You can achieve your goal by ViewModel and Live Data which is cleared by Arnav Rao. Now I put an example to clear it more neatly.
First, the assumed ViewModel is named SharedViewModel.java.
public class SharedViewModel extends ViewModel {
private final MutableLiveData<Item> selected = new MutableLiveData<Item>();
public void select(Item item) {
selected.setValue(item);
}
public LiveData<Item> getSelected() {
return selected;
}
}
Then the source fragment is the MasterFragment.java from where we want to send a data.
public class MasterFragment extends Fragment {
private SharedViewModel model;
public void onViewCreated(@NonNull View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
model = new ViewModelProvider(requireActivity()).get(SharedViewModel.class);
itemSelector.setOnClickListener(item -> {
// Data is sent
model.select(item);
});
}
}
And finally the destination fragment is the DetailFragment.java to where we want to receive the data.
public class DetailFragment extends Fragment {
public void onViewCreated(@NonNull View view, Bundle savedInstanceState) {
super.onViewCreated(view, savedInstanceState);
SharedViewModel model = new ViewModelProvider(requireActivity()).get(SharedViewModel.class);
model.getSelected().observe(getViewLifecycleOwner(), { item ->
// Data is received
});
}
}