Android Open Source - formulize-android Screen Web Activity

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Back to project page formulize-android.

License

The source code is released under:

GNU General Public License

Java Source Code

package ca.formulize.android.ui;
/*from   ww w.  j  av  a  2  s  . com*/
import java.net.CookieHandler;
import java.net.HttpCookie;
import java.net.URI;
import java.net.URISyntaxException;
import java.util.List;

import android.annotation.SuppressLint;
import android.annotation.TargetApi;
import android.content.Intent;
import android.graphics.Bitmap;
import android.net.Uri;
import android.os.Build;
import android.os.Bundle;
import android.support.v4.app.FragmentActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;
import android.webkit.CookieManager;
import android.webkit.WebChromeClient;
import android.webkit.WebView;
import android.webkit.WebViewClient;
import ca.formulize.android.R;
import ca.formulize.android.connection.FUserSession;

/**
 * Displays a Formulize screen given its screen ID. It assumes that there exists
 * proper session cookies given in the Cookie Manager within HttpURLConnection.
 * It transfers these session cookies to the Android WebView so it could display
 * the screen.
 * 
 * @author timch326
 * 
 */
@SuppressLint("SetJavaScriptEnabled")
public class ScreenWebActivity extends FragmentActivity {
  public static final String EXTRA_SID = "ca.formulize.android.extras.sid";

  private WebView webView;

  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    // Show the Up button in the action bar.
    setupActionBar();

    webView = new WebView(this);
    setContentView(webView);

    if (savedInstanceState != null) {
      Log.d("Formulize", "Restoring Webview");
      webView.restoreState(savedInstanceState);
    } else {

      // Parameters to access a screen
      Intent screenIntent = getIntent();
      String sid = screenIntent.getStringExtra(EXTRA_SID);
      FUserSession userSession = FUserSession.getInstance();
      String urlString = userSession.getConnectionInfo()
          .getConnectionURL();

      // Create URI Connection
      URI baseURI = null;
      try {
        baseURI = new URI(urlString);
      } catch (URISyntaxException e) {
        e.printStackTrace();
      }

      // Pass session cookies from HttpUrlConnection to the WebView
      android.webkit.CookieSyncManager.createInstance(this);
      android.webkit.CookieManager cookieManager = CookieManager
          .getInstance();
      java.net.CookieStore rawCookieStore = ((java.net.CookieManager) CookieHandler
          .getDefault()).getCookieStore();

      // Copy cookies from HttpURLConnection to WebView
      List<HttpCookie> cookies = rawCookieStore.get(baseURI);
      String url = baseURI.toString();
      for (HttpCookie cookie : cookies) {
        String setCookie = new StringBuilder(cookie.toString())
            .append("; domain=").append(cookie.getDomain())
            .append("; path=").append(cookie.getPath()).toString();
        cookieManager.setCookie(url, setCookie);
      }

      // Load screen page
      webView.setWebViewClient(new FScreenWebViewClient());
      webView.setWebChromeClient(new WebChromeClient());
      webView.getSettings().setJavaScriptEnabled(true);
      String fFormURL = userSession.getConnectionInfo()
          .getConnectionURL() + "modules/formulize/index.php?" + sid;

      webView.loadUrl(fFormURL);
    }
  }
  
  @Override
  protected void onResume() {
    super.onResume();
    FUserSession.getInstance().startKeepAliveSession(this);
  }
  
  @Override
  protected void onPause() {
    super.onPause();
    FUserSession.getInstance().endKeepAliveSession(this);
  }

  protected void onSaveInstanceState(Bundle savedInstanceState) {
    webView.saveState(savedInstanceState);
    Log.d("Formulize", "Saving Webview");

  }

  /**
   * Set up the {@link android.app.ActionBar}, if the API is available.
   */
  @TargetApi(Build.VERSION_CODES.HONEYCOMB)
  private void setupActionBar() {
    if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.HONEYCOMB) {
      getActionBar().setDisplayHomeAsUpEnabled(true);
    }
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.application_menu, menu);
    return true;
  }

  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case android.R.id.home:
      // NavUtils.navigateUpFromSameTask(this);
      onBackPressed();
      return true;
    case R.id.logout:
      new LogoutDialogFragment().show(this.getSupportFragmentManager(), "logout");;
      return true;
    }
    return super.onOptionsItemSelected(item);
  }

  private class FScreenWebViewClient extends WebViewClient {

    @Override
    public void onPageStarted(WebView view, String url, Bitmap favicon) {
      Log.d("Formulize", "Loading " + url);
    }

    @Override
    public boolean shouldOverrideUrlLoading(WebView view, String url) {
      String hostname = Uri.parse(url).getHost();
      if (!hostname.contains("localhost")) {
        return false;
      }
      Log.d("Formulize", "Prevented " + hostname + " from loading.");

      // Replace localhost with Android local machine's "localhost" IP
      view.loadUrl(url.replace("localhost", "10.0.2.2"));

      return true;
    }
  }

}

Java Source Code List

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