MainActivity.kt

private suspend fun addPost(post: Post) {
    viewModel.addPost(post).collect { state ->
        when (state) {
            is State.Loading -> {
                showToast("Loading")
                binding.buttonAdd.isEnabled = false
            }

            is State.Success -> {
                showToast("Posted")
                binding.fieldPostContent.setText("")
                binding.buttonAdd.isEnabled = true
            }

            is State.Failed -> {
                showToast("Failed! ${state.message}")
                binding.buttonAdd.isEnabled = true
            }
        }
    }
}