Java tutorial
/* * Copyright 2011 Google Inc. * * 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.goliathonline.android.kegbot.ui; import com.goliathonline.android.kegbot.util.AnalyticsUtils; import com.goliathonline.android.kegbot.R; import android.content.Intent; import android.graphics.Bitmap; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.Fragment; import android.view.LayoutInflater; import android.view.Menu; import android.view.MenuInflater; import android.view.MenuItem; import android.view.View; import android.view.ViewGroup; import android.webkit.WebView; import android.webkit.WebViewClient; import java.util.regex.Pattern; /** * A fragment containing a {@link WebView} pointing to the I/O announcements URL. */ public class BulletinFragment extends Fragment { private static final Pattern sSiteUrlPattern = Pattern.compile("google\\.com\\/events\\/io"); private static final String BULLETIN_URL = "http://www.google.com/events/io/2011/mobile_announcements.html"; private WebView mWebView; private View mLoadingSpinner; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setHasOptionsMenu(true); AnalyticsUtils.getInstance(getActivity()).trackPageView("/Bulletin"); } @Override public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) { ViewGroup root = (ViewGroup) inflater.inflate(R.layout.fragment_webview_with_spinner, null); // For some reason, if we omit this, NoSaveStateFrameLayout thinks we are // FILL_PARENT / WRAP_CONTENT, making the progress bar stick to the top of the activity. root.setLayoutParams( new ViewGroup.LayoutParams(ViewGroup.LayoutParams.FILL_PARENT, ViewGroup.LayoutParams.FILL_PARENT)); mLoadingSpinner = root.findViewById(R.id.loading_spinner); mWebView = (WebView) root.findViewById(R.id.webview); mWebView.setWebViewClient(mWebViewClient); mWebView.post(new Runnable() { public void run() { mWebView.getSettings().setJavaScriptEnabled(true); mWebView.getSettings().setJavaScriptCanOpenWindowsAutomatically(false); mWebView.loadUrl(BULLETIN_URL); } }); return root; } @Override public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) { super.onCreateOptionsMenu(menu, inflater); inflater.inflate(R.menu.refresh_menu_items, menu); } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() == R.id.menu_refresh) { mWebView.reload(); return true; } return super.onOptionsItemSelected(item); } private WebViewClient mWebViewClient = new WebViewClient() { @Override public void onPageStarted(WebView view, String url, Bitmap favicon) { super.onPageStarted(view, url, favicon); mLoadingSpinner.setVisibility(View.VISIBLE); mWebView.setVisibility(View.INVISIBLE); } @Override public void onPageFinished(WebView view, String url) { super.onPageFinished(view, url); mLoadingSpinner.setVisibility(View.GONE); mWebView.setVisibility(View.VISIBLE); } @Override public boolean shouldOverrideUrlLoading(WebView view, String url) { if (sSiteUrlPattern.matcher(url).find()) { return false; } Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); startActivity(intent); return true; } }; }