删除项目后 ListView 未刷新

Question

  ListView listViewUpdate;
  ListAdapter adapter;

  listViewUpdate.setOnItemLongClickListener(new AdapterView.OnItemLongClickListener() {
            public boolean onItemLongClick(final AdapterView<?> p, View v, final int po, long id) {

                HashMap<String, String> clickedItem = EditDetails.get(po);
                iD=clickedItem.get(Configs.TAG_ID);
                AlertDialog.Builder builder = new AlertDialog.Builder(getActivity());
                builder.setTitle("Delete");
                builder.setMessage("Are you sure you want to delete?");
                builder.setIcon(android.R.drawable.ic_dialog_alert);
                builder.setPositiveButton("Yes", new DialogInterface.OnClickListener() {
                    public void onClick(DialogInterface dialog, int ii) {
                        delete(iD);
                        listViewUpdate.setAdapter(adapter);
                        ((BaseAdapter) adapter).notifyDataSetChanged();

                    }
                });

                builder.setNegativeButton("Cancel", new DialogInterface.OnClickListener()
                        {
                            public void onClick(DialogInterface dialog, int ii) {
                                dialog.dismiss();
                            }
                        }

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

        return edit_details;
    }

项目被删除但 listView 不刷新。是否必须拥有 customBaseAdapter？数据是从 MySQL 检索的，我从 here 获得教程，因为他只使用 List 适配器。谢谢

Answer 1

在从数组中删除当前位置后，您可能需要这样做来刷新列表视图

listDO.clear();  
    listDO.addAll(getyourList()); 

     if (rowAdapter == null) {   
         rowAdapter = new RowAdapter(listDO);   
         listView.setAdapter(rowAdapter);   
        } else {   
         rowAdapter.notifyDataSetChanged();   
        }