QuizOverFragment.java

public class QuizOverFragment extends DialogFragment {

    private DialogQuizOverBinding binding;
    private QuizOverViewModel quizOverViewModel;

    @Override
    public void onCreate(@Nullable Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        quizOverViewModel = new ViewModelProvider(requireActivity()).get(QuizOverViewModel.class);
    }

    @Nullable
    @Override
    public View onCreateView(@NonNull LayoutInflater inflater, @Nullable ViewGroup container, @Nullable Bundle savedInstanceState) {
        binding = DialogQuizOverBinding.inflate(inflater, container, false);
        binding.setViewModel(quizOverViewModel);
        return binding.getRoot();
    }

    @Override
    public void onViewCreated(@NonNull View view, @Nullable Bundle savedInstanceState) {
        super.onViewCreated(view, savedInstanceState);
        setObservers();
    }

    @Override
    public void onResume() {
        super.onResume();
        if (getDialog() == null) return;
        Window window = getDialog().getWindow();
        if (window == null) return;
        int width = (int) (getResources().getDisplayMetrics().widthPixels * 0.4);
        WindowManager.LayoutParams params = window.getAttributes();
        params.width = width;
        window.setAttributes(params);
    }

    private void setObservers() {
        quizOverViewModel.isCancelled.observe(getViewLifecycleOwner(), aBoolean -> {
            dismiss();
        });
    }
}