How to limit the number of boxes checked in ListView
<p>This is the first time I'm developing an Android application so this question might be a no-brainer. 
I want to limit the number of checkboxes selected (i.e., the user should only be able to select a amximum of 2 checkboxes). How do I do this in onCheckedChanged()?</p>

<pre><code>package com.mainak.walkbuddy;

import java.util.List;

import android.app.Activity;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.ArrayAdapter;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;

public class InteractiveArrayAdapter extends ArrayAdapter&lt;Model&gt;
{
    private final List&lt;Model&gt; list;
    private final Activity context;

    public InteractiveArrayAdapter(Activity context, List&lt;Model&gt; list) 
    {
        super(context, R.layout.activity_show_content, list);
        this.context = context;
        this.list = list;
    }

    static class ViewHolder 
    {
        protected TextView text;
        protected CheckBox checkbox;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent)
    {
        View view = null;
        int checkBoxCounter = 0;      
        int checkBoxInitialized = 0; 
        if (convertView == null) 
        {
            LayoutInflater inflator = context.getLayoutInflater();
            view = inflator.inflate(R.layout.activity_show_content, null);
            final ViewHolder viewHolder = new ViewHolder();
            viewHolder.text = (TextView) view.findViewById(R.id.label);
            viewHolder.checkbox = (CheckBox) view.findViewById(R.id.check);
            viewHolder.checkbox.setOnCheckedChangeListener(
                    new CompoundButton.OnCheckedChangeListener() 
                    {
                        @Override
                        public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) 
                        {
                            Model element = (Model) viewHolder.checkbox.getTag();
                            element.setSelected(buttonView.isChecked());
                        }
                    }
                    );
            view.setTag(viewHolder);
            viewHolder.checkbox.setTag(list.get(position));
        } 
        else
        {
            view = convertView;
            ((ViewHolder) view.getTag()).checkbox.setTag(list.get(position));
        }
        ViewHolder holder = (ViewHolder) view.getTag();
        holder.text.setText(list.get(position).getName());
        holder.checkbox.setChecked(list.get(position).isSelected());
        return view;
    }
} 
</code></pre>
