Android Open Source - JavNav Main Activity

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Back to project page JavNav.

License

The source code is released under:

GNU General Public License

Java Source Code

/*
*//w  ww . j  av a 2 s .  co m
*   JavNav 
*    a simple application for general use of the Texas A&M-Kingsville Campus. 
*    
*    Copyright (C) 2014  Manuel Gonzales Jr.
*
*    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 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
*    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, see [http://www.gnu.org/licenses/].
*
*/
package com.senior.javnav;

import android.app.AlarmManager;
import android.app.AlertDialog;
import android.app.PendingIntent;
import android.content.Context;
import android.content.Intent;
import android.content.SharedPreferences;
import android.net.ConnectivityManager;
import android.net.NetworkInfo;
import android.os.Bundle;
import android.preference.PreferenceManager;
import android.support.v4.app.Fragment;
import android.support.v4.app.FragmentActivity;
import android.support.v4.app.FragmentTransaction;
import android.support.v4.app.ListFragment;
import android.support.v7.app.ActionBar;
import android.support.v7.app.ActionBar.Tab;
import android.support.v7.app.ActionBarActivity;
import android.util.Log;
import android.view.Menu;
import android.view.MenuItem;

import com.senior.fragments.GoogleFragment;
import com.senior.fragments.HomeFragment;
import com.senior.fragments.WebViewFrag;

public class MainActivity extends ActionBarActivity
{    
  HomeFragment Home =  new HomeFragment();
  //Google map fragment
  GoogleFragment Google = new GoogleFragment();
  //Bluegold fragment
  WebViewFrag bluegold = new WebViewFrag();
  //Blackboard fragment
  WebViewFrag blackboard = new WebViewFrag();
  //Custom web fragment
  WebViewFrag custom = new WebViewFrag();
  
  String bluegoldurl = "https://www.tamuk.edu/bluegold";
  String blackboardurl = "https://blackboard.tamuk.edu";
  String customUrl = "";
  
  //Tabs that will be added to the actionbar
  ActionBar.Tab homeTab;
  ActionBar.Tab javTab;
  ActionBar.Tab blueTab;
  ActionBar.Tab blackTab;
  ActionBar.Tab customTab;
  
  //Manually handle the back button being pressed. 
  @Override
  public void onBackPressed()
  {
    Log.i("Main","Back button pressed");
    
    if(getSupportActionBar().getSelectedTab()!=homeTab)
    {
        super.onBackPressed();
    }
    else
    {
      Log.i("Main","Backstack count "+getSupportFragmentManager().getBackStackEntryCount());
      if(getSupportFragmentManager().getBackStackEntryCount()!=0 && !Home.isAdded())
      {
        getSupportFragmentManager().popBackStack();
      }
      else
      {
        getSupportActionBar().removeAllTabs();
        finish();
      }
    }
    
  }
  
  /*
   * Methods that are called to handle the activity lifecycle
  */
  //When activity is created
  @Override
  protected void onCreate(Bundle savedInstanceState) 
  {  
    super.onCreate(savedInstanceState);
    //Add new customizable features
    Log.i("Main","Main activity called!");
    
    //Checks to see if the device is online and alerts user if not
    if(!online())
    {
      AlertDialog.Builder connectBuild = new AlertDialog.Builder(this);
      
      connectBuild.setTitle("Warning!");
      connectBuild.setMessage("You need to be connected to the internet!").setCancelable(true);
      
      AlertDialog connect = connectBuild.create();
      connect.show();
    }
    
    Log.i("Main","Maintab entered");
    
    //Seeds initial webpages.
    bluegold.loadUrl(bluegoldurl, true);
    blackboard.loadUrl(blackboardurl, true);
    
    //Sets up the actionbar
    ActionBar action = getSupportActionBar();
  
    action.setNavigationMode(ActionBar.NAVIGATION_MODE_TABS);
    action.setDisplayUseLogoEnabled(false);
      
    homeTab = action.newTab();
    homeTab.setText("Home");
    homeTab.setTabListener(new ListTabListener(Home));
    action.addTab(homeTab);
    
    javTab = action.newTab();
    javTab.setText("Map");
    javTab.setTabListener(new TabListener(Google));
    action.addTab(javTab);
    
    blueTab = action.newTab();
    blueTab.setText("Bluegold");
    blueTab.setTabListener(new TabListener(bluegold));
    action.addTab(blueTab);
    
    blackTab = action.newTab();
    blackTab.setText("Blackboard");
    blackTab.setTabListener(new TabListener(blackboard));
    action.addTab(blackTab);
    
    //Sets the layout to the activity main layout
    setContentView(R.layout.activity_main);
    
  }
  
  public void onStart()
  {
    Log.i("Main","On start called");
    super.onStart();
    
    ActionBar action = getSupportActionBar();
    SharedPreferences shared = PreferenceManager.getDefaultSharedPreferences(this);
    
    Log.i("Main","Current value "+shared.getBoolean("extra", false));
    
    //When the custom tab selection is toggled it makes the necessary changes
    if(shared.getBoolean("extra", false))
    {
      if(action.getTabCount()<5)
      {
        customTab = action.newTab();
        customTab.setText("Extra");
        customTab.setTabListener(new TabListener(custom));
        action.addTab(customTab);
        
        customUrl = shared.getString("webURL","http://www.google.com");
        custom.loadUrl(customUrl, true);
        
        Log.i("CustomUrl",customUrl);
      }
    }
    else
    {
      if(action.getTabCount()==5)
      {
        action.removeTabAt(4);
      }
    }
    
    //Loads new url if another one is entered
    if(action.getTabCount() == 5)
    {
      String tempurl = shared.getString("webURL","http://www.google.com");
      if(!tempurl.equals(customUrl))
      {
        customUrl = tempurl;
        custom.changeUrl(tempurl);
      }
    }
    
  }
  
  //When the activity is destroyed
  @Override
  protected void onDestroy()
  {
    Log.i("Main","Destroy called");
    super.onDestroy();
  }
  
  @Override
  protected void onStop()
  {
    //Start the service in a timely interval
    SharedPreferences shared = PreferenceManager.getDefaultSharedPreferences(this);
    if(shared.getBoolean("notif", true) && shared.getBoolean("notifiCancelled", true))
    {
      //one second * 60 seconds in a minute * 5
      int fiveMinutes = 1000*60*5;
      
      //Start the alarm manager service
      SharedPreferences.Editor edit = shared.edit();
      Intent service = new Intent(getApplicationContext(),BroadcastNews.class);
      PendingIntent pendingService = PendingIntent.getBroadcast(getApplicationContext(),0,service,0);
      AlarmManager newsUpdate = (AlarmManager)getSystemService(ALARM_SERVICE);
      
      //Check for the update every 5 minutes
      newsUpdate.setRepeating(AlarmManager.RTC, System.currentTimeMillis(), fiveMinutes, pendingService);
      edit.putBoolean("notifiCancelled", false).commit();
      Log.i("Main","Alarm set "+shared.getBoolean("notifiCancelled", true));
    }
    
    super.onStop();
  }
  //When the item is selected from the settings list
  @Override
  public boolean onOptionsItemSelected(MenuItem item)
  {
    Log.i("Main","Setting option chosen");
    startActivity(new Intent(this,Preferences.class));
    return true;
  }
  
  //Creates the setting list
  @Override
  public boolean onCreateOptionsMenu(Menu menu) 
  {
    // Inflate the menu; this adds items to the action bar if it is present.
    getMenuInflater().inflate(R.menu.main, menu);
    return true;
  }
  
  //Checks if the device is online
  private boolean online()
  {
    ConnectivityManager cm = (ConnectivityManager) getApplicationContext().getSystemService(Context.CONNECTIVITY_SERVICE);
    NetworkInfo info = cm.getActiveNetworkInfo();
    if(info !=null && info.isConnectedOrConnecting())
    {
      return true;
    }
    else
      return false;
  }
    
  /*
    Classes for each tab listener
  */
  
  //Special class for the list fragment
  protected class ListTabListener extends FragmentActivity implements ActionBar.TabListener
  {
    public ListFragment fragment;
        
    public ListTabListener(ListFragment fragment) 
    {
      Log.i("Tabs","Fragment being reassigned");
      this.fragment = fragment;
    }

    public void onTabReselected(Tab tab, FragmentTransaction ft) 
    {
      Log.i("Tabs","Reselected");
      
    }

    public void onTabSelected(Tab tab, FragmentTransaction ft) 
    {
      try
      {
        Log.i("Tabs","Replaced called");
        ft.replace(R.id.container, fragment);
        
      }
      catch(Exception e)
      {
        Log.i("Main","Error in replacing fragment"+e);
      }
    }

    public void onTabUnselected(Tab tab, FragmentTransaction ft) 
    {
      
      Log.i("Tabs","On remove called to "+fragment.toString());
      
      try
      {
        if(fragment.getId()!=R.id.google_map)
          ft.remove(fragment);
          
      }
      catch(Exception e)
      {
        Log.i("Main","Error in replacing frag"+e);
      }
      
    }
  }
  
  //Class for the fragments to be attached to the action bar
    protected class TabListener extends FragmentActivity implements ActionBar.TabListener
    {
      
        public Fragment fragment;
      
    public TabListener(Fragment fragment) 
    {
      Log.i("Tabs","Fragment being reassigned");
      this.fragment = fragment;
    }

    public void onTabReselected(Tab tab, FragmentTransaction ft) 
    {
      
      Log.i("Tabs","Reselected");
      
    }

    public void onTabSelected(Tab tab, FragmentTransaction ft) 
    {
      try
      {
        ft.replace(R.id.container, fragment);
      }
      catch(Exception e)
      {
        Log.i("Main","Error in replacing fragment"+e);
      }
    }

    public void onTabUnselected(Tab tab, FragmentTransaction ft) 
    {
      Log.i("Tabs","On remove called to "+fragment.toString());
    }
  }
}

Java Source Code List

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