Android gridview.count不';涡旋颤振
在我的应用程序中,我将gridview.count放在列小部件中,但gridview.count不会滚动并在底部溢出,所以请给出一些建议 这是我的密码Android gridview.count不';涡旋颤振,android,ios,flutter,gridview,overflow,Android,Ios,Flutter,Gridview,Overflow,在我的应用程序中,我将gridview.count放在列小部件中,但gridview.count不会滚动并在底部溢出,所以请给出一些建议 这是我的密码 @override Widget build(BuildContext context) { return Stack( children: <Widget>[ Image.asset( "images/background.png", height: MediaQuery
@override
Widget build(BuildContext context) {
return Stack(
children: <Widget>[
Image.asset(
"images/background.png",
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
fit: BoxFit.fill,
),
Scaffold(
backgroundColor: Color(0x00000000),
body: Center(
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Container(
child: Padding(
padding: EdgeInsets.only(top: 50,bottom: 10),
child: Row(
children: <Widget>[
Spacer(flex: 2),
Text(
'Interests',
textAlign: TextAlign.center,
overflow: TextOverflow.ellipsis,
maxLines: 1,
style: TextStyle(
color: Color(0xFF0066CB),
fontSize: 20.0,
),
),
Spacer(),
Expanded(
child:SvgPicture.asset(
"images/vector.svg",
height: 30.0,
width: 30.0,
),
)
],
),
),
),
Padding(
padding: EdgeInsets.only(top: 10,bottom: 90,left: 10,right: 10),
child: GridView.count(
scrollDirection: Axis.vertical,
crossAxisCount: 3,
crossAxisSpacing: 5.0,
mainAxisSpacing: 5.0,
shrinkWrap: true,
children: List.generate(20, (index) {
return Padding(
padding: EdgeInsets.all(5.0),
child: Container(
child: SvgPicture.asset(
"images/register_top_logo_new.svg",
),
padding: EdgeInsets.all(20.0),
height: 135.0,
width: 135.0,
decoration: BoxDecoration(
border: Border.all(
width: 1.0,
color: Color(0xFFF9AD16),
),
),
),
);
},
),
),
),
],
),
),
),
],
);
}
@覆盖
小部件构建(构建上下文){
返回堆栈(
儿童:[
影像资产(
“images/background.png”,
高度:MediaQuery.of(context).size.height,
宽度:MediaQuery.of(context).size.width,
fit:BoxFit.fill,
),
脚手架(
背景颜色:颜色(0x00000000),
正文:中(
子:列(
mainAxisAlignment:mainAxisAlignment.start,
crossAxisAlignment:crossAxisAlignment.center,
儿童:[
容器(
孩子:填充(
填充:仅限边缘设置(顶部:50,底部:10),
孩子:排(
儿童:[
垫片(挠性:2),
正文(
"利益",,
textAlign:textAlign.center,
溢出:TextOverflow.省略号,
maxLines:1,
样式:TextStyle(
颜色:颜色(0xFF0066CB),
字体大小:20.0,
),
),
垫片(),
扩大(
子项:SvgPicture.asset(
“images/vector.svg”,
身高:30.0,
宽度:30.0,
),
)
],
),
),
),
填充物(
填充:仅限边集(顶部:10,底部:90,左侧:10,右侧:10),
子项:GridView.count(
滚动方向:轴垂直,
交叉轴计数:3,
交叉轴间距:5.0,
主轴间距:5.0,
收缩膜:对,
子项:List.generate(20,(索引){
返回填充(
填充:所有边缘设置(5.0),
子:容器(
子项:SvgPicture.asset(
“images/register\u top\u logo\u new.svg”,
),
填充:所有边缘设置(20.0),
身高:135.0,
宽度:135.0,
装饰:盒子装饰(
边界:边界(
宽度:1.0,
颜色:颜色(0xFFF9AD16),
),
),
),
);
},
),
),
),
],
),
),
),
],
);
}
这是我运行应用程序时得到的日志
I/flutter (16748): The relevant error-causing widget was:
I/flutter (16748): Column
I/flutter (16748): file:///C:/Users/mayur/AndroidStudioProjects/flutter/webinar-mobile/lib/activities/interests_activity.dart:30:22
I/flutter (16748):
I/flutter (16748): The overflowing RenderFlex has an orientation of Axis.vertical.
I/flutter (16748): The edge of the RenderFlex that is overflowing has been marked in the rendering with a yellow and
I/flutter (16748): black striped pattern. This is usually caused by the contents being too big for the RenderFlex.
I/flutter (16748): Consider applying a flex factor (e.g. using an Expanded widget) to force the children of the
I/flutter (16748): RenderFlex to fit within the available space instead of being sized to their natural size.
I/flutter (16748): This is considered an error condition because it indicates that there is content that cannot be
I/flutter (16748): seen. If the content is legitimately bigger than the available space, consider clipping it with a
I/flutter (16748): ClipRect widget before putting it in the flex, or using a scrollable container rather than a Flex,
I/flutter (16748): like a ListView.
I/flutter (16748): The specific RenderFlex in question is: RenderFlex#42dda relayoutBoundary=up5 OVERFLOWING:
I/flutter (16748): needs compositing
I/flutter (16748): creator: Column ← Center ← _BodyBuilder ← MediaQuery ← LayoutId-[<_ScaffoldSlot.body>] ←
I/flutter (16748): CustomMultiChildLayout ← AnimatedBuilder ← DefaultTextStyle ← AnimatedDefaultTextStyle ←
I/flutter (16748): _InkFeatures-[GlobalKey#417d7 ink renderer] ← NotificationListener<LayoutChangedNotification> ←
I/flutter (16748): PhysicalModel ← ⋯
I/flutter (16748): parentData: offset=Offset(0.0, 0.0) (can use size)
I/flutter (16748): constraints: BoxConstraints(0.0<=w<=360.0, 0.0<=h<=640.0)
I/flutter (16748): size: Size(360.0, 640.0)
I/flutter (16748): direction: vertical
I/flutter (16748): mainAxisAlignment: start
I/flutter (16748): mainAxisSize: max
I/flutter (16748): crossAxisAlignment: center
I/flutter (16748): verticalDirection: down
I/flutter (16748): ◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤◢◤
I/flutter (16748): ════════════════════════════════════════════════════════════════════════════════════════════════════
I/flutter (16748): unhandled element metadata; Picture key: AssetBundlePictureKey(bundle: PlatformAssetBundle#bcd18(), name: "images/register_top_logo_new.svg", colorFilter: null)
I/flatter(16748):导致错误的相关小部件是:
I/颤振(16748):立柱
I/颤振(16748):file:///C:/Users/mayur/AndroidStudioProjects/flutter/webinar-移动/lib/activities/interests\u activity.dart:30:22
I/颤振(16748):
I/颤振(16748):溢出的RenderFlex具有轴垂直方向。
I/flatter(16748):溢出的RenderFlex的边缘在渲染中用黄色和黄色标记
I/颤振(16748):黑色条纹图案。这通常是由于RenderFlex的内容太大造成的。
I/flflt(16748):考虑应用Flex因子(例如使用扩展小部件)来强迫孩子们
I/颤振(16748):RenderFlex适合可用空间,而不是按照其自然大小进行调整。
I/颤振(16748):这被认为是一种错误情况,因为它表明存在无法识别的内容
I/颤振(16748):可见。如果内容合法地大于可用空间,考虑将其剪辑为
I/flatter(16748):将ClipRect小部件放入flex或使用可滚动容器而不是flex之前,
I/flatter(16748):像一个列表视图。
I/颤振(16748):所讨论的特定RenderFlex是:RenderFlex#42dda relayoutBoundary=up5溢出:
I/颤振(16748):需要合成
I/flatter(16748):创建者:列← 居中← _健美运动员← MediaQuery← LayoutId-[]←
I/颤振(16748):自定义多子女布局← 动画生成器← DefaultTextStyle← 动画默认文本样式←
I/flatter(16748):_InkFeatures-[GlobalKey 417d7墨水渲染器]← 通知侦听器←
I/颤振(16748):物理模型← ⋯
I/颤振(16748):父数据:偏移=偏移(0.0,0.0)(可以使用大小)
I/flatter(16748):约束:框约束(0.0AddSingleChildScrollView
OverColumn
,它将滚动内部GridView也添加
物理:NeverScrollableScrollPhysics()
,内部
GridView.count(
//.... existing code
physics: NeverScrollableScrollPhysics(),
)
这是因为Column和Gridview都占据了屏幕的全部高度,所以这里应该停止滚动。因此,使用NeverScrollableScrollPhysics
,我们告诉GridView不要滚动,这样父部件就可以滚动
代码:
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text("ListView Sample"),
),
body: Stack(
children: <Widget>[
Image.asset(
"images/background.png",
height: MediaQuery.of(context).size.height,
width: MediaQuery.of(context).size.width,
fit: BoxFit.fill,
),
Scaffold(
backgroundColor: Color(0x00000000),
body: Center(
child: SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.center,
children: <Widget>[
Container(
child: Padding(
padding: EdgeInsets.only(top: 50, bottom: 10),
child: Row(
children: <Widget>[
Spacer(flex: 2),
Text(
'Interests',
textAlign: TextAlign.center,
overflow: TextOverflow.ellipsis,
maxLines: 1,
style: TextStyle(
color: Color(0xFF0066CB),
fontSize: 20.0,
),
),
Spacer(),
Expanded(
child: Container(
height: 30.0,
width: 30.0,
),
)
],
),
),
),
Padding(
padding: EdgeInsets.only(
top: 10, bottom: 90, left: 10, right: 10),
child: GridView.count(
scrollDirection: Axis.vertical,
crossAxisCount: 3,
crossAxisSpacing: 5.0,
mainAxisSpacing: 5.0,
shrinkWrap: true,
physics: NeverScrollableScrollPhysics(),
children: List.generate(
20,
(index) {
return Padding(
padding: EdgeInsets.all(5.0),
child: Container(
padding: EdgeInsets.all(20.0),
height: 135.0,
width: 135.0,
decoration: BoxDecoration(
border: Border.all(
width: 1.0,
color: Color(0xFFF9AD16),
),
),
),
);
},
),
),
),
],
),
),
),
),
],
),
);
}
@覆盖
小部件构建(构建上下文){
返回脚手架(
appBar:appBar(
标题:文本(“列表视图示例”),
),
主体:堆栈(
儿童:[
影像资产(
“images/background.png”,
高度:MediaQuery.of(context).size.height,
宽度:MediaQuery.of(context).size.width,
fit:BoxFit.fill,
),
脚手架(
背景颜色:颜色(0x00000000),
正文:中(
子:SingleChildScrollView(
子:列(
mainAxisAlignment:mainAxisAlignment.start,
铬
Expanded(
child: Padding(
padding: EdgeInsets.only(top: 10,bottom: 90,left: 10,right: 10),
child: GridView.count(
scrollDirection: Axis.vertical,
crossAxisCount: 3,
crossAxisSpacing: 5.0,
mainAxisSpacing: 5.0,
shrinkWrap: true,
children: List.generate(20, (index) {
return Padding(
padding: EdgeInsets.all(5.0),
child: Container(
child: SvgPicture.asset(
"images/register_top_logo_new.svg",
),
padding: EdgeInsets.all(20.0),
height: 135.0,
width: 135.0,
decoration: BoxDecoration(
border: Border.all(
width: 1.0,
color: Color(0xFFF9AD16),
),
),
),
);
},
),
),
),
)