flutter - 如何在颤动中动态调整容器大小?
问题描述
我正在使用一个高度为白色的容器
height: MediaQuery.of(context).size.height
我在其中添加了几个红色容器。当这些内部容器的数量较少时,滚动就像这样完美地工作
但是当我增加大容器内的容器数量时,滚动会溢出容器,就像这样
我发现的一种解决方案是,如果我增加白色容器的高度,即:-
height: MediaQuery.of(context).size.height*7
但这会使应用程序看起来很丑陋,并且当红色容器的数量进一步增加时最终会失败。我该如何解决这个问题?
程序代码:-
import 'package:flutter/material.dart';
void main() {
runApp(MaterialApp(
home: Test(),
));
}
class Test extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: SafeArea(
child: Scaffold(
body: Container(
color: Colors.black,
child: ListView(
children: <Widget>[
Padding(
padding: EdgeInsets.only(top: 15.0, left: 10.0),
),
SizedBox(
height: 25.0,
),
Padding(
padding: EdgeInsets.only(left: 20.0),
child: Row(
children: <Widget>[
Text(
'TEST',
style: TextStyle(
fontFamily: 'Montserrat',
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 25.0),
),
SizedBox(
width: 10.0,
),
],
),
),
SizedBox(height: 60.0,),
Container(
margin: EdgeInsets.only(top:180.0,),
height: MediaQuery.of(context).size.height,
decoration: BoxDecoration(
color: Color(0xFFEEEEEE),
borderRadius: BorderRadius.only(
topLeft: Radius.circular(75.0),
topRight: Radius.circular(75.0),
),
),
child: ListView(
primary: false,
padding: EdgeInsets.only(
left: 15.0,
right: 15.0,
top: 20.0,
),
children: <Widget>[
Padding(
padding: const EdgeInsets.only(
top: 30.0,
),
child: Column(
children: <Widget>[
Row(
children: <Widget>[
Expanded(
child: Center(
child: Text(
'TEST',
style: TextStyle(
color: Colors.black,
fontSize: 30.0,
fontWeight: FontWeight.bold,
),
),
),
),
],
),
SizedBox(height: 20.0,),
Column(
children: <Widget>[
Container(
height: 150,
color: Colors.red,
),
SizedBox(height: 20,),
Container(
height: 150,
color: Colors.red,
),
SizedBox(height: 20,),
Container(
height: 150,
color: Colors.red,
),
SizedBox(height: 20,),
Container(
height: 150,
color: Colors.red,
),
SizedBox(height: 20,),
Container(
height: 150,
color: Colors.red,
),
SizedBox(height: 20,),
Container(
height: 150,
color: Colors.red,
),
SizedBox(height: 20,),
Container(
height: 150,
color: Colors.red,
),
SizedBox(height: 20,),
],
)
],
),
),
],
),
),
],
),
),
),
),
);
}
}
解决方案
好的,经过评论的一些建议,我自己找到了解决方案。
我没有在白色容器中使用 listview ,而是将其删除并用 SingleChildScrollView 包装了白色容器,还用 Flexible 包装了它
现在容器会根据容器的数量自动调整。
固定代码:-
import 'package:flutter/material.dart';
class Test extends StatelessWidget {
@override
Widget build(BuildContext context) {
return MaterialApp(
home: SafeArea(
child: Scaffold(
body: Container(
color: Colors.black,
child: SingleChildScrollView(
child: Column(
children: <Widget>[
Padding(
padding: EdgeInsets.only(top: 15.0, left: 10.0),
),
SizedBox(
height: 25.0,
),
Padding(
padding: EdgeInsets.only(left: 20.0),
child: Row(
children: <Widget>[
Text(
'TEST',
style: TextStyle(
fontFamily: 'Montserrat',
color: Colors.white,
fontWeight: FontWeight.bold,
fontSize: 25.0),
),
SizedBox(
width: 10.0,
),
],
),
),
SizedBox(
height: 60.0,
),
//User INFO
SingleChildScrollView(
child: Flexible(
child: Container(
margin: EdgeInsets.only(
top: 180.0,
),
decoration: BoxDecoration(
color: Color(0xFFEEEEEE),
borderRadius: BorderRadius.only(
topLeft: Radius.circular(75.0),
topRight: Radius.circular(75.0),
),
),
child: Padding(
padding: EdgeInsets.only(
left: 15.0,
right: 15.0,
top: 20.0,
),
child: Column(
children: <Widget>[
Padding(
padding: const EdgeInsets.only(
top: 30.0,
),
child: Column(
children: <Widget>[
//greeting text
Row(
children: <Widget>[
Expanded(
child: Center(
child: Text(
'TEST',
style: TextStyle(
color: Colors.black,
fontSize: 30.0,
fontWeight: FontWeight.bold,
),
),
),
),
],
),
SizedBox(
height: 20.0,
),
//app work
Column(
children: <Widget>[
Container(
height: 150,
color: Colors.red,
),
SizedBox(
height: 20,
),
Container(
height: 150,
color: Colors.red,
),
SizedBox(
height: 20,
),
Container(
height: 150,
color: Colors.red,
),
SizedBox(
height: 20,
),
Container(
height: 150,
color: Colors.red,
),
SizedBox(
height: 20,
),
Container(
height: 150,
color: Colors.red,
),
SizedBox(
height: 20,
),
Container(
height: 150,
color: Colors.red,
),
SizedBox(
height: 20,
),
Container(
height: 150,
color: Colors.red,
),
SizedBox(
height: 20,
),
],
)
//add button
],
),
),
],
),
),
),
),
),
],
),
),
),
),
),
);
}
}
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