Flutter 手动控制drawer(抽屉)打开关闭

  • GlobalKey 方式打开
    import "package:flutter/material.dart";
     
    class MyTest extends StatefulWidget {
      @override
      _MyTestState createState() => new _MyTestState ();
    }
     
    class _MyTestState extends State<MyTest> {
      final GlobalKey<ScaffoldState> _scaffoldKey = new GlobalKey<ScaffoldState>();
      @override
      Widget build(BuildContext context) {
        return new Scaffold(
          key: _scaffoldKey,
          drawer: new Drawer(),
          appBar: new AppBar(
            leading: new IconButton(
                icon: new Icon(Icons.settings),
                onPressed: () => _scaffoldKey.currentState.openDrawer()),
          ),
        );
      }
    }
  • builder方式
  • class _MyTestState extends State<MyTest> {
      @override
      Widget build(BuildContext context) {
        return new Scaffold(
          drawer: new Drawer(),
          appBar: new AppBar(
            leading: Builder(
                builder: (context) => IconButton(
                      icon: new Icon(Icons.settings),
                      onPressed: () => Scaffold.of(context).openDrawer(),
                    ),
            ),
          ),
        );
      }
    }

     

posted @ 2020-09-01 14:59  前端法师  阅读(2347)  评论(0编辑  收藏  举报