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.lullabot.android.apps.iosched.ui; import android.content.Intent; import android.graphics.Bitmap; import android.net.Uri; import android.os.Bundle; import android.support.v4.app.Fragment; import android.text.TextUtils; import android.view.LayoutInflater; import android.view.View; import android.view.ViewGroup; import android.webkit.WebView; import android.webkit.WebViewClient; import com.lullabot.android.apps.iosched.R; /** * A {@link WebView}-based fragment that shows Google Realtime Search results for a given query, * provided as the {@link TagStreamFragment#EXTRA_QUERY} extra in the fragment arguments. If no * search query is provided, the conference hashtag is used as the default query. */ public class NewsFragment extends Fragment { private WebView mWebView; private View mLoadingSpinner; @Override public void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); } @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(true); mWebView.loadUrl("http://dev.drupalcampnyc.org/mobile/news"); } }); return root; } public void refresh() { mWebView.reload(); } 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 (url.startsWith("javascript")) { return false; } Intent intent = new Intent(Intent.ACTION_VIEW, Uri.parse(url)); startActivity(intent); return true; } }; }