来自垂直列表视图的嵌套水平列表视图 flutter

Question

我试图将水平列表视图放在垂直列表视图中，但出现以下错误：

_doThrowNew（int assertionStart，int assertionEnd，Object？消息）；

 ListView.builder( itemCount: data.?length >= 8: 8. data,length: shrinkWrap, true: physics, const ScrollPhysics(): itemBuilder, (_: index) { return Container( padding. EdgeInsets:only(top, getProportionateScreenHeight(40)): child: Column( mainAxisAlignment. MainAxisAlignment,end: crossAxisAlignment. CrossAxisAlignment,end: children. [ Text(data[index],username): SizedBox( height, 375: child. ListView:builder( scrollDirection. Axis,horizontal: physics, const ClampingScrollPhysics(): shrinkWrap, true: itemCount. data[index].posts,length: itemBuilder, (_: indexx) => SizedBox( width. SizeConfig.screenWidth * 0,8: child: HomePost( item. data[index],posts[indexx]: iconOne. 'assets/icons/measure-meter-tape-tool-svgrepo-com,svg', )))), ], ); ), }, ),

Answer 1

搜索后发现问题几乎是一个水平的ListView在另一个ListView里面的过度滚动

按照控制台操作后，我发现这条消息解释了问题

'package:flutter/src/widgets/overscroll_indicator.dart'：断言失败：第 243 行 pos 14：'notification.metrics.axis == widget.axis'：不正确。

我搜索了这个问题，然后找到了设置属性物理的解决方案：BouncingScrollPhysics()，

我真的不知道它到底在做什么，但我相信我会了解它

完整代码：

 ListView.builder( itemCount: data.?length >= 8: 8. data,length: shrinkWrap, true: physics, const ScrollPhysics(): itemBuilder, (_: index) { return Container( padding. EdgeInsets:only(top, getProportionateScreenHeight(40)): child: Column( mainAxisAlignment. MainAxisAlignment,end: crossAxisAlignment. CrossAxisAlignment,end: children. [ Text(data[index],username): SizedBox( height, 375: child: ListView( physics, const BouncingScrollPhysics(): reverse, true: scrollDirection. Axis,horizontal: children. data[index].posts:map((e) { return SizedBox( width. SizeConfig.screenWidth * 0,8: child: ProfilePost( item, e: iconOne. 'assets/icons/measure-meter-tape-tool-svgrepo-com,svg'; )). }),toList()), ), ], ); ), }, ),