How to select an ListView item after long click?

Question

I\'ve got a silly little problem. I\'ve registered a ListFragment both as OnItemClickListener and OnItemLongClickListener of its own

Answer 1

It's possible, but just barely... I actually don't know how such a simple thing can wind up so ridiculously complicated.

The key to the answer can be found here: Android: keep blue background after ListView selection

What this boils down to is to define an additional style that is used by the ListView and setting the choice mode to AbsListView.CHOICE_MODE_SINGLE (as explained in the linked answer).

This allows you programmatically toggle the selection using Listview.setItemChecked(). However, you need to keep track of the index of the touched item in the onItemLongClick callback yourself, because ListView.setSelection() won't do that (at least ListView.getSelectedItem() will always return -1 as far as I can see).

Code (for simplicity, my fragment implements all three OnItemClickListener, OnItemLongClickListener, and ActionMode.Callback):

@Override
public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState)
{
    this.listViewAdapter = new ListViewAdapter();
    this.root = (ListView)inflater.inflate(R.layout.fragment_bookmarks, container, false);
    this.root.setAdapter(this.listViewAdapter);
    this.root.setOnItemClickListener(this);
    this.root.setOnItemLongClickListener(this);
    this.root.setChoiceMode(AbsListView.CHOICE_MODE_SINGLE);
    return this.root;
}

@Override
public boolean onItemLongClick(AdapterView parent, View view, int position, long id) {
    if(this.cabMode != null)
        return false;
    this.selectedPosition = position;
    this.root.setItemChecked(position, true);

    this.root.setOnItemClickListener(null);
    this.cabMode = getActivity().startActionMode(this);
    return true;
}

And finally, if you want to get rid of the selection when the CAB is closed:

@Override
public void onDestroyActionMode(ActionMode mode) {
    cabMode = null;
    this.root.setItemChecked(this.selectedPosition, false);
    this.selectedPosition = -1;
    this.root.setOnItemClickListener(this);
}

Registering and unregistering the OnItemClickListener makes sure that while the CAB is active you won't accidentally trigger the action usually associated with the item (like opening a detail view).