这可行，但是不美观（并且显示问题与上述Rainer的解决方案相同：

class _MyHomePageState extends State<MyHomePage> {
  final GlobalKey _menuKey = new GlobalKey();

  @override
  Widget build(BuildContext context) {
    final button = new PopupMenuButton(
        key: _menuKey,
        itemBuilder: (_) => <PopupMenuItem<String>>[
              new PopupMenuItem<String>(
                  child: const Text('Doge'), value: 'Doge'),
              new PopupMenuItem<String>(
                  child: const Text('Lion'), value: 'Lion'),
            ],
        onSelected: (_) {});

    final tile =
        new ListTile(title: new Text('Doge or lion?'), trailing: button, onTap: () {
          // This is a hack because _PopupMenuButtonState is private.
          dynamic state = _menuKey.currentState;
          state.showButtonMenu();
        });
    return new Scaffold(
      body: new Center(
        child: tile,
      ),
    );
  }
}

我怀疑您实际上要问的是类似于https://github.com/flutter/flutter/issues/254或https://github.com/flutter/flutter/issues/8277跟踪的内容-
将标签与控件关联并使标签可单击的功能-这是Flutter框架中缺少的功能。