public Class<?> getCaptureActivity() {
        if (captureActivity == null) {
            captureActivity = getDefaultCaptureActivity();
        }
        return captureActivity;
    }
@author Sean Owen
@author Fred Lin
@author Isaac Potoczny-Jones
@author Brad Drehmer
@author gcstang
@deprecated Use ScanOptions and ScanContract instead.
zxing-android-embedded/src/com/google/zxing/integration/android/IntentIntegrator.java