DCEFeedback

static void vibrate(Context context)

DCEFeedback.vibrate(MainActivity.this);
// For example, if `vibrate` is called in the TextResultCallback of DBR, the device will trigger a vibration each time when barcode result is detected.
mReader.setTextResultListener(new TextResultListener() {
    @Override
    public void textResultCallback(int id, ImageData imageData, TextResult[] textResults) {
        ...
        DCEFeedback.vibrate(MainActivity.this);
    }
});

static void beep(Context context)

DCEFeedback.beep(MainActivity.this);
// For example, if `beep` is called in the TextResultCallback of DBR, the device will trigger a beep each time when barcode result is detected.
mReader.setTextResultListener(new TextResultListener() {
    @Override
    public void textResultCallback(int id, ImageData imageData, TextResult[] textResults) {
        ...
        DCEFeedback.beep(MainActivity.this);
    }
});