textview对象始终以场景形式摇晃

Question

通过使用以下代码，textView始终面向相机。但是，textview对象始终保持不稳定状态。是否可以在下面的代码中添加锚点，以在旋转手机时保持textview对象稳定和静态？

我试图在场景中渲染textview对象，并始终面对相机。

protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);

    arFragment = (ArFragment) getSupportFragmentManager().findFragmentById(R.id.sceneform_arfragment);
    arFragment.getPlaneDiscoveryController().hide();
    arFragment.getPlaneDiscoveryController().setInstructionView(null);
    arFragment.getArSceneView().getPlaneRenderer().setEnabled(false);

    node = new Node();
    node.setParent(arFragment.getArSceneView().getScene());
    node.setLocalPosition(new Vector3(0f, 0f, -1f));

    ViewRenderable.builder()
            .setView(this, R.layout.card)
            .build()
            .thenAccept(renderable -> {
                node.setRenderable(renderable);
                TextView textView = (TextView) renderable.getView();
                textView.setText("Hello Sceneform");
            });
  arFragment.getArSceneView().getScene().addOnUpdateListener(this::onSceneUpdate);}

private void onSceneUpdate（FrameTime frameTime）{

arFragment.onUpdate(frameTime);
Vector3 cameraPosition = arFragment.getArSceneView().getScene().getCamera().getWorldPosition();
Vector3 cardPosition = node.getWorldPosition();
Vector3 direction = Vector3.subtract(cameraPosition, cardPosition);
Quaternion lookRotation = Quaternion.lookRotation(direction, Vector3.up());
node.setWorldRotation(lookRotation);

}

我的预期结果是面对照相机的textview对象没有晃动。