在选定的ContextMenu操作上更新自定义ListView行

Question

I have a custom ListView including a custom row_layout. After a longclick you get different options from the contextmenu. Depending on what option is chosen by the user I want to add an image/icon to the selected row in order to mark it.

I couldnt find an answer which covers exactly this use-case. I would appreciate a hint or some help or a tutorial for this case.

Thanks in advance.

Answer 1

Never mind I got to a solution by myself. I added a boolean variable to my ListItem - Class and the ImageView to the list_row_layout as well as a ImageView to my ViewHolder Class within the CustomAdapter class. So when a contextItem is clicked the boolean Attribute is set to true for the listItem which was clicked on.

Example Code:

@Override
public boolean onContextItemSelected(MenuItem item) {

        AdapterView.AdapterContextMenuInfo info = (AdapterView.AdapterContextMenuInfo) item.getMenuInfo();

        int itemPosition = info.position;

        switch (item.getItemId()) {
            case R.id.contextItem1:

                listViewItems.get(itemPosition).setMarkerAttribute(true);
                listView.setAdapter(new MyCustomListAdapter(context, listViewItems));

                return true;
            case R.id.contextItem2:

//do sth
                return true;
            case R.id.contextItem3:
//do sth
                return true;
            default:
                return super.onContextItemSelected(item);
        }
    }

Hope this was useful to somebody, because a lot of examples only cover removing an item ...