Best practice for Android MVVM startActivity

Question

I am building an Android App using MVVM and DataBinding. And I have a function inside my ViewModel that starts an Activity. Is it okay to have an onClick call inside a ViewModel

Answer 1

The way I do it is, in your ViewModel:

val activityToStart = MutableLiveData, Bundle?>>()

This allows you to check the class of Activity started, and the data passed in the Bundle. Then, in your Activity, you can add this code:

viewModel.activityToStart.observe(this, Observer { value ->
    val intent = Intent(this, value.first.java)
    if(value.second != null)
        intent.putExtras(value.second)
    startActivity(intent)
})