How to use abstraction with ViewBinding with base activity?

Question

I was making a base class so that all bindings for child will be set in base

I have done till this

abstract class BaseActivity2<B : ViewBinding?, T : BaseViewModel?> : AppCompatActivity() {
    private var viewBinding: B? = null
    private var baseViewModel: T? = null

    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
    }
}

but am unable to get a way to bind view in oncreat() generally we bind layout in view binding as

binding = ActivityLoginBinding.inflate(layoutInflater)
        setContentView(binding.root)

but i am looking for generalized way in base activity

Answer 1

Other answer will also solve problem but I would like to do in a clean way.

My Base Class

abstract class BaseVMActivity<VM : ViewModel, B : ViewBinding> : BaseActivity() {

    lateinit var viewModel: VM
    lateinit var binding: B


    override fun onCreate(savedInstanceState: Bundle?) {
        super.onCreate(savedInstanceState)
        viewModel = ViewModelProvider(this, factory).get(getViewModelClass())
        binding = getViewBinding()
        setContentView(binding.root)
    }

    private fun getViewModelClass(): Class<VM> {
        val type = (javaClass.genericSuperclass as ParameterizedType).actualTypeArguments[0]
        return type as Class<VM>
    }

    abstract fun getViewBinding(): B

}

My activity:

class MainActivity : BaseVMActivity<AppViewModel, ActivityMainBinding>() {
    override fun getViewBinding() = ActivityMainBinding.inflate(layoutInflater)
   
}

Now I can directly access viewModel or binding:

fun dummy(){
        binding.bvReport.text = viewModel.getReportText()
    }