Android Open Source - intelligent-lock-pattern Base Activity

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License

The source code is released under:

GNU General Public License

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Java Source Code

/*
 * "Copyright 2012 Lucas Andr? de Alencar"
 * /* w  ww  . j a  va2 s .c  o  m*/
 * This file is part of "Intelligent Lock Pattern".
 * 
 * "Intelligent Lock Pattern" 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.
 * 
 * "Intelligent Lock Pattern" 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 "Intelligent Lock Pattern".  If not, see <http://www.gnu.org/licenses/>.
 */

package org.unioeste.ilp;

import android.app.Activity;
import android.content.Intent;
import android.content.SharedPreferences;
import android.content.SharedPreferences.OnSharedPreferenceChangeListener;
import android.os.Bundle;
import android.util.Log;
import android.view.Menu;
import android.view.MenuInflater;
import android.view.MenuItem;

/**
 * The class BaseActivity is responsible for encapsulate some
 * common attributes that activities on this application have.
 * 
 * Implements listener onSharedPreferenceChanged that watches
 * for changes on the DropboxService configuration, either it's
 * starting or stopping. 
 * 
 * All the activities that inherents from this class, when 
 * implementing specific actions to SharedPreferecesListener,
 * its important to call the super method before any action.  
 * 
 * Encapsulates the ILPApp, so that all the activities have
 * access to the same object.
 * 
 * Responsible for showing the menu when MENU button is pressed
 * and the actions performed when some of the items is selected.
 * 
 * @author Lucas Andr? de Alencar
 *
 */
public abstract class BaseActivity extends Activity implements OnSharedPreferenceChangeListener {
  
  private static final String TAG = "BaseActivity";
  
  protected ILPApp ilp;
  
  @Override
  protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    ilp = (ILPApp) getApplication();
    ilp.prefs.registerOnSharedPreferenceChangeListener(this);
  }

  @Override
  public boolean onCreateOptionsMenu(Menu menu) {
    MenuInflater inflater = getMenuInflater();
    inflater.inflate(R.menu.menu, menu);
    return true;
  }
  
  @Override
  public boolean onOptionsItemSelected(MenuItem item) {
    switch (item.getItemId()) {
    case R.id.itemPrefs  :
      startActivity(new Intent(this, PrefsActivity.class));
      break;
    case R.id.itemExportDb:
      startActivity(new Intent(this, DatabaseExporterActivity.class));
      break;
    default:
      Log.w(TAG, "Op??o " + item.getItemId() + " inexistente!");
      break;
    }
    return true;
  }
  
  @Override
  public void onSharedPreferenceChanged(SharedPreferences sharedPreferences, String key) {
    Log.i(TAG, "Shared Preference Key: " + key);
  }
}

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