Cannot Resolve ViewModelProvider Construction In A Fragment?

Answer :

Firstly you need to use the latest version of lifecycle extension. It should be:

implementation 'androidx.lifecycle:lifecycle-extensions:2.2.0' implementation "androidx.lifecycle:lifecycle-viewmodel:2.2.0"  

or any updated version.

Then you should use requireActivity() instead of getActivity(). This way you will ensure that the activity is attached an not getting a NullPointerException.

ItemSetupFragmentModel model = new ViewModelProvider(requireActivity()).get(ItemSetupFragmentModel.class); 

Note: ViewModel Overview and Declaring Dependencies

I had to restart cache after adding the library to the Gradle file. There is no need to use requireActivity(), this is enough.

You aren't using the latest library release in which the ViewModelProvider(@NonNull ViewModelStoreOwner owner) constructor was included. You are seeing the latest docs but not using the latest library version of ViewModel. You need to use

    implementation 'androidx.lifecycle:lifecycle-viewmodel:2.2.0' // For Java 

or

    implementation 'androidx.lifecycle:lifecycle-viewmodel-ktx:2.2.0' // For kotlin extension