AddItemDialogFragment.java

package com.cc.app.fragments;

import android.app.AlertDialog;
import android.app.Dialog;
import android.app.DialogFragment;
import android.content.DialogInterface;
import android.os.Bundle;
import android.view.View;
import android.widget.*;
import com.cc.app.R;
import com.cc.app.db.DatabaseHelper;

/**
 * @author Wes Lanning
 * @version 2013-08-31
 */
public class AddItemDialogFragment extends DialogFragment
    implements DialogInterface.OnShowListener,
    DialogInterface.OnClickListener,
    EditText.OnFocusChangeListener
{
    private ItemInsertedListener listener;
    private View form = null;
    private DatabaseHelper      databaseHelper;

    public AddItemDialogFragment(ItemInsertedListener listener)
    {
        this.listener = listener;
    }

    @Override
    public Dialog onCreateDialog(Bundle savedInstanceState)
    {
        super.onCreateDialog(savedInstanceState);
        databaseHelper = DatabaseHelper.getInstance(getActivity());
        // code omitted
        return ad;
    }

    /**
     * This method will be invoked when a button in the dialog is clicked.
     *
     * @param dialog The dialog that received the click.
     * @param which The button that was clicked (e.g.
     * {@link android.content.DialogInterface#BUTTON1}) or the position
     * of the item clicked.
     */
    @Override
    public void onClick(DialogInterface dialog, int which)
    {
        String item = ((TextView) form.findViewById(R.id.item_text)).getText().toString().trim();
        databaseHelper.addItem(item);
        listener.notifyInsertion(item);
    }

    // some methods ommitted that aren't relevant...
    
    
    /**
     * Listener to tell the fragment that we updated the list
     * item's state changed and this passes back the altered item.
     *
     * Needed so the fragment can then updated it in the database.
     */
    public interface ItemInsertedListener
    {
        void notifyInsertion(String item);
    }
}