code: /*
   * Copyright 2014 Google Inc. All rights reserved.
   *
   * 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 org.physical_web.physicalweb;
  
  import android.annotation.SuppressLint;
  import android.app.Fragment;
  import android.os.Bundle;
  import android.view.LayoutInflater;
  import android.view.Menu;
  import android.view.View;
  import android.view.ViewGroup;
  import android.webkit.WebView;
  import android.webkit.WebViewClient;
  import android.widget.TextView;
  
  /**
   * The fragment that displays info about the app.
   */
  public class AboutFragment extends Fragment {
  
    @SuppressWarnings("WeakerAccess")
    public AboutFragment() {
    }
  
    private void initializeApplicationVersionText() {
      String versionString = getString(R.string.about_version_label) + " " + BuildConfig.VERSION_NAME;
      View view = getView();
      if (view != null) {
        TextView versionView = (TextView) view.findViewById(R.id.version);
        versionView.setText(versionString);
      }
    }
  
    @SuppressLint("SetJavaScriptEnabled")
    private void initializeWebView() {
      WebView webView = (WebView) getActivity().findViewById(R.id.about_webview);
      webView.getSettings().setJavaScriptEnabled(true);
      webView.setWebViewClient(new WebViewClient());
      webView.loadUrl(getString(R.string.url_getting_started));
    }
  
    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container,
                             Bundle savedInstanceState) {
      setHasOptionsMenu(true);
      getActivity().getActionBar().setDisplayHomeAsUpEnabled(true);
      return inflater.inflate(R.layout.fragment_about, container, false);
    }
  
    @Override
    public void onResume() {
      super.onResume();
      //noinspection ConstantConditions
      getActivity().getActionBar().setTitle(R.string.title_about);
      initializeWebView();
      initializeApplicationVersionText();
    }
  
    @Override
    public void onPrepareOptionsMenu(Menu menu) {
      super.onPrepareOptionsMenu(menu);
      Utils.hideAllMenuItems(menu);
    }
  
  }
  