private void ErrorMessage(String message) {
        myESBMobileActivity frame = (myESBMobileActivity) OperationActivity;
        if (frame != null) {
            AudioManager audioManager = (AudioManager) frame.getSystemService(Context.AUDIO_SERVICE);
            float actualVolume = (float) audioManager
                    .getStreamVolume(AudioManager.STREAM_MUSIC);
            float maxVolume = (float) audioManager
                    .getStreamMaxVolume(AudioManager.STREAM_MUSIC);
            float volume = actualVolume / maxVolume;
            frame.soundpool.play(frame.soundCancel, volume, volume, 1, 0, 1f);
        }
        lblOperationResult.setTextColor(Color.RED);
        lblOperationResult.setText(message);
    }

private Activity OperationActivity;
public void onAttach(Activity activity) {
        super.onAttach(activity);
        OperationActivity = activity;
    }