SecureActivity.java :  » Password » thinpass » com » hecticant » thinpass » Android Open Source

/*
 * Copyright 2010 Pedro Fonseca
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.hecticant.thinpass;

import android.app.Activity;
import android.content.ComponentName;
import android.content.Context;
import android.content.Intent;
import android.content.ServiceConnection;
import android.os.Bundle;
import android.os.IBinder;
import android.util.Log;

import com.hecticant.thinpass.security.SecurityService;

/**
 * All classes that require access to the {@link SecurityService} must 
 * subclass <code>SecureActivity</code>. This provides a default implementation 
 * for binding and connecting to the service. 
 * 
 * @author Pedro Fonseca
 */
public abstract class SecureActivity extends Activity {
  protected static final String TAG = "SecureActivity";
  
  protected SecurityService secService;
  
  protected boolean isBound;
  
  /* (non-javadoc) @see android.app.Service#LocalServiceSample */
  protected ServiceConnection connection = new ServiceConnection() {
    public void onServiceConnected(ComponentName className, IBinder service) 
    {
        // The service and activities are running on the same process.
      secService = ((SecurityService.LocalBinder)service).getService();
      Log.d(TAG, String.format("%s connected to %s. Locked? %s",
          toString(), secService.toString(), 
          new Boolean(secService.isLocked())));
      }

      public void onServiceDisconnected(ComponentName className) {
          secService = null;
          Log.d(TAG, toString() + "disconnected from service");
      }
  };
  
  void doBindService() {
    // Some SecureActivity subclasses are contained in tabs, so we need to 
    // use the application context. See Android issue 2483 for more info.
      isBound = getApplicationContext().bindService(
          new Intent(this, SecurityService.class), connection, 
          Context.BIND_AUTO_CREATE);
      if (isBound) {
        Log.i(TAG, "SecurityService bound."); 
      }
  }

  void doUnbindService() {
      if (isBound) {
          // Detach our existing connection.
        getApplicationContext().unbindService(connection);
          isBound = false;
          Log.i(TAG, "SecurityService unbound.");
      }
  }
  
  @Override
  protected void onDestroy() {
    Log.d(TAG, String.format("Destroying %s", toString()));
    doUnbindService();
    super.onDestroy();
  }
  
    @Override
    protected void onCreate(Bundle savedInstanceState) {
      Log.d(TAG, String.format("Creating %s", toString()));
        super.onCreate(savedInstanceState);
        doBindService();
    }
}