安卓 : How to Refresh list upon item deletion in customized SimpleAdapter

Question

我可以知道在自定义 SimpleAdapter 中删除 map 列表项后如何刷新 ListView 项吗？

我已经成功地使用 list.remove(position) 实现了删除列表项，但是当我尝试调用 list.notifyAll() 函数时，它给了我类似“java.lang.IllegalMonitorStateException: object not locked by notifyAll() 之前的线程”。

我希望你能帮助我。这是自定义 SimpleAdapter 的代码。

public class DeleteAdapter extends SimpleAdapter {

    Context context;
    List<? extends Map<String, ?>> list;
    int resource;
    String[] from;
    int[] to;

    public FDeleteAdapter(Context context, List<? extends Map<String, ?>> data,
            int resource, String[] from, int[] to) {
        super(context, data, resource, from, to);

        this.context = context;
        this.list = data;
        this.resource = resource;
        this.from = from;
        this.to = to;
        // TODO Auto-generated constructor stub
    }

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

        final View row = super.getView(position, convertView, parent);

        final Button delete = (Button) row.findViewById(R.id.deletebut);
        final TextView title = (TextView) row.findViewById(R.id.label);

        delete.setOnClickListener(new OnClickListener() {

            public void onClick(View view) {

                deleteDialog xdialog = new deleteDialog(context, "Delete? ", position) {

                    @Override
                    public boolean onOkClicked() {

                        list.remove(position);
                        list.notifyAll();

                        return true;
                    }
                };
                xdialog.show();
            }
        });

        return row;
    }
};

预先感谢您的帮助。

Answer 1

您应该调用 Adapter 的 notifyDataSetChanged()函数，而不是列表中的 notifyAll()。