大家好~我是程式新手，想詢問遇到的問題

我在網站中找到有關於 MVVM 使用 api 的相關範例
https://givemepass.blogspot.com/2019/11/android-mvvm-koin.html?fbclid=IwAR15W9Zzd8GCojBJgK9aIoqWn5k55Zv-9boiujT2BIGyQFwvEmTkKBgfnic

範例中，將api設置為viewmodel並在activity中observe所獲取到的資料

class InfoViewModel(var infoRepository: InfoRepository) : ViewModel() {
    private var userInfoLiveData = MutableLiveData<String>()
    val loading = MutableLiveData<Boolean>()

    fun getUserInfo(): LiveData<String> = userInfoLiveData

    @SuppressLint("CheckResult")
    fun callInfo() {
        val result = StringBuffer()
        infoRepository.loadInfo()
            .subscribeOn(Schedulers.newThread())
            .map {
                val sb = StringBuffer()
                it.forEach { post ->
                    sb.append(post.body)
                    sb.append("\n")
                    sb.append("---------------------\n")
                }
                result.append(sb.toString())
            }
            .observeOn(AndroidSchedulers.mainThread())
            .compose(toggleLoading())
            .subscribe({
                userInfoLiveData.setValue(it.toString())
            }, {
                userInfoLiveData.setValue(result.toString())
            })
    }

    private fun <T> toggleLoading(): SingleTransformer<T, T> {
        return SingleTransformer { single ->
            single
                .doOnSubscribe { loading.value = true }
                .doFinally { loading.value = false }
        }
    }

}

我有個疑問~
當我使用databinding的方式，將button的onclick設置在viewmodel中

            <Button
                android:layout_width="0dp"
                android:layout_height="wrap_content"
                android:layout_weight="1"
                android:onClick="@{() -> viewModel.goBackClicked()}"
                android:textSize="16sp" />

我在該activity對應的viewModel中，要使用api viewmodel

class ActivityViewModel(private val infoViewModel: InfoViewModel) : ViewModel() {
    fun conFirmClicked() {
        infoViewModel. callInfo()
    }
}

val myModule = module {
    viewModel { InfoViewModel(get()) }
    viewModel { ActivityViewModel(get()) }
}

但這樣不就違反了viewmodel單一職責原則
想了解當遇到這種情況時該如何解決~