Flutter how to add a Expandable menu item inside navigation drawer?

问题

I want to add expandable menu to drawer items of flutter. How can I achieve this functionality in flutter. Please just point me in the correct direction if there is any example or blog.

回答1:

You have to pass the drawers child property a ListView, and in that ListView you can then use an ExpansionTile. That would look something like this:

Drawer(
  child: ListView(
    children: <Widget>[
      ExpansionTile(
        title: Text("Expansion Title"),
        children: <Widget>[Text("children 1"), Text("children 2")],
      )
    ],
  ),
);

来源：https://stackoverflow.com/questions/51706739/flutter-how-to-add-a-expandable-menu-item-inside-navigation-drawer