Where does an "adapter" fit in MVP (passive view)?

Question

I have been implementing my android app with what I think is Passive MVP.

So for example in my view class I have a ListView.

View

ListView userListView;

and when an item is clicked, i simpley call a method on the presenter

userListView.setOnItemClickListener(new AdapterView.OnItemClickListener() {

    @Override
    public void onItemClick(AdapterView<?> parent, View view, int position, long id) {
        mPresenter.onUserSelected(position);

    }

});

The part that I am confused about is that a ListView requires an adapter.

Presenter

So currently in my presenter I have this:

private ArrayList<User> mUserList = new ArrayList<User>();

...

adapter = new UserListAdapter(getContext(), mUserList);
mView.setUserListAdapter(adapter);

and when I want to change something I do this:

mUserList.add(user);
adapter.notifyDataSetChanged();

Is this the right place to the adapter? The reason I ask is because I was recently looking to do some work with swing, and a similar issue arises, JLists need a ListModel which seems pretty similar. So for swing, where would should the ListModel reside?

Answer 1

I believe you've correctly categorized your adapter as a Presenter.

The Presenter IS the adapter.

The adapter serves as the middle-man between the View (ListView) and Model (your List of Users) and provides View representations of each of the items in the List via the adapter's getView method.