Dart 如何使用没有脚手架的抽屉?

Dart 如何使用没有脚手架的抽屉?,dart,flutter,Dart,Flutter,我注意到Scaffold.Drawer只有在有Scaffold的AppBar时才会出现 但我使用了BottomNavigationBar中的BottomAppBar,而不是AppBar 如何让抽屉使用BottomAppBar? 下面是我的代码,抽屉没有出现 class homieclass extends State<homie>{ 类homieclass扩展状态{ @凌驾 小部件构建(构建上下文){ 返回材料PP( debugShowCheckedModeBanner:fals

我注意到Scaffold.Drawer只有在有Scaffold的AppBar时才会出现

但我使用了BottomNavigationBar中的BottomAppBar,而不是AppBar

如何让抽屉使用BottomAppBar? 下面是我的代码,抽屉没有出现

class homieclass extends State<homie>{
类homieclass扩展状态{
@凌驾 小部件构建(构建上下文){ 返回材料PP( debugShowCheckedModeBanner:false, 家:新脚手架(

backgroundColor:Colors.white70.不透明度(0.9),
floatingActionButtonLocation:floatingActionButtonLocation.centerDocked,
floatingActionButton:floatingActionButton(按下时:(){},背景色:Colors.redAccent,子项:图像图标(新资产估计(“ast/hello123.png”),),
bottomNavigationBar:BottomAppBar(子项:行)(
mainAxisAlignment:mainAxisAlignment.spaceAround,mainAxisSize:mainAxisSize.max,子项:[
图标按钮(图标:图标(Icons.menu),按下时:(){}),图标按钮(图标:图标(Icons.message),按下时:(){}),
],
),
),
正文:新栏目(
儿童:[新尺寸盒子(高度:50.0,),
容器(边距:EdgeInsets.only(左:0.0),子级:新文本(“事件”,textAlign:textAlign.left,样式:TextStyle(fontFamily:'ssfr',fontSize:35.0,fontWeight:fontWeight.bold),),)
,容器(边距:仅限边集(左:10.0,右:10.0),宽度:360.0,高度:40.0,装饰:新框装饰(颜色:颜色:蓝灰色,不透明度为0.2),
边框:新边框。全部(颜色:颜色。蓝灰色。不透明度(0.0),宽度:2.0),
borderRadius:new borderRadius.circular(10.0),、子项:新行(子项:[大小框(宽度:10.0),)、图标(图标。搜索,颜色:颜色。蓝灰色。不透明度(0.9),),文本(“搜索”,样式:TextStyle(fontFamily:'ssft',颜色:颜色。蓝灰色,fontSize:20.0),),)
,新尺寸箱(高度:10.0,),新尺寸箱(
身高:5.0,
孩子:新中心(
子容器:新容器(
边距:新边仅限方向(起点:1.0,终点:1.0),
身高:2.0
,
颜色:颜色。红色调。不透明度(0.8),
),
),
),],
),抽屉:新抽屉(
子:新列表视图(
children:[listile(标题:Text(“hello”),)],
),
),
),
);

}

它对我来说非常有效。下面是一个工作示例,在底部栏中有一个专用的“显示抽屉”按钮(抽屉也可以从左侧拖动):

导入“包装:颤振/材料.省道”;
void main()=>runApp(MyApp());
类MyApp扩展了无状态小部件{
@凌驾
小部件构建(构建上下文){
返回材料PP(
标题:“飞舞游乐场”,
主页:TestPage(),
);
}
}
类TestPage扩展了无状态小部件{
@凌驾
小部件构建(构建上下文){
返回脚手架(
正文:中(
子项:文本(“正文”),
),
底部导航栏:生成器(生成器:(BuildContext上下文){
返回底部AppBar(
颜色:颜色。橙色,
孩子:排(
mainAxisAlignment:mainAxisAlignment.spaceAround,
mainAxisSize:mainAxisSize.max,
儿童:[
图标按钮(图标:图标(Icons.menu),ON按下:(){
Scaffold.of(context.openDrawer();;
}),
图标按钮(icon:icon(Icons.message),按下:(){}),
],
),
);
},),
抽屉(
儿童:安全区(
右:错,
儿童:中心(
子项:文本(“抽屉内容”),
),
),
),
);
}
}

颤振版本:最新的主版本(尽管我也很确定它与测试版一起工作)

您可以使用抽屉,但您必须提供一个
DrawerController
,并安排抽屉覆盖您的其他内容。使用
堆栈
很容易做到这一点。堆栈中必须有一个不透明的容器,否则在绘图滑入滑出时会出现渲染瑕疵。Scaffold不需要然而,令人烦恼的是,当绘图移动时,它也会重建其他内容(这正是他们试图避免的类型)

import'package:flatter/signatures.dart';
进口“包装:颤振/材料.省道”;
导入“package:flatterui/util/layout_util.dart”;
void main()=>runApp(MyApp());
类MyApp扩展了无状态小部件{
@凌驾
小部件构建(构建上下文)=>
MaterialApp(标题:“颤振运动场”,
家:材料(孩子:抽屉钉(主体:主体(),抽屉:_抽屉());
}
抽屉_Drawer()=>抽屉(
儿童:安全区(
儿童:中心(
子:列(
儿童:[
文本(“收尾抽屉内容”),
生成器(生成器:(上下文)=>RaisedButton(
子项:文本('Click',语义标签:'Click 2'),
已按下:(){
Navigator.pop(上下文);
},
)),
],
),
),
),
);
Widget body()=>容器(
装饰:框装饰(颜色:color.fromARGB(255,255,255,255)),
儿童:安全区(
儿童:中心(
子项:列(子项:[
Text('Body'),//样式:TextStyle(fontSize:14.0,颜色:Colors.black)),
生成器(生成器:(上下文)=>RaisedButton(
子项:文本(“打开的抽屉”),
已按下:(){
(context.ancestorWidgetOfExactType(DrawerStack)作为DrawerStack.openDrawer();
//DrawerStack.of(context.openDrawer();
})),
]))));
类DrawerStack扩展了无状态小部件{
最终的全球银行=
GlobalKey();
最终抽屉颜色=颜色。来自argb(90100100128);
最终双抽屉redgedragwidth=null;
最终DragStartBehavior DragStartBehavior=DragStartBehavior.start;
最终窗口小部件主体;
最终出票人;
DrawerStack({Key-Key,this.body,this.drawer}):super(Key:Key);
void openDrawer(){
    backgroundColor: Colors.white70.withOpacity(0.9),
    floatingActionButtonLocation: FloatingActionButtonLocation.centerDocked,
    floatingActionButton: FloatingActionButton(onPressed: (){},backgroundColor: Colors.redAccent,child: ImageIcon(new AssetImage("ast/hello123.png")),),
    bottomNavigationBar: BottomAppBar(child: Row(
      mainAxisAlignment: MainAxisAlignment.spaceAround,mainAxisSize: MainAxisSize.max,children: <Widget>[
        IconButton(icon: Icon(Icons.menu), onPressed: (){}),IconButton(icon: Icon(Icons.message), onPressed: (){}),
    ],
    ),
    ),
    body: new Column(
      children: <Widget>[new SizedBox(height: 50.0, ),
        Container(margin: EdgeInsets.only(left: 0.0),child: new Text("Events",textAlign: TextAlign.left,style: TextStyle(fontFamily: 'ssfr',fontSize: 35.0,fontWeight: FontWeight.bold),),)
        , Container(margin: EdgeInsets.only(left: 10.0,right: 10.0) ,width: 360.0,height: 40.0,decoration: new BoxDecoration(color: Colors.blueGrey.withOpacity(0.2),
          border: new Border.all(color: Colors.blueGrey.withOpacity(0.0), width: 2.0),
          borderRadius: new BorderRadius.circular(10.0),),child: new Row(children: <Widget>[SizedBox(width: 10.0,),Icon(Icons.search,color: Colors.blueGrey.withOpacity(0.9),),Text(" Search",style: TextStyle(fontFamily: 'ssft',color: Colors.blueGrey,fontSize: 20.0),)],),)
      ,new SizedBox(height: 10.0,),new SizedBox(
        height: 5.0,
        child: new Center(
          child: new Container(
            margin: new EdgeInsetsDirectional.only(start: 1.0, end: 1.0),
            height: 2.0
            ,
            color: Colors.redAccent.withOpacity(0.8),
          ),
        ),
      ),],
    ),drawer: new Drawer(
    child: new ListView(
      children: <Widget>[ListTile(title: Text("hello"),)],
    ),
  ),

  ),
);
import 'package:flutter/material.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Playground',
      home: TestPage(),
    );
  }
}

class TestPage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      body: Center(
        child: Text('Body'),
      ),
      bottomNavigationBar: Builder(builder: (BuildContext context) {
        return BottomAppBar(
          color: Colors.orange,
          child: Row(
            mainAxisAlignment: MainAxisAlignment.spaceAround,
            mainAxisSize: MainAxisSize.max,
            children: <Widget>[
              IconButton(icon: Icon(Icons.menu), onPressed: () {
                Scaffold.of(context).openDrawer();;
              }),
              IconButton(icon: Icon(Icons.message), onPressed: () {}),
            ],
          ),
        );
        },),
      drawer: Drawer(
        child: SafeArea(
          right: false,
          child: Center(
            child: Text('Drawer content'),
          ),
        ),
      ),
    );
  }
}
import 'package:flutter/gestures.dart';
import 'package:flutter/material.dart';
import 'package:flutterui/util/layout_util.dart';

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) =>
      MaterialApp(title: 'Flutter Playground',
          home: Material(child:DrawerStack(body: body(), drawer: _drawer())));
}

Drawer _drawer() =>Drawer(
  child: SafeArea(
    child: Center(
      child: Column(
        children: [
          Text('endDrawer content'),
          Builder(builder:(context) => RaisedButton(
            child: Text('Click', semanticsLabel: 'Click 2'),
            onPressed: () {
              Navigator.pop(context);
            },
          )),
        ],
      ),
    ),
  ),
);

Widget body() => Container(
  decoration: BoxDecoration(color: Color.fromARGB(255, 255, 255, 255)),
        child: SafeArea(
            child: Center(
                child: Column(children: [
      Text('Body'), // style:TextStyle(fontSize: 14.0,color: Colors.black)),
      Builder(builder:(context) => RaisedButton(
          child: Text('Open drawer'),
          onPressed: () {
            (context.ancestorWidgetOfExactType(DrawerStack) as DrawerStack).openDrawer();
//            DrawerStack.of(context).openDrawer();
          })),
    ]))));


class DrawerStack extends StatelessWidget {
  final GlobalKey<DrawerControllerState> _drawerKey =
  GlobalKey<DrawerControllerState>();
  final drawerScrimColor = Color.fromARGB(90, 100, 100, 128);
  final double drawerEdgeDragWidth = null;
  final DragStartBehavior drawerDragStartBehavior = DragStartBehavior.start;

  final Widget body;
  final Drawer drawer;

  DrawerStack({Key key, this.body, this.drawer}) : super(key: key);

  void openDrawer() {
    _drawerKey.currentState?.open();
  }

  @override
  Widget build(BuildContext context) => Stack(
    children: [
      // body
      body,

      DrawerController(
        key: _drawerKey,
        alignment: DrawerAlignment.end,
        child: drawer,
        drawerCallback: (_){},
        dragStartBehavior: drawerDragStartBehavior,
        //widget.drawerDragStartBehavior,
        scrimColor: drawerScrimColor,
        edgeDragWidth: drawerEdgeDragWidth,
      ),
    ],
  );
}

bottomNavigationBar:BottomAppBar(
      elevation: 10,
      shape: CircularNotchedRectangle(),
      child: Container(
        height: 80,
        child: Row(
          mainAxisAlignment: MainAxisAlignment.spaceAround,
          children: [
            Expanded(
              child: GestureDetector(
                onTap: () {
                  Scaffold.of(context).openDrawer();
                },
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Icon(Icons.dashboard),
                    Text(
                      'DASHBOARD',
                      style: TextStyle(color: Colors.black),
                    ),
                  ],
                ),
              ),
            ),
            Expanded(
              child: GestureDetector(
                onTap: () {},
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Icon(Icons.home),
                    Text(
                      'CHALLENGES',
                      style: TextStyle(color: Colors.black),
                    ),
                  ],
                ),
              ),
            ),
            Expanded(
              child: GestureDetector(
                onTap: (){},
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Icon(Icons.public),
                    Text(
                      'Public',
                      style: TextStyle(color: Colors.black),
                    ),
                  ],
                ),
              ),
            ),
            Expanded(
              child: GestureDetector(
                onTap: () {},
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Icon(Icons.sentiment_satisfied),
                    Text(
                      'Settings',
                      style: TextStyle(color: Colors.black),
                    ),
                  ],
                ),
              ),
            ),
          ],
        ),
      ),
      color: AppColors.WHITE,
    );
class BottomBar {
  final GlobalKey<ScaffoldState> scaffoldKey = GlobalKey<ScaffoldState>();
  Widget build(BuildContext context) {
    return Scaffold(
        key: scaffoldKey,
        bottomNavigationBar: BottomAppBar(
          elevation: 10,
          shape: CircularNotchedRectangle(),
          child: Container(
            height: 80,
            child: Row(
              mainAxisAlignment: MainAxisAlignment.spaceAround,
              children: [
                Expanded(
                  child: GestureDetector(
                    onTap: () {
                      scaffoldKey.currentState.openDrawer();
                      // scaffoldKey.currentState.openEndDrawer(); // use to open end drawer
                    },
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Icon(Icons.dashboard),
                        Text(
                          'DASHBOARD',
                          style: TextStyle(color: Colors.black),
                        ),
                      ],
                    ),
                  ),
                ),
                Expanded(
                  child: GestureDetector(
                    onTap: () {},
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Icon(Icons.home),
                        Text(
                          'CHALLENGES',
                          style: TextStyle(color: Colors.black),
                        ),
                      ],
                    ),
                  ),
                ),
                Expanded(
                  child: GestureDetector(
                    onTap: () {},
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Icon(Icons.public),
                        Text(
                          'Public',
                          style: TextStyle(color: Colors.black),
                        ),
                      ],
                    ),
                  ),
                ),
                Expanded(
                  child: GestureDetector(
                    onTap: () {},
                    child: Column(
                      mainAxisAlignment: MainAxisAlignment.center,
                      children: [
                        Icon(Icons.sentiment_satisfied),
                        Text(
                          'Settings',
                          style: TextStyle(color: Colors.black),
                        ),
                      ],
                    ),
                  ),
                ),
              ],
            ),
          ),
          color: AppColors.WHITE,
        ));
  }
}