Google Sceneform is now maintained by SceneView!

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build.gradle (Module level)

implementation "com.gorisse.thomas.sceneform:sceneform:1.21.0"

AndroidManifest.xml

<uses-permission android:name="android.permission.CAMERA" />

<application>
   ...
   <meta-data
        android:name="com.google.ar.core"
        android:value="optional" />
</application>

activity_ar.xml

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

ArActivity.java

Check your device compatibilty with ARcore:

  public static boolean checkSystemSupport(Activity activity) {
      // checking whether the API version of the running Android >= 24
      // that means Android Nougat 7.0
      if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
          String openGlVersion = ((ActivityManager) Objects.requireNonNull(activity.getSystemService(Context.ACTIVITY_SERVICE))).getDeviceConfigurationInfo().getGlEsVersion();
          // checking whether the OpenGL version >= 3.0
          if (Double.parseDouble(openGlVersion) >= 3.0) {
              return true;
          } else {
              Toast.makeText(activity, "App needs OpenGl Version 3.0 or later", Toast.LENGTH_SHORT).show();
              activity.finish();
              return false;
          }
      } else {
          Toast.makeText(activity, "App does not support required Build Version", Toast.LENGTH_SHORT).show();
          activity.finish();
          return false;
      }
  }

Create anchor and Model renderable:

if (checkSystemSupport(this)) {
          //Connecting to the UI
          // ArFragment is linked up with its respective id used in the activity_main.xml
          arCam = (ArFragment) getSupportFragmentManager().findFragmentById(R.id.arFragment);

          assert arCam != null;
          arCam.setOnTapArPlaneListener((hitResult, plane, motionEvent) -> {
              clickNo++;
              //rendering the model when click is 1
              if (clickNo == 1) {
                  //fixing the coordinates in the detected plane
                  Anchor anchor = hitResult.createAnchor();
                  ModelRenderable.builder()
                          .setSource(this,R.raw.tshirt) // set glb model
                          .setIsFilamentGltf(true)
                          .build()
                          .thenAccept(modelRenderable -> addModel(anchor, modelRenderable))
                          .exceptionally(throwable -> {
                              AlertDialog.Builder builder = new AlertDialog.Builder(this);
                              builder.setMessage("Something is not right" + throwable.getMessage()).show();
                              return null;
                          });
              }
          });
      }

Render model:

  private void addModel(Anchor anchor, ModelRenderable modelRenderable) {
          // Creating a AnchorNode with a specific anchor
          AnchorNode anchorNode = new AnchorNode(anchor);

          // attaching the anchorNode with the ArFragment
          anchorNode.setParent(arCam.getArSceneView().getScene());

          // attaching the anchorNode with the TransformableNode
          TransformableNode model = new TransformableNode(arCam.getTransformationSystem());
          model.setParent(anchorNode);
          // attaching the 3d model with the TransformableNode
          // that is already attached with the node
          model.setRenderable(modelRenderable);
          model.select();
      }

Learn more:

https://github.com/SceneView