如何在ArCore中获取跟踪状态

implementation 'com.google.ar:core:1.26.0'

<fragment
    android:name="com.google.ar.sceneform.ux.ArFragment"
    android:id="@+id/arFragment"
    android:layout_width="match_parent"
    android:layout_height="match_parent" />

ArFragment arFragment = (ArFragment) getSupportFragmentManager().findFragmentById(R.id.arFragment);
ArSceneView arSceneView = arFragment.getArSceneView();
Session arCoreSession = arSceneView.getSession();

arCoreSession.addOnUpdateListener(session -> {
    Frame frame = arSceneView.getArFrame();
    if (frame != null && frame.getCamera().getTrackingState() == TrackingState.TRACKING) {
        // 当跟踪状态为TRACKING时执行相关操作
        // 可以在此处更新UI或执行其他逻辑
    } else {
        // 当跟踪状态不为TRACKING时执行相关操作
        // 可以在此处更新UI或执行其他逻辑
    }
});