<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
        xmlns:android="http://schemas.android.com/apk/res/android"
        android:layout_width="match_parent"
        android:layout_height="match_parent"
        android:id="@+id/drawerLayout">
    <FrameLayout
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:id="@+id/contentContainer">
        <TextView
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="content txt"
                android:layout_gravity="center"
                android:textSize="30sp"
                android:id="@+id/contentTxt"/>
        <Button
                android:layout_width="wrap_content"
                android:layout_height="wrap_content"
                android:text="xXx"
                android:id="@+id/btn"/>
    </FrameLayout >
    <ListView
            android:layout_width="240dp"
            android:layout_height="match_parent"
            android:id="@+id/drawerList"/>
</android.support.v4.widget.DrawerLayout>

////////////////////////////////////////////////////////////////////////////////////////////////////////////////

import android.support.v4.widget.DrawerLayout;
import android.support.v7.app.AppCompatActivity;
import android.os.Bundle;
import android.view.View;
import android.widget.*;
import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;

public class MainActivity extends AppCompatActivity {
     ListView drawerList;
     DrawerLayout drawerLayout;
     TextView contentTxt;
     private class ItemClickListener implements AdapterView.OnItemClickListener {
         @Override
         public void onItemClick(AdapterView<?> parent,View view,int position,long id) {
             StringBuilder sb= new StringBuilder();
             TextView label= (TextView)view.findViewById(R.id.label);
             TextView n= (TextView)view.findViewById(R.id.n);
             sb.append(label.getText() +"\t"+ n.getText() );
             contentTxt.setText(sb.toString() );
         }
     }
     private class Listener implements View.OnClickListener {
         @Override
         public void onClick(View v) {}
     }

     private void initAdapter() {
         String from[]= {"Label","n"};
         int to[]= {R.id.label,R.id.n};
         String strs[]= {"Молоко", "Сметана", "Хлеб", "Пылесос"};
         String ns[]= {"1", "2", "2", "0"};
         List<HashMap<String,Object> > data= new ArrayList<>();

         for(int i=0; i<strs.length; i++) {
             HashMap<String,Object> map= new HashMap();
             map.put(from[0],strs[i] );
             map.put(from[1],ns[i] );
         }
         SimpleAdapter adapter= new SimpleAdapter(this,data,R.layout.drawer_list_element,from,to);
         drawerList.setAdapter(adapter);
     }

     @Override
     protected void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         setContentView(R.layout.main_layout);

         Button btn= (Button)findViewById(R.id.btn);
         contentTxt= (TextView)findViewById(R.id.contentTxt);
         drawerList= (ListView)findViewById(R.id.drawerList);
         drawerLayout= (DrawerLayout)findViewById(R.id.drawerLayout);

         initAdapter();
         drawerList.setOnItemClickListener(new ItemClickListener());
         btn.setOnClickListener(new Listener() );
     }
 }