/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.handmark.pulltorefresh.samples;

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.extras.PullToRefreshWebView2;

public final class PullToRefreshWebView2Activity extends Activity implements OnRefreshListener<WebView> {

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_ptr_webview2);

		PullToRefreshWebView2 pullRefreshWebView = (PullToRefreshWebView2) findViewById(R.id.pull_refresh_webview2);
		pullRefreshWebView.setOnRefreshListener(this);

		WebView webView = pullRefreshWebView.getRefreshableView();
		webView.getSettings().setJavaScriptEnabled(true);
		webView.setWebViewClient(new SampleWebViewClient());
		webView.loadUrl("file:///android_asset/ptr_webview2_sample.html");
	}

	private static class SampleWebViewClient extends WebViewClient {
		@Override
		public boolean shouldOverrideUrlLoading(WebView view, String url) {
			view.loadUrl(url);
			return true;
		}
	}

	@Override
	public void onRefresh(final PullToRefreshBase<WebView> refreshView) {
		// This is very contrived example, we just wait 2 seconds, then call
		// onRefreshComplete()
		refreshView.postDelayed(new Runnable() {
			@Override
			public void run() {
				refreshView.onRefreshComplete();
			}
		}, 2 * 1000);
	}
}

/*******************************************************************************
 * Copyright 2011, 2012 Chris Banes.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 *******************************************************************************/
package com.handmark.pulltorefresh.samples;

import android.app.Activity;
import android.os.Bundle;
import android.webkit.WebView;
import android.webkit.WebViewClient;

import com.handmark.pulltorefresh.library.PullToRefreshBase;
import com.handmark.pulltorefresh.library.PullToRefreshBase.OnRefreshListener;
import com.handmark.pulltorefresh.library.extras.PullToRefreshWebView2;

public final class PullToRefreshWebView2Activity extends Activity implements OnRefreshListener<WebView> {

	/** Called when the activity is first created. */
	@Override
	public void onCreate(Bundle savedInstanceState) {
		super.onCreate(savedInstanceState);
		setContentView(R.layout.activity_ptr_webview2);

		PullToRefreshWebView2 pullRefreshWebView = (PullToRefreshWebView2) findViewById(R.id.pull_refresh_webview2);
		pullRefreshWebView.setOnRefreshListener(this);

		WebView webView = pullRefreshWebView.getRefreshableView();
		webView.getSettings().setJavaScriptEnabled(true);
		webView.setWebViewClient(new SampleWebViewClient());

		// We just load a prepared HTML page from the assets folder for this
		// sample, see that file for the Javascript implementation
		webView.loadUrl("file:///android_asset/ptr_webview2_sample.html");
	}

	private static class SampleWebViewClient extends WebViewClient {
		@Override
		public boolean shouldOverrideUrlLoading(WebView view, String url) {
			view.loadUrl(url);
			return true;
		}
	}

	@Override
	public void onRefresh(final PullToRefreshBase<WebView> refreshView) {
		// This is very contrived example, we just wait 2 seconds, then call
		// onRefreshComplete()
		refreshView.postDelayed(new Runnable() {
			@Override
			public void run() {
				refreshView.onRefreshComplete();
			}
		}, 2 * 1000);
	}
}

Add some doc to the sample pointing the HTML file