flutter - 脚手架抽屉条件渲染抛出错误

Question

我只需要为某些特定设备的纵向模式显示一个 Scaffold 抽屉。我正在使用条件渲染（满足特定设备时 showDrawer 为真）

Scaffold(
    key: _scaffoldKey,
    drawer: showDrawer ? drawer : null,
    body: Text('test')
)

这不会破坏应用程序（它可以工作），但是当我旋转设备时它会给我一个控制台错误

════════ Exception caught by widgets library

The following assertion was thrown while finalizing the widget tree:
setState() or markNeedsBuild() called when widget tree was locked. 

This Scaffold widget cannot be marked as needing to build because the framework is locked.

我尝试将条件更改为：

drawer: showDrawer ? drawer : const SizedBox(),

但随后抽屉覆盖显示和隐藏 UI。删除条件会使控制台错误消失。

关于如何解决这个问题的任何想法？

谢谢

标签： flutterdartdrawerscaffold