ContactsListAdapter.java

package com.ifupdown.odin.adapters;

import android.content.Context;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.util.SparseBooleanArray;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.CheckBox;
import android.widget.CompoundButton;
import android.widget.TextView;

import com.ifupdown.odin.R;
import com.ifupdown.odin.models.Contact;

import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

/**
 * Created by ryanrampersad on 11/13/14.
 */
public class ContactsListAdapter extends RecyclerView.Adapter<ContactsListAdapter.ViewHolder> {

    public static final String TAG = "ContactsListAdapter";

    public class ViewHolder extends RecyclerView.ViewHolder {

        int index;

        TextView mTextViewName;
        CheckBox mCheckBox;

        String mName;

        public ViewHolder(View v) {
            super(v);
            mTextViewName = (TextView)v.findViewById(R.id.contact_list_item_name);
            mCheckBox = (CheckBox)v.findViewById(R.id.contact_list_item_checkbox);

            mCheckBox.setChecked( mSelectedItems.get(index, false) );

            mTextViewName.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
//                    Log.d(TAG, mName + " was clicked");
                    mCheckBox.performClick();
                }
            });

            mCheckBox.setOnClickListener(new View.OnClickListener() {
                @Override
                public void onClick(View v) {
//                    Log.d(TAG, mName + " was clicked");
                }
            });

            mCheckBox.setOnCheckedChangeListener(new CompoundButton.OnCheckedChangeListener() {
                @Override
                public void onCheckedChanged(CompoundButton buttonView, boolean isChecked) {
                    Log.d(TAG, mName + " was changed to " + (isChecked ? "on" : "off")  );

                    if ( isChecked ) {
                        mSelectedItems.put(index, true);
                    } else {
                        mSelectedItems.delete(index);
                    }

                    Log.d(TAG, mSelectedItems.toString());

                }
            });

        }


    }

    private SparseBooleanArray mSelectedItems = new SparseBooleanArray();
    private List<Contact> mContacts;
    private List<String> mPeople;
    private Context mContext;

    public ContactsListAdapter(Context context, List<Contact> items) {
        this.mContext = context;

        // this represents the list of actual contacts in this group already
        this.mContacts = items;

        // load the contacts list into this array
        // in real life, this not what we would or should be doing though
        this.mPeople = new ArrayList<String>(Arrays.asList(context.getResources().getStringArray(R.array.contacts)));
//        mDB = new DatabaseHelper(context);



    }

    @Override
    public ContactsListAdapter.ViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
        View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.item_contact_list, viewGroup, false);

        ContactsListAdapter.ViewHolder vh = new ContactsListAdapter.ViewHolder(v);
        return vh;
    }

    @Override
    public void onBindViewHolder(ContactsListAdapter.ViewHolder viewHolder, int i) {

        // TODO: check the checkbox if the contact is in this group

        viewHolder.index = i;

        viewHolder.mName = mPeople.get(i);

        viewHolder.mTextViewName.setText(mPeople.get(i));
        viewHolder.mCheckBox.setChecked( mSelectedItems.get(i, false) );


//        Log.d(TAG, "Contact = " + viewHolder.mName);

    }

    @Override
    public int getItemCount() {
        return mPeople.size();
    }
}