Android Open Source - APO-Theta-Upsilon-App A P O

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License

The source code is released under:

GNU Lesser General Public License

Java Source Code

/*
 * Copyright 2011 Devin Schwab, Umang Banugaria
 *//w  w w . j  av a 2s.  c o m
 * This file is part of the APO Theta Upsilon App for Case Western Reserve University's Alpha Phi Omega Theta Upsilon Chapter.
 *
 * The APO Theta Upsilon program is free software: you can redistribute it and/or modify
 * it under the terms of the Lesser GNU General Public License as published by
 * the Free Software Foundation, either version 3 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
 * Lesser GNU General Public License for more details.
 *
 * You should have received a copy of the Lesser GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

package edu.cwru.apo;

import org.json.JSONException;
import org.json.JSONObject;

import edu.cwru.apo.API.Methods;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.os.Bundle;
import android.view.Window;
import android.view.WindowManager;
import android.widget.Toast;


public class APO extends Activity implements AsyncRestRequestListener<API.Methods,JSONObject>{
  
  private static final long SPLASHTIME = 3000;
  private static long STARTTIME = 0;
  
  public static final String PREF_FILE_NAME = "PrefFile";
  
  @Override
  public void onCreate(Bundle savedInstanceState)
  {
    super.onCreate(savedInstanceState);
    
        // removes title bar on app, making image full screen
        requestWindowFeature(Window.FEATURE_NO_TITLE);
        getWindow().setFlags(WindowManager.LayoutParams.FLAG_FULLSCREEN, WindowManager.LayoutParams.FLAG_FULLSCREEN);
        
        setContentView(R.layout.splash_screen);
        
        // load keys if they exist
    Auth.loadKeys(getSharedPreferences(APO.PREF_FILE_NAME, MODE_PRIVATE));
    
        API api = new API(this);
        if(!api.callMethod(Methods.checkCredentials, this, (String[])null))
        {
          Intent loginIntent = new Intent(APO.this, Login.class);
          Bundle extras = new Bundle();
          extras.putString("msg", "No saved credentials");
          loginIntent.putExtras(extras);
          APO.this.startActivity(loginIntent);
          finish();
        }
        
  }
  
  public void onRestRequestComplete(API.Methods method, JSONObject result)
  {
    // check and see if the splash screen has been shown for the minimum amount of time
    // NOTE: This would probably be better done with a timer.  Need to change this
    while(Auth.getTimestamp()-STARTTIME < SPLASHTIME)
    {
      // do nothing.  This is probably not the right way to do this
    }
    
    // set the next activity to default Login
    Intent nextActivity = new Intent(APO.this, Login.class);
    Bundle extras = new Bundle();
    
    if(method == Methods.checkCredentials)
    {
      if(result != null)
      {
        try {
          if(result.getString("requestStatus").compareTo("valid") == 0)
          {
            //change the nextActivity to Home
            Auth.loggedIn = true;
            nextActivity = new Intent(APO.this, Home.class);
          }
          else if(result.getString("requestStatus").compareTo("No response") == 0)
          {
            extras.putString("msg", "Could not contact web server. Please check your connection");
          }
          else
          {
            extras.putString("msg", "Invalid credentials");
          }
          
        } catch (JSONException e) {
          extras.putString("msg", "JSON error: Invalid JSON response");
          e.printStackTrace();
        }
      }
      else
      {
        extras.putString("msg", "JSON error: No JSON Object to read");
      }
    }
    else
    {
      extras.putString("msg", "Invalid method called");
    }
    
    nextActivity.putExtras(extras);
    
    // start the next activity
    APO.this.startActivity(nextActivity);
    finish();
  }
  
}

Java Source Code List

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