[yesnoapi-rxjava-example] AnswerFragment.kt

.......

activity?.let {
        //we pass the activity as lifecycle owner
        answerViewModel.answer.observe(it, Observer { result ->
            when (result) {
                is Result.Success -> {
                    loadGifFromURL(result.value.image, requireContext(), answerGif)
                }
                is Result.Failure -> {
                    resolveAnswerLocally()
                }
            }
        })
}

..........