请尝试以下代码：套餐在这里：* * 一个

PullDownButton(
  itemBuilder: (context) => [
    PullDownMenuItem(
      title: 'Menu item',
      onTap: () => action(),
    ),
    const PullDownMenuDivider(),
    PullDownMenuItem(
      title: 'Menu item 2',
      onTap: () => action2(),
    ),
  ],
  position: PullDownMenuPosition.under,
  buttonBuilder: (context, showMenu) => CupertinoButton(
    onPressed: showMenu,
    padding: EdgeInsets.zero,
    child: const Icon(CupertinoIcons.ellipsis_circle),
  ),
);

结果：

您可以尝试使用PopupMenuButton，您可以在此处找到example

尝试下面的代码，希望它对你有帮助.并使用PopupMenuButton
声明关键变量：

final GlobalKey menuKey = GlobalKey();

小工具：

InkWell(
  onTap: () {
    dynamic state = menuKey.currentState;
    state.showButtonMenu();
  },
  child: PopupMenuButton(
    key: menuKey,
    itemBuilder: (_) => const <PopupMenuItem<String>>[
      PopupMenuItem<String>(
        child: Text('Show Test'),
        value: 'Test',
      ),
      PopupMenuItem<String>(
        child: Text('Edit Test Solution'),
        value: 'Edit',
      ),
    ],
    onSelected: (_) {},
  ),
),

结果-〉