Creating an Anchor with ARCore for Amazon Sumerian

SumerianConnector.java

@JavascriptInterface
public void registerAnchor(final String requestId, final float[] matrix) {
    if (requestId == null || matrix == null) {
        return;
    }

    mSurfaceView.queueEvent(new Runnable() {
        @Override
        public void run() {
            Pose anchorPose = Pose.makeTranslation(matrix[12], matrix[13], matrix[14]);
            Anchor anchor = mSession.createAnchor(anchorPose);

            final String scriptString = "ARCoreBridge.registerAnchorResponse('" + requestId + "', '" + String.valueOf(anchor.hashCode()) + "');";
            evaluateWebViewJavascript(scriptString);
        }
    });
}