在“ ExpandableListView”的当前选定列表项中禁用可点击性

Question

我正在尝试禁用ExpandableListView当前选择的列表项的可点击性（以避免重新加载同一项的记录），但是尝试在其中设置view.Clickable = false;或view.Enabled = false; Adapter的{​​{1}}替代似乎无效。

当前选定/突出显示的列表项（GetChildView）设置为：

LinearLayout

ExpandListAdapter

SetItemChecked(_selectedViewFlatPosition, true);
SetSelection(_selectedViewFlatPosition);

Answer 1

我改为在OnChildClick内的ExpandableListView侦听器中处理了它

public ExpandableListView(Context context, IAttributeSet attributes)
    : base(context, attributes)
{
    ChildClick += OnChildClick;
}

public void OnChildClick(object o, ChildClickEventArgs a)
{
    //ExpandableListView parent = a.Parent;
    //View view                 = a.ClickedView;
    int groupPosition           = a.GroupPosition;
    int childPosition           = a.ChildPosition;
    //long id                   = a.Id;

    // ignore re-selection (which will reload current record)
    if (groupPosition == _selectedItemGroupPosition 
        && childPosition == _selectedItemChildPosition)
    {
        return;
    }

    // or, alternatively
    if (_selectedItemFlatPosition == GetFlatListPosition(GetPackedPositionForChild(groupPosition, childPosition)))
    {
        return;
    }

    var adapter = (ExpandListAdapterX)ExpandableListAdapter;

    int childType = adapter.GetChildType(groupPosition, childPosition);

    switch ((ChildTypes)childType)
    {
        case ChildTypes.GroupButtonBar:             
            break;

        case ChildTypes.ListItem:

            _selectedViewFlatPosition = GetFlatListPosition(GetPackedPositionForChild(groupPosition, childPosition));
            SetItemChecked(_selectedViewFlatPosition, true);
            ClearSelectedListItem();

            // needs mvvm observation
            List[groupPosition].SelectedItem = List[groupPosition][childPosition - 1];
            _selectedItemGroupPosition = groupPosition;
            _selectedItemChildPosition = childPosition;

            ListItemClicked?.Invoke(this, new ListItemClickEventArgs(groupPosition));

            break;
    }
}