Copy paste demo

Factory.kt

class IntViewModelFactory(val application: Application, val int: Int) :
    ViewModelProvider.NewInstanceFactory() {

    @Suppress("UNCHECKED_CAST")
    override fun <T : ViewModel?> create(modelClass: Class<T>) =
        IntViewModel(application, int) as T
}

class StringViewModelFactory(val application: Application, val string: String) :
    ViewModelProvider.NewInstanceFactory() {

    @Suppress("UNCHECKED_CAST")
    override fun <T : ViewModel?> create(modelClass: Class<T>) =
        StringViewModel(application, string) as T
}

class IntentViewModelFactory(val application: Application, val intent: Intent) :
    ViewModelProvider.NewInstanceFactory() {

    @Suppress("UNCHECKED_CAST")
    override fun <T : ViewModel?> create(modelClass: Class<T>) =
        IntentViewModel(application, intent) as T
}