Unable to use 'by viewModel' with the clazz parameter in 3.1.4

[JSmyth886]

I upgraded from 3.1.2 to 3.1.4 (Android not KMM) today and have ran into an issue with one of the functions I make a lot of use of.

I have abstract classes for Activities and Fragments setup like so:

abstract class BaseActivity<VM : BaseViewModel, Binding : ViewDataBinding>(clazz: KClass<VM>) : AppCompatActivity() {
    open val viewModel: VM by viewModel(clazz = clazz)
}

abstract class BaseFragment<VM : BaseViewModel, Binding : ViewDataBinding>(clazz: KClass<VM>) : Fragment() {
    open val viewModel: VM by viewModel(clazz = clazz)
}

I have the base Activity and Fragment set up this way to make it easy to add new ones, without having to override the viewModel field unless absolutely necessary i.e. if you need a sharedViewModel.

Unfortunately in 3.1.4 I'm unable to use the viewModel function that passes the clazz parameter in this format, using the by keyword. I can't use the other viewModel functions as they need the reified type for VM, which is only possible when setting Generic parameters on inline functions. Even when opting into using this I can't get it to allow me to use it here (this function has the OptIn annotation attached).

Does anyone have any suggestions on how to work around this in 3.1.4?

[JSmyth886]

I was able to find a way around it. Though there probably is a nicer way 😅

import org.koin.androidx.viewmodel.ext.android.getViewModel
// instead of import org.koin.androidx.viewmodel.ext.android.viewModel

abstract class BaseFragment<VM : BaseViewModel, Binding : ViewDataBinding>(protected val clazz: KClass<VM>) : Fragment() {
    open lateinit var viewModel: VM
    
    open fun getViewModel() {
        viewModel = getViewModel(clazz = clazz)
    }
    
    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View {
        getViewModel()
        // rest of your onCreateView code
    }
}

Hopefully this helps someone else out with a similar usage of Koin