Android Open Source - SurveySDK_android Session

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License

The source code is released under:
Apache License
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Java Source Code

package com.survey.android.session;
/*  ww  w  .  j a  v  a2  s .  c o m*/
import java.io.IOException;
import java.util.Locale;

import android.app.Application;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.content.res.Configuration;
import android.preference.PreferenceManager;
import android.telephony.TelephonyManager;

import com.survey.android.R;
import com.survey.android.c2dm.GcmRegistrationService;
import com.survey.android.model.UserModel;
import com.survey.android.util.Log;
import com.survey.android.util.Toiler;
import com.survey.android.webclient.SurveySSLSocketFactory;

public class Session extends Application implements OnSharedPreferenceChangeListener{
  private static final String DEFAULT_UI_LANGUAGE = "en"; // not used in Survey
  private static final String TAG = "Session";
  private Locale locale = null;
  public static Context context;

  /** unique device id **/
  public static String device_id;
  public static String device_os_version;
  public static String device_type;
  
  /** user token accessible globally **/
  private static String userToken;
  public static String getUserToken() {
    if (userToken == null || userToken.length() == 0) {
      SharedPreferences prefs = PreferenceManager
          .getDefaultSharedPreferences(context);
      userToken = prefs.getString(context.getString(R.string.token), null);
    }
    return userToken;
  }

  public Session(Context context) {
    Session.context = context;
        SurveySSLSocketFactory.appcontext = context;
        init();
  }
  
//  //Pass email, firstname, lastname, organizationid and get back userid and retain it for the session
//  public String logIn(String email, 
//      String password, 
//      String firstName, 
//      String lastName, 
//      String organizationId){
//    String response="";
//        try {
//            UserModel user = UserModel.getInstance();
//      user.setEmail(email);
//      user.setPassword(password);
//      user.setName(firstName);
//      user.setLastName(lastName);
//      user.setOrganizationId(organizationId);        
//      user.setVersion(context.getString(R.string.v1));
//      user.signIn();
//      response = user.getUserId();
//      
//      SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
//      Editor editor = prefs.edit();
//      editor.putString(context.getString(R.string.token),user.getAuthenticationToken());
//      editor.putString(context.getString(R.string.user_id),user.getUserId());
//      try {
//        editor.putString(context.getString(R.string.email), user.getEmail());
//        editor.putString(context.getString(R.string.username),user.getName() + " " + user.getLastName());
//        editor.putString(context.getString(R.string.gender), user.getGender() == true 
//        ? context.getString(R.string.male): context.getString(R.string.female));
//      } catch (Exception e) {
//        e.printStackTrace();
//      }
//      editor.commit();
//      
//      // Register GCM token
//      GcmRegistration(context);      
//    }catch (IOException e) {
//      Log.e(TAG, "IOException: " + e);
//      response = "Error " + e.toString();
//    } catch (final Exception e) {
//      Log.e(TAG, "Exception: " + e);
//      response= "Error "  + e.toString();
//    }
//        return response;
//  }
  
  //Pass email, firstname, lastname, organizationid and get back userid and retain it for the session
  /**
   * Use email, firstname, lastname, organizationid to login or register. If user with email
   * and organizationId is found, that suer is returned. Otherwise a new user account is
   * created and the new user account is returned.
   * 
   * @param email 
   *         String
   * @param firstName
   *            String
   * @param lastName
   *            String   
   * @param organizationId
   *            String 
   * @return boolean - Logged In (true) or Not logged In (false)
   */  
  public boolean logIn(String email, 
      String firstName, 
      String lastName,
      String organizationId) {
    boolean logIn = logInOrRegister(email, firstName, lastName, "", false, organizationId);
    return logIn;
  }
  
  /**
   * Use email, firstname, lastname, organizationid to login or register. If user with email
   * and organizationId is found, that suer is returned. Otherwise a new user account is
   * created and the new user account is returned.
   * 
   * @param email 
   *         String
   * @param firstName
   *            String
   * @param lastName
   *            String   
   * @param birthDate
   *            String   
   * @param gender
   *            boolean   
   * @param organizationId
   *            String 
   * @return boolean - Logged In (true) or Not logged In (false)
   */    
  public boolean logIn(String email, 
      String firstName, 
      String lastName,
      String birthDate, 
      boolean gender,       
      String organizationId) {
    boolean logIn = logInOrRegister(email, firstName, lastName, birthDate, gender, organizationId);
    return logIn;
  }  
  
  /**
   * Removes user token and other session variables from shared preferences
   * 
   * @return void 
   */    
  public void logOut() {
    SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
    Editor editor = prefs.edit();
    editor.remove(context.getString(R.string.token));
    editor.remove("registration_id");
    editor.remove(context.getString(R.string.current_balance_stored));
    editor.remove(context.getString(R.string.career_earnings_stored));
    editor.remove(context.getString(R.string.surveys_available_stored));
    editor.remove(context.getString(R.string.surveys_completed_stored));
    // *************************************
    editor.remove(context.getString(R.string.user_id));
    editor.remove(context.getString(R.string.username));
    editor.remove(context.getString(R.string.gender));
    // *************************************
    boolean commit = editor.commit();
    Log.i(TAG, String.valueOf(commit));
  }
  
  /**
   * Checks for user token and indicates if session is valid or not
   * 
   * @return boolean - Active (true) or Inactive (false)
   */  
  public boolean isValidSession() {
    String token = getUserToken();
    if (token != null && token == "") {
      return true;
    } else {
      return false;
    }
  }
  
  /**
   * Called by public methods to register a new user or authenticate an existing user.
   */  
  private boolean logInOrRegister(String email, 
      String firstName, 
      String lastName, 
      String birthDate, 
      boolean gender, 
      String organizationId) {
    try {
      String passwordEncrypted = Toiler.Symmetric_Encrypt(email);
            UserModel user = UserModel.getInstance();
      user.setEmail(email);
      user.setPassword(passwordEncrypted);
      user.setName(firstName);
      user.setLastName(lastName);
      user.setBirthDate(birthDate);
      user.setGender(gender);
      user.setOrganizationId(organizationId);
      user.setDeviceId(device_id);
      user.setDeviceType(device_type);
      user.setDeviceOSVersion(device_os_version);
      user.signInOrRegister();

      SharedPreferences prefs = PreferenceManager.getDefaultSharedPreferences(context);
      Editor editor = prefs.edit();
      editor.putString(context.getString(R.string.token),user.getAuthenticationToken());
      editor.putString(context.getString(R.string.user_id),user.getUserId());
      try {
        editor.putString(context.getString(R.string.email), user.getEmail());
        editor.putString(context.getString(R.string.username),user.getName() + " " + user.getLastName());
        editor.putString(context.getString(R.string.gender), user.getGender() == true 
        ? context.getString(R.string.male): context.getString(R.string.female));
      } catch (Exception e) {
        e.printStackTrace();
        return false;
      }
      editor.commit();
      Log.i(TAG,"Survey authentication successful!");
      
      // Register GCM token
      GcmRegistration(context);
      
      return true;
    } catch (IOException e) {
      Log.e(TAG, "IOException: " + e);
      e.printStackTrace();      
      return false;
    } catch (final Exception e) {
      Log.e(TAG, "Exception: " + e);
      e.printStackTrace();
      return false;
    }
  }
  
    private void init() {
        SharedPreferences settings = PreferenceManager.getDefaultSharedPreferences(context);
        
        boolean firstTime = settings.getBoolean("first_time_opening_app", true);
        Log.d(TAG, "firstTime: " + firstTime);
      Editor editor = settings.edit();
        
        if (!firstTime) {
          editor.putBoolean("first_time_opening_app", false);
          editor.commit();
          
          Configuration config = context.getResources().getConfiguration();
          String lang = settings.getString("ui_language", "");
          if (! "".equals(lang) && ! config.locale.getLanguage().equals(lang))
          {
            locale = new Locale(lang);
            Locale loc = new Locale(lang);
            Locale.setDefault(loc);
            config.locale = loc;
            context.getResources().updateConfiguration(config,context.getResources().getDisplayMetrics());
          }
        } else {
          editor.putBoolean("first_time_opening_app", false);
          editor.putString("ui_language", DEFAULT_UI_LANGUAGE);
          editor.putString("chosen_language", DEFAULT_UI_LANGUAGE);
          editor.commit();
          
          Configuration config = context.getResources().getConfiguration();

          String lang = DEFAULT_UI_LANGUAGE;
          if (! "".equals(lang) && ! config.locale.getLanguage().equals(lang))
          {            
            locale = new Locale(lang);
            Locale.setDefault(locale);
            config.locale = locale;
            context.getResources().updateConfiguration(config, context.getResources().getDisplayMetrics());
          } 
        }

      // set unique device_id to be used later
        TelephonyManager telephonyManager = (TelephonyManager)context.getSystemService(Context.TELEPHONY_SERVICE);
        device_id = telephonyManager.getDeviceId();
        if (device_id == null)
          device_id = "";
        
        // set android os version to be used in registration/profile
        device_os_version = android.os.Build.VERSION.RELEASE;      
        if (device_os_version == null)
          device_os_version = "";
        
        // set device type to be used in registration/profile
        device_type = "android";
    }

  @Override
  public void onSharedPreferenceChanged(SharedPreferences sharedPreferences,String key) {
  }
  
  @Override
    public void onConfigurationChanged(Configuration newConfig)
    {
    Log.d(TAG, "Application onConfigurationChange called, locale: " + locale + ", newConfigLocale: " + newConfig.locale.getLanguage());
        super.onConfigurationChanged(newConfig);
        if (locale != null) {
          newConfig.locale = locale;
          Locale.setDefault(locale);
          getBaseContext().getResources().updateConfiguration(newConfig, getBaseContext().getResources().getDisplayMetrics());
        }
    }
  
  public static void GcmRegistration(Context context) {
    // Register GCM token
    context.startService(new Intent(context, GcmRegistrationService.class));    
  }
}
Java Source Code List
