整个屏幕滚动,但你只需要一个 widget Flutter
The whole screen scrolls, but you need only one widget Flutter
请告诉我。我有一个可滚动的语言列表。但此刻我有整个页面滚动。我怎样才能做到只有包含语言的列表滚动,而其他所有内容(搜索栏、按钮 - 都固定在一个地方)?我在下面附上了一张屏幕截图,显示了我需要滚动的部分,而不是整个屏幕。
Padding(
padding: const EdgeInsets.only(left: 24, right: 24),
child: SingleChildScrollView(
child: Column(
children: [
const SizedBox(height: 178),
const BackStepWidget(text: 'Select Language'),
const SizedBox(height: 30),
SizedBox(
width: size.width,
child: Card(
color: constants.Colors.greyDark,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(24)),
child: Column(
children: [
const SizedBox(height: 16),
Padding(
padding: const EdgeInsets.only(left: 16, right: 20),
child: Row(
children: [
Expanded(
child: TextFormField(
decoration: const InputDecoration(
contentPadding: EdgeInsets.all(7),
filled: true,
fillColor: constants.Colors.greyLight,
hintText: 'Search',
hintStyle:
TextStyle(color: constants.Colors.white),
prefixIcon: Icon(
Icons.search,
color: constants.Colors.white,
),
suffixIcon: Icon(Icons.keyboard_voice,
color: constants.Colors.white),
border: OutlineInputBorder(
borderRadius:
BorderRadius.all(Radius.circular(10)),
)),
)),
const SizedBox(width: 14),
const Text('Cancel',
style: constants.Styles.smallBookTextStyleWhite)
],
),
),
const SizedBox(height: 14),
Padding(
padding: const EdgeInsets.only(left: 16),
child: MediaQuery.removePadding(
context: context,
removeTop: true,
child: ListView.separated(
physics: const NeverScrollableScrollPhysics(),
shrinkWrap: true,
separatorBuilder: ((context, index) => Divider(
height: 2,
color:
constants.Colors.white.withOpacity(0.2))),
itemCount: language.length,
itemBuilder: (context, index) => Padding(
padding:
const EdgeInsets.only(top: 9, bottom: 10),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
language[index],
style: constants
.Styles.smallBoldTextStyleWhite,
),
Text(
language[index],
style: constants
.Styles.smallerBookTextStyleWhite,
),
],
),
// ),
),
),
),
)
],
),
),
)
],
),
),
);
好的,问题是您在顶部有 SingleChildScrollView
。这就是为什么一切都滚动的原因。
更深的三个你有 ListView.separated
与 physics: const NeverScrollableScrollPhysics()
和 shrinkWrap: true
.
ListView 本身是可滚动的,但是 neverScroll 参数阻止了它。此外,收缩包装在这里可能不是一件好事,但这是另一回事。
删除 physics: const NeverScrollableScrollPhysics()
并删除 SingleChildScrollView
。
您最终可能会遇到内容溢出问题,但这可以稍微轻松地解决。
UPD:要解决垂直溢出问题:将 ListView
放在 Flexible
内。
简单示例:
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('widget.title'),
),
body: Column(
children: [
Container(
height: 50,
width: double.infinity,
color: Colors.green,
child: TextFormField(initialValue: 'Search box here'),
),
Flexible(
child: ListView.builder(
itemCount: 100,
itemBuilder: (_, index) => ListTile(
title: Text('$index'),
),
),
),
],
),
);
}
}
请告诉我。我有一个可滚动的语言列表。但此刻我有整个页面滚动。我怎样才能做到只有包含语言的列表滚动,而其他所有内容(搜索栏、按钮 - 都固定在一个地方)?我在下面附上了一张屏幕截图,显示了我需要滚动的部分,而不是整个屏幕。
Padding(
padding: const EdgeInsets.only(left: 24, right: 24),
child: SingleChildScrollView(
child: Column(
children: [
const SizedBox(height: 178),
const BackStepWidget(text: 'Select Language'),
const SizedBox(height: 30),
SizedBox(
width: size.width,
child: Card(
color: constants.Colors.greyDark,
shape: RoundedRectangleBorder(
borderRadius: BorderRadius.circular(24)),
child: Column(
children: [
const SizedBox(height: 16),
Padding(
padding: const EdgeInsets.only(left: 16, right: 20),
child: Row(
children: [
Expanded(
child: TextFormField(
decoration: const InputDecoration(
contentPadding: EdgeInsets.all(7),
filled: true,
fillColor: constants.Colors.greyLight,
hintText: 'Search',
hintStyle:
TextStyle(color: constants.Colors.white),
prefixIcon: Icon(
Icons.search,
color: constants.Colors.white,
),
suffixIcon: Icon(Icons.keyboard_voice,
color: constants.Colors.white),
border: OutlineInputBorder(
borderRadius:
BorderRadius.all(Radius.circular(10)),
)),
)),
const SizedBox(width: 14),
const Text('Cancel',
style: constants.Styles.smallBookTextStyleWhite)
],
),
),
const SizedBox(height: 14),
Padding(
padding: const EdgeInsets.only(left: 16),
child: MediaQuery.removePadding(
context: context,
removeTop: true,
child: ListView.separated(
physics: const NeverScrollableScrollPhysics(),
shrinkWrap: true,
separatorBuilder: ((context, index) => Divider(
height: 2,
color:
constants.Colors.white.withOpacity(0.2))),
itemCount: language.length,
itemBuilder: (context, index) => Padding(
padding:
const EdgeInsets.only(top: 9, bottom: 10),
child: Column(
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Text(
language[index],
style: constants
.Styles.smallBoldTextStyleWhite,
),
Text(
language[index],
style: constants
.Styles.smallerBookTextStyleWhite,
),
],
),
// ),
),
),
),
)
],
),
),
)
],
),
),
);
好的,问题是您在顶部有 SingleChildScrollView
。这就是为什么一切都滚动的原因。
更深的三个你有 ListView.separated
与 physics: const NeverScrollableScrollPhysics()
和 shrinkWrap: true
.
ListView 本身是可滚动的,但是 neverScroll 参数阻止了它。此外,收缩包装在这里可能不是一件好事,但这是另一回事。
删除 physics: const NeverScrollableScrollPhysics()
并删除 SingleChildScrollView
。
您最终可能会遇到内容溢出问题,但这可以稍微轻松地解决。
UPD:要解决垂直溢出问题:将 ListView
放在 Flexible
内。
简单示例:
import 'package:flutter/material.dart';
void main() {
runApp(const MyApp());
}
class MyApp extends StatelessWidget {
const MyApp({Key? key}) : super(key: key);
@override
Widget build(BuildContext context) {
return MaterialApp(
title: 'Flutter Demo',
theme: ThemeData(
primarySwatch: Colors.blue,
),
home: MyHomePage(),
);
}
}
class MyHomePage extends StatelessWidget {
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('widget.title'),
),
body: Column(
children: [
Container(
height: 50,
width: double.infinity,
color: Colors.green,
child: TextFormField(initialValue: 'Search box here'),
),
Flexible(
child: ListView.builder(
itemCount: 100,
itemBuilder: (_, index) => ListTile(
title: Text('$index'),
),
),
),
],
),
);
}
}