What is the correct way to access the shared view model using the Kotlin property delegate approach?

The correct choice for accessing the shared view model using the Kotlin property delegate approach is by using the activityViewModels() delegate. This approach is particularly useful when you want to share a ViewModel between a Fragment and its hosting Activity. By using activityViewModels(), you ensure that the same instance of the ViewModel is shared across both the Activity and any of its Fragments, which is often required for managing UI-related data that both components might need to access.

When using activityViewModels(), the Fragment will look for an instance of the specified ViewModel (in this case, OrderViewModel) that is scoped to the Activity. This scoping is crucial for observing data that is shared between the Activity and its Fragments, allowing them to stay in sync with the same data source.

The other options provide different scoping mechanisms:

• using viewModels() is for creating a ViewModel that is scoped only to a specific Fragment, which will not allow sharing between an Activity and Fragment.

• sharedViewModels() is not a standard delegate and would typically not be used in this context; you would instead use the designated delegate methods for accessing shared ViewModels.

• fragmentViewModels() would limit the access to the ViewModel to only the Fragment where