package com.handmark.pulltorefresh.sample;

import java.util.Arrays;
import java.util.LinkedList;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Gravity;
import android.widget.ArrayAdapter;
import android.widget.GridView;
import android.widget.TextView;

import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.PullToRefreshGridView;

public class PullToRefreshGridActivity extends Activity {
	private LinkedList<String> mListItems;
	private PullToRefreshGridView mPullRefreshGridView;
	private GridView mGridView;
	private ArrayAdapter<String> mAdapter;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.pull_to_refresh_grid);

		mPullRefreshGridView = (PullToRefreshGridView) findViewById(R.id.pull_refresh_grid);
		mGridView = mPullRefreshGridView.getRefreshableView();

		// Set a listener to be invoked when the list should be refreshed.
		mPullRefreshGridView.setOnRefreshListener(new OnRefreshListener() {
			@Override
			public void onRefresh() {
				// Do work to refresh the list here.
				new GetDataTask().execute();
			}
		});

		mListItems = new LinkedList<String>();
		
		TextView tv = new TextView(this);
		tv.setGravity(Gravity.CENTER);
		tv.setText("Empty View, Pull Down/Up to Add Items");
		mPullRefreshGridView.setEmptyView(tv);
		
		mAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mListItems);
		mGridView.setAdapter(mAdapter);
	}

	private class GetDataTask extends AsyncTask<Void, Void, String[]> {

		@Override
		protected String[] doInBackground(Void... params) {
			// Simulates a background job.
			try {
				Thread.sleep(2000);
			} catch (InterruptedException e) {
			}
			return mStrings;
		}

		@Override
		protected void onPostExecute(String[] result) {
			mListItems.addFirst("Added after refresh...");
			mListItems.addAll(Arrays.asList(result));
			mAdapter.notifyDataSetChanged();

			// Call onRefreshComplete when the list has been refreshed.
			mPullRefreshGridView.onRefreshComplete();

			super.onPostExecute(result);
		}
	}

	private String[] mStrings = { "Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",
	        "Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale", "Aisy Cendre",
	        "Allgauer Emmentaler" };
}

package com.handmark.pulltorefresh.sample;

import java.util.Arrays;
import java.util.LinkedList;

import android.app.Activity;
import android.os.AsyncTask;
import android.os.Bundle;
import android.view.Gravity;
import android.widget.ArrayAdapter;
import android.widget.GridView;
import android.widget.TextView;
import android.widget.Toast;

import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener2;
import com.handmark.pulltorefresh.library.PullToRefreshGridView;

public class PullToRefreshGridActivity extends Activity {
	private LinkedList<String> mListItems;
	private PullToRefreshGridView mPullRefreshGridView;
	private GridView mGridView;
	private ArrayAdapter<String> mAdapter;

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.pull_to_refresh_grid);

		mPullRefreshGridView = (PullToRefreshGridView) findViewById(R.id.pull_refresh_grid);
		mGridView = mPullRefreshGridView.getRefreshableView();

		// Set a listener to be invoked when the list should be refreshed.
		mPullRefreshGridView.setOnRefreshListener(new OnRefreshListener2() {
			
			@Override
			public void onPullDownToRefresh() {
				Toast.makeText(PullToRefreshGridActivity.this, "Pull Down!", Toast.LENGTH_SHORT).show();
				new GetDataTask().execute();
			}

			@Override
			public void onPullUpToRefresh() {
				Toast.makeText(PullToRefreshGridActivity.this, "Pull Up!", Toast.LENGTH_SHORT).show();
				new GetDataTask().execute();
			}
			
		});

		mListItems = new LinkedList<String>();

		TextView tv = new TextView(this);
		tv.setGravity(Gravity.CENTER);
		tv.setText("Empty View, Pull Down/Up to Add Items");
		mPullRefreshGridView.setEmptyView(tv);

		mAdapter = new ArrayAdapter<String>(this, android.R.layout.simple_list_item_1, mListItems);
		mGridView.setAdapter(mAdapter);
	}

	private class GetDataTask extends AsyncTask<Void, Void, String[]> {

		@Override
		protected String[] doInBackground(Void... params) {
			// Simulates a background job.
			try {
				Thread.sleep(2000);
			} catch (InterruptedException e) {
			}
			return mStrings;
		}

		@Override
		protected void onPostExecute(String[] result) {
			mListItems.addFirst("Added after refresh...");
			mListItems.addAll(Arrays.asList(result));
			mAdapter.notifyDataSetChanged();

			// Call onRefreshComplete when the list has been refreshed.
			mPullRefreshGridView.onRefreshComplete();

			super.onPostExecute(result);
		}
	}

	private String[] mStrings = { "Abbaye de Belloc", "Abbaye du Mont des Cats", "Abertam", "Abondance", "Ackawi",
			"Acorn", "Adelost", "Affidelice au Chablis", "Afuega'l Pitu", "Airag", "Airedale", "Aisy Cendre",
			"Allgauer Emmentaler" };
}

Change Sample Grid Activity to use new OnRefreshListener2