I want pick GLB file from phone sdcard then with file address or uri, show 3D model in my app. I tried sceneform-android java code as said this link:
https://github.com/SceneView/sceneform-android/blob/master/samples/3d-model-viewer/src/main/java/com/google/ar/sceneform/samples/sceneviewbackground/MainActivity.java

So I tried this code in mainactivity:

public void loadModels(Uri uri) {
        
        CompletableFuture<ModelRenderable> dragon = ModelRenderable
                .builder()
                .setSource(this
                        ,Uri.parse("https://storage.googleapis.com/ar-answers-in-search-models/static/Tiger/model.glb"))
                .setIsFilamentGltf(true)
                .setAsyncLoadEnabled(true)
                .build();

CompletableFuture.allOf(dragon, backdrop)
                .handle((ok, ex) -> {
                    try {
                        
                        Node modelNode1 = new Node();
                        modelNode1.setRenderable(dragon.get());
                        modelNode1.setLocalScale(new Vector3(0.3f, 0.3f, 0.3f));
                        modelNode1.setLocalRotation(Quaternion.multiply(
                                Quaternion.axisAngle(new Vector3(1f, 0f, 0f), 45),
                                Quaternion.axisAngle(new Vector3(0f, 1f, 0f), 75)));
                        modelNode1.setLocalPosition(new Vector3(0f, 0f, -1.0f));
                        backgroundSceneView.getScene().addChild(modelNode1);
                       


                        

                        Node modelNode3 = new Node();
                        modelNode3.setRenderable(dragon.get());
                        modelNode3.setLocalScale(new Vector3(0.3f, 0.3f, 0.3f));
                        modelNode3.setLocalRotation(Quaternion.axisAngle(new Vector3(0f, 1f, 0f), 35));
                        modelNode3.setLocalPosition(new Vector3(0f, 0f, -1.0f));
                        transparentSceneView.getScene().addChild(modelNode3);


                    } catch (InterruptedException | ExecutionException ignore) {

                        Toast.makeText(this, "ERROR!!!!!!!!!!", Toast.LENGTH_SHORT).show();
                    }
                    return null;
                });
}
    

and in layout file:

<LinearLayout
            android:layout_width="match_parent"
            android:layout_height="550dp"
            android:orientation="vertical">

            <com.google.ar.sceneform.SceneView
                android:id="@+id/backgroundSceneView"
                android:layout_width="match_parent"
                android:layout_height="300dp"
                android:layout_weight="1"
                android:background="#FF0000FF" />

            <com.google.ar.sceneform.SceneView
                android:id="@+id/transparentSceneView"
                android:layout_width="match_parent"
                android:layout_height="250dp"
                android:layout_weight="1"
                android:background="@android:color/transparent"/>
        </LinearLayout>


       


      

I faced to any error but noting displayed. Please help!. What is the problem?