ArrayAdapter Illustration

item.xml

<?xml version="1.0" encoding="utf-8"?>
<LinearLayout
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content">
  <TextView
      android:id="@+id/counter"
      android:layout_width="0dp"
      android:layout_height="wrap_content"
      android:layout_weight="1"
      android:gravity="center"
      android:layout_gravity="center_vertical" />
  <Button
      android:id="@+id/down"
      android:text="-"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="center_vertical" />
  <Button
      android:id="@+id/up"
      android:text="+"
      android:layout_width="wrap_content"
      android:layout_height="wrap_content"
      android:layout_gravity="center_vertical" />
</LinearLayout>

main.xml

<?xml version="1.0" encoding="utf-8"?>
<ListView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:id="@+id/list"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

MainActivity.java

package com.gmail.altakey.count;

import android.app.Activity;
import android.content.Context;
import android.os.Bundle;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;

public class MainActivity extends Activity {

    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        final ListView lv = (ListView)findViewById(R.id.list);
        lv.setAdapter(new AdapterBuilder(this).build());
    }

    private static class AdapterBuilder {
        private Context mContext;

        public AdapterBuilder(final Context context) {
            mContext = context;
        }

        public ArrayAdapter<Integer> build() {
            final Integer[] data = new Integer[] {
                0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0,0
            };
            return new ArrayAdapter(mContext, R.layout.item, R.id.counter, data) {
                @Override
                public View getView(final int position, View convertView, ViewGroup parent) {
                    final View v = super.getView(position, convertView, parent);
                    final TextView counter = (TextView)v.findViewById(R.id.counter);
                    v.findViewById(R.id.up).setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(final View v) {
                            counter.setText(String.valueOf(++data[position]));
                        }
                    });
                    v.findViewById(R.id.down).setOnClickListener(new View.OnClickListener() {
                        @Override
                        public void onClick(final View v) {
                            counter.setText(String.valueOf(--data[position]));
                        }
                    });
                    return v;
                }
            };
        }
    }
}