IssueTracker

Hi, thank you for reporting the issue.
An alternative way to get the Camera instance is via ProcessCameraProvider#bindToLifecycle(LifecycleOwner lifecycleOwner, CameraSelector cameraSelector, UseCase... useCases).
However, you will need a lifecycleOwner, and if you don't want to bind any use cases, providing an empty use case array is allowed.
ex:

    // Obtain the ProcessCameraProvider instance previously.
    ListenableFuture<ProcessCameraProvider> cameraProviderFuture = 
            ProcessCameraProvider.getInstance(context);
    cameraProviderFuture.addListener(() -> {
            try {
                mCameraProvider = cameraProviderFuture.get();
            } catch (Exception e) {
                // error handle
            }
    }, ContextCompat.getMainExecutor(context));

    // Obtain Camera via bindToLifecycle
    Camera camera = mCameraProvider.bindToLifecycle(mActivity, CameraSelector.DEFAULT_BACK_CAMERA, new UseCase[0]);
    camera.getCameraInfo();
    ...

If I do the code above in parallel with the binding CameraController can I get any troubles? I will have two camera instances probably.

If you are using the same CameraSelector for both CameraController.setCameraSelector() and CameraProvider.bindToLifecycle(), the Camera references should point to the same Camera instance. However, using CameraController and CameraProvider.bindToLifecycle() together is not a graceful means to obtain the Camera instance, so we will consider adding API to CameraController to get Camera or CameraInfo. Thanks again for your feedback.