AdapterContextMenuInfo is always null

Question

I tried doing this by the book from android dev docs:

// this didn't create a menu, i don't know why
//registerForContextMenu(getListView());

setListAdapter(new ArrayAdapter<Note>(this, R.layout.selectset_listitem) {
    @Override

    protected View getView(...) {
        ... custom layout ...

        // this creates a menu, but...
        registerForContextMenu(convertView);

        return convertView;
    }
}

And the onCreateContextMenu and onContextItemSelected almost exactly as in http://developer.android.com/guide/topics/ui/menus.html#context-menu.

here is how it looks in the docs (and my code):

@Override
public void onCreateContextMenu(ContextMenu menu, View v,
                                ContextMenuInfo menuInfo) {
  super.onCreateContextMenu(menu, v, menuInfo);
  MenuInflater inflater = getMenuInflater();
  inflater.inflate(R.menu.context_menu, menu);
}

but this part always gives me a null info:

public boolean onContextItemSelected(MenuItem item) {
    AdapterContextMenuInfo info = (AdapterContextMenuInfo) item.getMenuInfo();
    ...
}

The only thing that is really unique is that i've got a custom layout for list items (i.e. a couple of text fields and an image). Is there something i need to do to be able to get the index of the list item that the context menu was built for?

You say onCreateContextMenu is "almost" exactly the same, whats the difference? Can you post that method? — Jack, Sep 03 '11 at 05:55
why did you comment out registerForContextMenu()? It doesn't "create" a menu, it only registers your list view to listen for long touch events, and call onCreateContextMenu. If you dont registerForContextMenu, then most likely onCreateContextMenu will not work. — Jack, Sep 03 '11 at 16:12
i commented the first line out because it didn't seem to work. No context menu was created on long taps in the list view. The uncommented call actually does produce a menu. — leech, Sep 03 '11 at 16:36
Ok now what happens when you debug, and step into onContextItemSelected? Also are you using a custom adapter? If so post the code. — Jack, Sep 03 '11 at 18:27
debug into onContextItemSelected: info is set to null. I updated the question to include my ArrayAdapter. — leech, Sep 03 '11 at 22:27
let us [continue this discussion in chat](http://chat.stackoverflow.com/rooms/3139/discussion-between-leech-and-jack) — leech, Sep 04 '11 at 01:10

score 5 · Accepted Answer · edited Sep 25 '12 at 21:18

5

You need to call the registerForContextMenu() in the activity on the ListView, and not on the view items in the adapter.

edited Sep 25 '12 at 21:18

biegleux

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answered Sep 05 '12 at 11:43

theo

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recyclerview's don't seem to work that way. any workaround that you know? – eipipuz Nov 25 '14 at 21:53
@eipipuz https://stackoverflow.com/questions/26466877/how-to-create-context-menu-for-recyclerview – B-GangsteR Sep 26 '18 at 13:19

score 4 · Answer 2 · edited Sep 26 '18 at 13:27

4

getMenuInfo() will work on ListAdapter, not on views.

But, You can pass additional data with the tag of the view.

in

getView: vi.setTag(position) activity.registerForContextMenu(vi);

declare in Activity private int id;

onCreateContextMenu: id = (int) v.getTag();

onContextItemSelected:

you can use the id

edited Sep 26 '18 at 13:27

Umair

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answered May 28 '15 at 11:00

xnagyg

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AdapterContextMenuInfo is always null

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