如何更改flutter中的endDrawer图标？

Question

默认情况下,flutter中的endDrawer图标是汉堡包图标.我想把它改成过滤器图标.

new Scaffold(
  endDrawer: Drawer(),
  ...
}

Answer 1

这应该做你想要的:

import 'package:flutter/material.dart';

class App extends StatefulWidget {
  @override
  _AppState createState() => _AppState();
}

class _AppState extends State<App> {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
        endDrawer: Drawer(),
        appBar: AppBar(
          actions: [
            Builder(
              builder: (context) => IconButton(
                    icon: Icon(Icons.filter),
                    onPressed: () => Scaffold.of(context).openEndDrawer(),
                    tooltip: MaterialLocalizations.of(context).openAppDrawerTooltip,
                  ),
            ),
          ],
        ),
        body: new Container(),
      ),
    );
  }
}

void main() => runApp(App());

请注意,"构建器"是必需的,以便IconButton获取脚手架下方的上下文.如果没有它,它将改为使用App的上下文,因此无法找到Scaffold.

一个不同的(更干净的？)选项是创建一个包含IconButton的StatelessWidget.