颤振：ListView不可滚动，不可反弹
我有以下示例（在iPhone X、iOS 11上测试）：颤振：ListView不可滚动，不可反弹,listview,dart,scrollview,flutter,Listview,Dart,Scrollview,Flutter,我有以下示例（在iPhone X、iOS 11上测试）： 导入“包装：颤振/材料.省道”； void main（）=>runApp（新的MyApp（））； 类MyApp扩展了无状态小部件{ @凌驾 小部件构建（构建上下文）{ 返回新材料PP( 标题：“颤振演示”， 主题：新主题数据( 主样本：颜色。蓝色， ), 主页：新MyHomePage（标题：“颤振演示主页”）， ); } } 类MyHomePage扩展StatefulWidget{ MyHomePage（{Key，this.title}）
导入“包装：颤振/材料.省道”；
void main（）=>runApp（新的MyApp（））；
类MyApp扩展了无状态小部件{
@凌驾
小部件构建（构建上下文）{
返回新材料PP(
标题：“颤振演示”，
主题：新主题数据(
主样本：颜色。蓝色，
),
主页：新MyHomePage（标题：“颤振演示主页”），
);
}
}
类MyHomePage扩展StatefulWidget{
MyHomePage（{Key，this.title}）：超级（Key:Key）；
最后的字符串标题；
@凌驾
_MyHomePageState createState（）=>new_MyHomePageState（）；
}
类_MyHomePageState扩展状态{
@凌驾
小部件构建（构建上下文）{
返回新的ListView(
儿童：[
新容器(
身高：40.0，
颜色：颜色，蓝色，
),
新容器(
身高：40.0，
颜色：颜色，红色，
),
新容器(
身高：40.0，
颜色：颜色。绿色，
),
]
);
}
}
import 'package:flutter/material.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Flutter Demo',
theme: new ThemeData(
primarySwatch: Colors.blue,
),
home: new MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => new _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
ScrollController _controller = new ScrollController();
@override
Widget build(BuildContext context) {
return new ListView(
controller: _controller,
children: <Widget>[
new Container(
height: 40.0,
color: Colors.blue,
),
new Container(
height: 40.0,
color: Colors.red,
),
new Container(
height: 40.0,
color: Colors.green,
),
]
);
}
}
导入“包装：颤振/材料.省道”；
void main（）=>runApp（新的MyApp（））；
类MyApp扩展了无状态小部件{
@凌驾
小部件构建（构建上下文）{
返回新材料PP(
标题：“颤振演示”，
主题：新主题数据(
主样本：颜色。蓝色，
),
主页：新MyHomePage（标题：“颤振演示主页”），
);
}
}
类MyHomePage扩展StatefulWidget{
MyHomePage（{Key，this.title}）：超级（Key:Key）；
最后的字符串标题；
@凌驾
_MyHomePageState createState（）=>new_MyHomePageState（）；
}
类_MyHomePageState扩展状态{
ScrollController _controller=新的ScrollController（）；
@凌驾
小部件构建（构建上下文）{
返回新的ListView(
控制器：_控制器，
儿童：[
新容器(
身高：40.0，
颜色：颜色，蓝色，
),
新容器(
身高：40.0，
颜色：颜色，红色，
),
新容器(
身高：40.0，
颜色：颜色。绿色，
),
]
);
}
}
physics:new BouncingScrollPhysics（），感谢您的帮助：）我找到了一个解决方案，如何使用内容高度小于视口的列表跟踪偏移。在
build（）NotificationListenerCustomScrollViewimport 'package:flutter/material.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Flutter Demo',
theme: new ThemeData(
primarySwatch: Colors.blue,
),
home: new MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => new _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
ScrollController _controller = new ScrollController();
@override
Widget build(BuildContext context) {
return new NotificationListener(
onNotification: _handleScrollPosition,
child: new CustomScrollView(
slivers: [
new SliverList(
delegate: new SliverChildListDelegate([
new Container(
height: 40.0,
color: Colors.blue,
),
new Container(
height: 40.0,
color: Colors.red,
),
new Container(
height: 40.0,
color: Colors.green,
),
])
)
]
)
);
}
bool _handleScrollPosition(ScrollNotification notification) {
print(notification.metrics.pixels);
return true;
}
}
导入“包装：颤振/材料.省道”；
void main（）=>runApp（新的MyApp（））；
类MyApp扩展了无状态小部件{
@凌驾
小部件构建（构建上下文）{
返回新材料PP(
标题：“颤振演示”，
主题：新主题数据(
主样本：颜色。蓝色，
),
主页：新MyHomePage（标题：“颤振演示主页”），
);
}
}
类MyHomePage扩展StatefulWidget{
MyHomePage（{Key，this.title}）：超级（Key:Key）；
最后的字符串标题；
@凌驾
_MyHomePageState createState（）=>new_MyHomePageState（）；
}
类_MyHomePageState扩展状态{
ScrollController _controller=新的ScrollController（）；
@凌驾
小部件构建（构建上下文）{
返回新的NotificationListener(
onNotification:_handleScrollPosition，
子项：新自定义滚动视图(
条子：[
新名单(
委托：新建SliverChildListDelegate([
新容器(
身高：40.0，
颜色：颜色，蓝色，
),
新容器(
身高：40.0，
颜色：颜色，红色，
),
新容器(
身高：40.0，
颜色：颜色。绿色，
),
])
)
]
)
);
}
bool_handleScrollPosition（滚动通知）{
打印（通知、度量、像素）；
返回true；
}
}
只要没有只使用
ScrollController列表视图上启用滚动，可以使用AlwaysScrollableScrollPhysics
类包装您想要的原始滚动物理。更多细节。如果需要，可以指定父级或依赖默认值
以下是添加选项的示例：
import 'package:flutter/material.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Flutter Demo',
theme: new ThemeData(
primarySwatch: Colors.blue,
),
home: new MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => new _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
ScrollController _controller = new ScrollController();
@override
Widget build(BuildContext context) {
return new ListView(
physics: const AlwaysScrollableScrollPhysics(), // new
controller: _controller,
children: <Widget>[
new Container(
height: 40.0,
color: Colors.blue,
),
new Container(
height: 40.0,
color: Colors.red,
),
new Container(
height: 40.0,
color: Colors.green,
),
]
);
}
}
导入“包装：颤振/材料.省道”；
void main（）=>runApp（新的MyApp（））；
类MyApp扩展了无状态小部件{
@凌驾
小部件构建（构建上下文）{
返回新材料PP(
标题：“颤振演示”，
主题：新主题数据(
主样本：颜色。蓝色，
),
主页：新MyHomePage（标题：“颤振演示主页”），
);
}
}
类MyHomePage扩展StatefulWidget{
MyHomePage（{Key，this.title}）：超级（Key:Key）；
最后的字符串标题；
@凌驾
_MyHomePageState createState（）=>new_MyHomePageState（）；
}
类_MyHomePageState扩展状态{
ScrollController _controller=新的ScrollController（）；
@凌驾
小部件构建（构建上下文）{
返回新的ListView(
物理：常量AlwaysScrollablePhysics（），//新建
控制器：_控制器，
儿童：[
新容器(
身高：40.0，
颜色：颜色，蓝色，
),
新容器(
身高：40.0，
有限公司
import 'package:flutter/material.dart';
void main() => runApp(new MyApp());
class MyApp extends StatelessWidget {
@override
Widget build(BuildContext context) {
return new MaterialApp(
title: 'Flutter Demo',
theme: new ThemeData(
primarySwatch: Colors.blue,
),
home: new MyHomePage(title: 'Flutter Demo Home Page'),
);
}
}
class MyHomePage extends StatefulWidget {
MyHomePage({Key key, this.title}) : super(key: key);
final String title;
@override
_MyHomePageState createState() => new _MyHomePageState();
}
class _MyHomePageState extends State<MyHomePage> {
ScrollController _controller = new ScrollController();
@override
Widget build(BuildContext context) {
return new ListView(
physics: const AlwaysScrollableScrollPhysics(), // new
controller: _controller,
children: <Widget>[
new Container(
height: 40.0,
color: Colors.blue,
),
new Container(
height: 40.0,
color: Colors.red,
),
new Container(
height: 40.0,
color: Colors.green,
),
]
);
}
}
Widget noti = new NotificationListener(
child:listView,
onNotification: (ScrollNotification note){
print(note.metrics.pixels.toInt());
},
);
ListView(
physics: const AlwaysScrollableScrollPhysics(),
children : [...]
}
const BouncingScrollPhysics(parent: AlwaysScrollableScrollPhysics())
ListView(
padding: EdgeInsets.all(8.0),
physics: const BouncingScrollPhysics(parent: AlwaysScrollableScrollPhysics()),
children: _listData.map((i) {
return ListTile(
title: Text("Item $i"),
);
}).toList(),
);
Container(
width: 400,
child: Drawer(
child: Stack(children: [
Container(
height: MediaQuery.of(context).size.height-80,
child: ListView(
controller: controller,
padding: EdgeInsets.zero,
physics: AlwaysScrollableScrollPhysics(),
children: [
Container(
height: 300,
padding: EdgeInsets.symmetric(vertical: 20, horizontal: 10),
child: DrawerHeader(
child:Stack(children: [
Center(
child: Column(
children: [
nullCatcher(image) == "" ? Image.asset("assets/images/doctor.png",height: 90,width: 90,) : Image.network(
"$image",
height: 90,
width: 90,
),
SizedBox(width: 30,),
Text("$name",style: TextStyle(color: Colors.grey[700],fontWeight: FontWeight.bold,fontSize: 25),),
Text("$specialty",style: TextStyle(color: Colors.grey[600]),),
],
),
),
Positioned(
right: 0,bottom: 10,
child: Text("Version: 1.0.0",style: TextStyle(color: Colors.orange),))
],),
),
),
ListTile(
contentPadding: EdgeInsets.zero,
title: Container(
height: 70,
padding: EdgeInsets.symmetric(horizontal: 30),
decoration: drawerListDecoration,
child: Row(
children: [
Container(
height: 35,width: 35,
decoration: BoxDecoration(
color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(100)
),
child: Icon(Icons.attach_file,color: Colors.white,size: 20,)),
SizedBox(width: 20,),
Text('Create Appointment'),
],
)),
onTap: () {
Navigator.pushReplacement(context, MaterialPageRoute(builder: (__)=>CreateAppointment()));
// Update the state of the app.
// ...
},
),
ListTile(
contentPadding: EdgeInsets.zero,
title: Container(
height: 70,
padding: EdgeInsets.symmetric(horizontal: 30),
decoration: drawerListDecoration,
child: Row(
children: [
Container(
height: 35,width: 35,
decoration: BoxDecoration(
color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(100)
),
child: Icon(Icons.attach_file,color: Colors.white,size: 20,)),
SizedBox(width: 20,),
Text('Appointment / Prescription List'),
],
)),
onTap: () {
Navigator.pushReplacement(context, MaterialPageRoute(builder: (__)=>AppointmentList()));
// Navigator.pop(context);
},
),
Container(
height: 70,
padding: EdgeInsets.symmetric(horizontal: 30 ),
color: Colors.grey[200],
child: Row(
children: [
Container(
height: 35,width: 35,
decoration: BoxDecoration(
color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(100)
),
child: Icon(Icons.attach_file,color: Colors.white,size: 20,)),
SizedBox(width: 20,),
Text("Clinical Options:",style: TextStyle(fontWeight: FontWeight.bold,color: Colors.grey[600]),),
],
),
),
ListTile(
contentPadding: EdgeInsets.zero,
title: Container(
height: childHeight,
padding: EdgeInsets.only(left: childPaddeing),
// decoration: drawerListDecoration,
child: Row(
children: [
lineDesign(),
SizedBox(width: 20,),
Text('Chief Complain'),
],
)),
onTap: () {
Navigator.pushReplacement(context, MaterialPageRoute(builder: (__)=>AppointmentList()));
// Navigator.pop(context);
},
),
ListTile(
contentPadding: EdgeInsets.zero,
title: Container(
height: 50,
padding: EdgeInsets.symmetric(horizontal: 45),
decoration: drawerListDecoration,
child: Row(
children: [
lineDesign(),
SizedBox(width: 20,),
Text('On Examination'),
],
)),
onTap: () {
Navigator.pushReplacement(context, MaterialPageRoute(builder: (__)=>AppointmentList()));
// Navigator.pop(context);
},
),
ListTile(
contentPadding: EdgeInsets.zero,
title: Container(
height: 70,
padding: EdgeInsets.symmetric(horizontal: 30),
decoration: drawerListDecoration,
child: Row(
children: [
Container(
height: 35,width: 35,
decoration: BoxDecoration(
color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(100)
),
child: Icon(Icons.attach_file,color: Colors.white,size: 20,)),
SizedBox(width: 20,),
Text('Examination Category'),
],
)),
onTap: () {
Navigator.pushReplacement(context, MaterialPageRoute(builder: (__)=>AppointmentList()));
// Navigator.pop(context);
},
),
ListTile(
contentPadding: EdgeInsets.zero,
title: Container(
height: 70,
padding: EdgeInsets.symmetric(horizontal: 30),
decoration: drawerListDecoration,
child: Row(
children: [
Container(
height: 35,width: 35,
decoration: BoxDecoration(
color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(100)
),
child: Icon(Icons.attach_file,color: Colors.white,size: 20,)),
SizedBox(width: 20,),
Text('Diagnosis'),
],
)),
onTap: () {
Navigator.pushReplacement(context, MaterialPageRoute(builder: (__)=>AppointmentList()));
// Navigator.pop(context);
},
),
ListTile(
contentPadding: EdgeInsets.zero,
title: Container(
height: 70,
padding: EdgeInsets.symmetric(horizontal: 30),
decoration: drawerListDecoration,
child: Row(
children: [
Container(
height: 35,width: 35,
decoration: BoxDecoration(
color: Theme.of(context).accentColor,
borderRadius: BorderRadius.circular(100)
),
child: Icon(Icons.attach_file,color: Colors.white,size: 20,)),
SizedBox(width: 20,),
Text('Investigations'),
],
)),
onTap: () {
Navigator.pushReplacement(context, MaterialPageRoute(builder: (__)=>AppointmentList()));
// Navigator.pop(context);
},
),
],
),
),
Positioned(
bottom: 0,
left: 0,
right: 0,
child: ButtonTheme(
child: RaisedButton(
color: Colors.red[900],
onPressed: (){
if(blocState is LogoutInLoading){}else logoutAlert(blocContext);
},
child: Container(
height: 70,
child:blocState is LogoutInLoading ? Container( height: 20,width: 20,margin: EdgeInsets.symmetric(vertical: 25), child: CircularProgressIndicator(valueColor: AlwaysStoppedAnimation(Colors.white),),) : Row(
mainAxisAlignment: MainAxisAlignment.center,
children: [
Text("Sign Out",style: TextStyle(color: Colors.white,fontWeight: FontWeight.bold,fontSize: 25),),
SizedBox(width: 20,),
Icon(Icons.logout,color: Colors.white,)
],
),
),
),
)
)
],),
),
);