Android Open Source - sigimera-android-app Session Handler

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License

The source code is released under:

GNU General Public License

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Java Source Code

/**
 * Sigimera Crises Information Platform Android Client
 * Copyright (C) 2012 by Sigimera//w w w .  j a  v a 2 s . co m
 * All Rights Reserved
 * 
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful, but WITHOUT
 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
 * more details.
 *
 * You should have received a copy of the GNU General Public License along
 * with this program; if not, write to the Free Software Foundation, Inc., 51
 * Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
 */
package org.sigimera.app.android.controller;

import java.util.concurrent.ExecutionException;

import org.sigimera.app.android.backend.network.LoginHttpHelper;
import org.sigimera.app.android.exception.AuthenticationErrorException;

import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.os.AsyncTask;

public class SessionHandler {
  private static SessionHandler instance = null;
  private SharedPreferences settings;
  
  private SessionHandler() {
    this.settings = ApplicationController.getInstance().getSharedPreferences();
  }
  
  public static SessionHandler getInstance(SharedPreferences _settings) {
    if ( null == instance )
      instance = new SessionHandler();
    return instance;
  }
  
  public boolean login(String _email, String _password) {  
    AsyncTask<String, Void, Boolean> login = new LoginHttpHelper().execute(_email, _password);
    try {
      return login.get();
    } catch (InterruptedException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
      return false;
    } catch (ExecutionException e) {
      // TODO Auto-generated catch block
      e.printStackTrace();
      return false;
    }
  }
  
  public boolean logout() {
    Editor editor = this.settings.edit();
    editor.clear();
    editor.commit();
    return true;
  }
  
  public String getAuthenticationToken() throws AuthenticationErrorException {
    String auth_token = this.settings.getString("auth_token", null);
    if ( null == auth_token )
      throw new AuthenticationErrorException();
    else
      return auth_token;
  }
}

Java Source Code List