Android Open Source - CakeUI Cake Activity

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License

The source code is released under:

GNU General Public License

Java Source Code

package com.cakeui.generic.activity;
//w  w w.j av  a 2 s .c om
import java.util.HashMap;

import android.content.ComponentName;
import android.content.Intent;
import android.content.IntentFilter;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.support.v4.app.FragmentTransaction;

import com.actionbarsherlock.app.ActionBar;
import com.actionbarsherlock.app.SherlockFragmentActivity;
import com.actionbarsherlock.view.Menu;
import com.actionbarsherlock.view.MenuItem;
import com.actionbarsherlock.view.MenuItem.OnMenuItemClickListener;
import com.cakeui.R;
import com.cakeui.application.CakeApplication;
import com.cakeui.generic.fragment.CakeFragment;
import com.cakeui.generic.service.CakeService;
import com.cakeui.utils.CakeBroadcastReceiver;
import com.cakeui.utils.CakeDataEncapsulation;
import com.cakeui.utils.enums.PagesOpen;

/**
 * 
 * @author Mariana Azevedo
 * @email mariana@bsi.ufla.br
 * 
 * @author Sarah Caixeta
 * @email caixeta.sarah@gmail.com
 * 
 * Class that implements a generic Activity.
 *
 */

public class CakeActivity extends SherlockFragmentActivity{

  private ActionBar sherlockActionBar;
  private Menu menu;
  
  private CakeApplication cakeApp;
  private CakeBroadcastReceiver cakeBroadcastReceiver;
  
  private HashMap<CakeService, ServiceConnection> services;
  
  public PagesOpen pagesOpen;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    
    sherlockActionBar = getSupportActionBar();
    sherlockActionBar.setDisplayHomeAsUpEnabled(true);
    setSherlockActionBar(sherlockActionBar);
    
    cakeApp = (CakeApplication) getApplication();
    
    cakeBroadcastReceiver = new CakeBroadcastReceiver(this);
    registerReceiver(cakeBroadcastReceiver, new IntentFilter(CakeBroadcastReceiver.CAKE_BROADCAST));
    
    services = new HashMap<CakeService, ServiceConnection>();
    
  }
  
  @Override
  protected void onDestroy() {
    unregisterReceiver(cakeBroadcastReceiver);
    for (CakeService service : services.keySet()){
      unbindService(services.get(service));
    }
    super.onDestroy();
  }
  
  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    
    com.actionbarsherlock.view.MenuInflater inflater = getSupportMenuInflater();
    inflater.inflate(R.layout.activity_action_bar, menu);
    
    this.menu = menu;
    actionBarItemsListeners(menu);
    
    return super.onCreateOptionsMenu(menu);
  }
  
  private void actionBarItemsListeners (Menu menu){

    MenuItem menuLogoff = (MenuItem) menu.findItem(R.id.menu_logoff);
    menuLogoff.setOnMenuItemClickListener(new OnMenuItemClickListener() {
      
      @Override
      public boolean onMenuItemClick(MenuItem item) {
        finish();
        return false;
      }
    });
    
  }
  
  public ActionBar getSherlockActionBar() {
    return sherlockActionBar;
  }

  public void setSherlockActionBar(ActionBar sherlockActionBar) {
    this.sherlockActionBar = sherlockActionBar;
  }

  public Menu getMenu() {
    return menu;
  }

  public void setMenu(Menu menu) {
    this.menu = menu;
  }
  
  public CakeApplication getCakeApplication(){
    return cakeApp;
  }

  public PagesOpen getPagesOpen() {
    return pagesOpen;
  }

  public void setPagesOpen(PagesOpen pagesOpen) {
    this.pagesOpen = pagesOpen;
  }
  
  @Override
  public void onBackPressed() {
    
    if (pagesOpen == PagesOpen.FRAGMENT_ONE)
      setPagesOpen(PagesOpen.JUST_ACTIVITY);
    else if (pagesOpen == PagesOpen.FRAGMENT_TWO)
      setPagesOpen(PagesOpen.FRAGMENT_ONE);
    else if (pagesOpen == PagesOpen.FRAGMENT_THREE)
      setPagesOpen(PagesOpen.FRAGMENT_TWO);
    else if (pagesOpen == PagesOpen.FRAGMENT_FOUR)
      setPagesOpen(PagesOpen.FRAGMENT_THREE);
    else if (pagesOpen == PagesOpen.FRAGMENT_FIVE)
      setPagesOpen(PagesOpen.FRAGMENT_FOUR);
  
    super.onBackPressed();
  }
  
  /**
   * Replaces the content of the container view with the new layout.
   * @param containerViewId - ID of the FrameLayout in which the fragment will be added.
   * @param fragmentID - ID of the root Layout of the fragment xml. 
   * @throws IllegalAccessException 
   * @throws InstantiationException 
   */
  public void addFragmentToScreen(int containerViewId, int fragmentID, Class<? extends CakeFragment> fragmentClass, boolean mainFragment) throws InstantiationException, IllegalAccessException {

    CakeFragment newFragment = (CakeFragment) getSupportFragmentManager().findFragmentById(fragmentID);

    if (newFragment == null){
      newFragment = fragmentClass.newInstance();
      
      Bundle parameters = new Bundle();
      parameters.putBoolean("mainFragment", mainFragment);
      newFragment.setArguments(parameters);
      
      /* Controla se uma inst?ncia de um fragment ? mantida atrav?s do re-build de uma activity.  
       * Essa solu??o s? ? permitida se n?o h? fragments na backstack, cujo caso se aplica e
       * corrige o problema de instancia??o de fragments, que abortava o app*/
      newFragment.setRetainInstance(true);
      
      FragmentTransaction fragmentTransaction = getSupportFragmentManager().beginTransaction();
      fragmentTransaction.replace(containerViewId, newFragment, newFragment.getFragmentTag());
      fragmentTransaction.addToBackStack(null);
  
      /* permite o commit ser executado ap?s o estado de uma activity estiver salvo.
       * Como a inst?ncia do fragment est? fixa na activity, n?o teremos problema
       * ao recuperar o estado da activity*/
      fragmentTransaction.commitAllowingStateLoss(); 
    }
  }
  
  /**
   * Receives an {@link CakeDataEncapsulation} object and make the proper use of its contents.
   * @param dataEncapsulation
   */
  public void handleDataFromBroadcast(CakeDataEncapsulation dataEncapsulation){
    
    if (dataEncapsulation.getDataType().equals(CakeDataEncapsulation.DataType.NETWORK_STATUS)){
      String networkStatus = (String) dataEncapsulation.getContent();
      if (networkStatus.equals(getString(R.string.broadcast_network_up))){
        //TODO change to green icon
      } else if (networkStatus.equals(getString(R.string.broadcast_network_down))){
        //TODO change to gray icon
      }
    }
    
  }
  
  public void bindToService(Class<? extends CakeService> cakeServiceClass){
    
    Intent serviceIntent = new Intent(this, cakeServiceClass);
    
    ServiceConnection serviceConnection = new ServiceConnection() {

      @Override
      public void onServiceConnected(ComponentName name, IBinder service) {

        services.put(((CakeService.CakeBinder) service).getService(), this);

      }

      @Override
      public void onServiceDisconnected(ComponentName name) {

      }
    };

    startService(serviceIntent);
    
    bindService(serviceIntent, serviceConnection, 0);
  }
  
}

Java Source Code List

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