerView);

        RecyclerView.setHasFixedSize(true);//Tamaño fijo

        LayoutManager = new LinearLayoutManager(this);//Layout Manager (linear)

        RecyclerView.setLayoutManager(LayoutManager);//Añadiendo el layout manager

        Drawer = (DrawerLayout) findViewById(R.id.DrawerLayout);

        mDrawerToggle = new ActionBarDrawerToggle(this,Drawer,toolbar,0,0){

            @Override
            public void onDrawerOpened(View drawerView) {
                super.onDrawerOpened(drawerView);

            }

            @Override
            public void onDrawerClosed(View drawerView) {
                super.onDrawerClosed(drawerView);

                if(mostrado!=AdapterDrawer.pulsado) {
                    switch (AdapterDrawer.pulsado) {
                        case 2: {
                            setContentView(R.layout.activity_semana);
                            recyclerMenuSemana = (RecyclerView) findViewById(R.id.recycler_plato);
                            recyclerMenuSemana.setHasFixedSize(true);
                            final LinearLayoutManager mLayoutManager = new LinearLayoutManager(contexto);
                            recyclerMenuSemana.setLayoutManager(mLayoutManager);

                            final RecyclerView.ItemDecoration itemDecoration = new Divider(contexto);
                            recyclerMenuSemana.addItemDecoration(itemDecoration);

                            final Adapter recyclerAdapterMenu = new Adapter(menu.parse.getSemana(), contexto);
                            recyclerMenuSemana.setAdapter(recyclerAdapterMenu);
                            break;
                        }
                        default:
                            setContentView(R.layout.activity_main);

                            TextView p1, p2, p3;
                            p1 = (TextView) findViewById(R.id.primerPlato);
                            p2 = (TextView) findViewById(R.id.segundoPlato);
                            p3 = (TextView) findViewById(R.id.tercerPlato);

                            Dia hoy = menu.getHoy();
                            ArrayList<String> comida = hoy.getComida();

                            if(comida.size()>1){
                                p1.setText(comida.get(0));
                                p2.setText(comida.get(1));
                                p3.setText(comida.get(2));
                            }
                            else{
                                p1.setText(comida.get(0));
                                p2.setText("");
                                p3.setText("");
                            }


                            break;

                    }

                    createLayout();
                }



            }
        };

        Drawer.setDrawerListener(mDrawerToggle);

        Adapter = new AdapterDrawer(TITLES,ICONS,this,Drawer);

        RecyclerView.setAdapter(Adapter);

        mDrawerToggle.syncState();
    }


    @Override
    public boolean onCreateOptionsMenu(Menu menu) {
        //Añadiendo items
        getMenuInflater().inflate(R.menu.menu_main, menu);
        return true;
    }

    @Override
    public boolean onOptionsItemSelected(MenuItem item) {
        int id = item.getItemId();
        return super.onOptionsItemSelected(item);
    }
}