@Override
  public void onResume() {
    Log.i(LOG_FILE_NAME, "resume");
    if (checkLaunchState(LaunchState.GeckoRunning)) GeckoAppShell.onResume();
    // After an onPause, the activity is back in the foreground.
    // Undo whatever we did in onPause.
    super.onResume();

    // Just in case. Normally we start in onNewIntent
    if (checkLaunchState(LaunchState.PreLaunch) || checkLaunchState(LaunchState.Launching))
      onNewIntent(getIntent());

    registerReceiver(mConnectivityReceiver, mConnectivityFilter);
    GeckoNetworkManager.getInstance().start();
    GeckoScreenOrientationListener.getInstance().start();
  }
  @Override
  public void onPause() {
    Log.i(LOG_FILE_NAME, "pause");
    GeckoAppShell.sendEventToGecko(new GeckoEvent(GeckoEvent.ACTIVITY_PAUSING));
    // The user is navigating away from this activity, but nothing
    // has come to the foreground yet; for Gecko, we may want to
    // stop repainting, for example.

    // Whatever we do here should be fast, because we're blocking
    // the next activity from showing up until we finish.

    // onPause will be followed by either onResume or onStop.
    super.onPause();

    unregisterReceiver(mConnectivityReceiver);
    GeckoNetworkManager.getInstance().stop();
    GeckoScreenOrientationListener.getInstance().stop();
  }
  @Override
  public void onDestroy() {
    Log.i(LOG_FILE_NAME, "destroy");

    // Tell Gecko to shutting down; we'll end up calling System.exit()
    // in onXreExit.
    if (isFinishing()) GeckoAppShell.sendEventToGecko(new GeckoEvent(GeckoEvent.ACTIVITY_SHUTDOWN));

    if (SmsManager.getInstance() != null) {
      SmsManager.getInstance().stop();
      if (isFinishing()) SmsManager.getInstance().shutdown();
    }

    GeckoNetworkManager.getInstance().stop();
    GeckoScreenOrientationListener.getInstance().stop();

    super.onDestroy();

    unregisterReceiver(mBatteryReceiver);
  }