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?

Answer 1

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

Answer 2

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