Question

I am extending BaseAdapter to make a custom listview row. I have context menu that opens everytime a user holds on the row and prompts if he wants to delete it. However how do I remove the row? The hashmap is only test data.

private MyListAdapter myListAdapter;
private ArrayList<HashMap<String, String>> items;

@Override
public void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);

    items = new ArrayList<HashMap<String,String>>();
    HashMap<String, String> map1 = new HashMap<String, String>();
    map1.put("date", "10/09/2011");
    map1.put("distance", "309 km");
    map1.put("duration", "1t 45min");
    items.add(map1);

    myListAdapter = new MyListAdapter(this, items);
    setListAdapter(myListAdapter);
    getListView().setOnCreateContextMenuListener(this);
}


private class MyListAdapter extends BaseAdapter {

    private Context context;
    private ArrayList<HashMap<String, String>> items;

    public MyListAdapter(Context context, ArrayList<HashMap<String, String>> items) {
        this.context = context;
        this.items = items;
    }

    @Override
    public int getCount() {
        return items.size();
    }

    @Override
    public Object getItem(int position) {
        return items.get(position);
    }

    @Override
    public long getItemId(int position) {
        return position;
    }

    @Override
    public View getView(int position, View convertView, ViewGroup parent) {

        View view = convertView;

        if (view == null) {
            LayoutInflater layoutInflater = (LayoutInflater)getSystemService(Context.LAYOUT_INFLATER_SERVICE);
            view = layoutInflater.inflate(R.layout.row_log, null);
        }

        TextView rowLogOverview = (TextView) view.findViewById(R.id.rowLogOverview);

        HashMap<String, String> item = items.get(position);
        rowLogOverview.setText(item.get("date"));

        return view;
    }
}

Answer 1

You do not delete from the adapter ! You delete from the items ! and the adapter is between your items and the view. From the view you can get the position and according the position you can delete items. Then the adapter will refresh you views.

That means you need to do something like this

 items.remove(position);
adapter.notifyDataSetChanged()