body: Container(
width: _maxScreenWidth,
child: SafeArea(
child:Form(
key: formKey,
child: SingleChildScrollView(
child: Column(
mainAxisAlignment: MainAxisAlignment.start,
crossAxisAlignment: CrossAxisAlignment.start,
children: [
Container(
height: 160.0,
padding: EdgeInsets.symmetric(vertical: 15.0,horizontal: 15),
child: CustomScrollView(
scrollDirection: Axis.horizontal,
slivers: <Widget>[
SliverPadding(
padding: const EdgeInsets.all(10),
sliver: _buildContent(urls),
)
],
),
),
SizedBox(height: 20.0,) ,
],
),
),
),
),
),
SliverGrid _buildContent(List<String> urls) {
return SliverGrid(
gridDelegate: SliverGridDelegateWithMaxCrossAxisExtent(
maxCrossAxisExtent: 150,
mainAxisSpacing: 10,
crossAxisSpacing: 10,
),
delegate: SliverChildBuilderDelegate(
(BuildContext context, int index) {
return PortfolioGalleryImageWidget(urls: urls[index],
onImageTap: () =>
Navigator.push(context,
_createGalleryDetail(urls, index),
),
);
},
childCount: urls.length,
),
);
}
错误
=============呈现库捕获到异常=====================================================performLayout()过程中引发了以下断言：SliverGeometry无效：；scrollExtent"；为负数。
返回有问题的几何体的RenderSliver为：RenderSliverGrid#ee36d relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-PAINT…parentData:paintOffset=偏移(0.0，0.0)(可以使用大小)…约束：SliverConstraints(AxisDirection.right，GrowthDirection.forward，ScrollDirection.idle，scrollOffset:0.0，remainingPaintExtent:371.4，crossSaxExtent:110.0，crossSAxisDirection:AxisDirection.down，viewportMainAxisExtent:381.4，remaining CacheExtent:621.4，cacheOrigin:0.0)…几何体：SliverGeometry(滚动范围：-10.0，隐藏，最大PaintExtent:-10.0)…滚动范围：-10.0隐藏的…最大绘画范围：-10.0…当前没有孩子导致错误的相关小部件是：SliverGridfile:///Users/gagansingh/FlutterProjects/firebase_app/lib/fullImageView/PortfolioGallarySubPage.dart:441:12当抛出异常时，这是堆栈：#0 SliverGeometry.debugAssertIsValid..verify(包：flutter/src/rerendering/slacp.dart:712:9)#1 SliverGeometry.debugAssertIsValid#2 SliverGeometry.debugAssertIsValid(软件包：flutter/src/rendering/slacp.dart:751:6)#3 RenderSliver.debugAssertDoesMeetConstrains(包：flutter/src/rendering/slacp.dart:1206:22)#4 RenderObject.layout.(包：flutter/src/rendering/object.dart:1787:9)。。。激发异常时正在处理以下RenderObject：RenderSiverGrid#ee36d relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-PAINT…parentData:paintOffset=偏移(0.0，0.0)(可以使用大小)…约束：SliverConstraints(AxisDirection.right，GrowthDirection.forward，ScrollDirection.idle，scrollOffset:0.0，remainingPaintExtent:371.4，crossSaxExtent:110.0，crossSAxisDirection:AxisDirection.down，viewportMainAxisExtent:381.4，remaining CacheExtent:621.4，cacheOrigin:0.0)…几何体：SliverGeometry(滚动范围：-10.0，隐藏，最大PaintExtent:-10.0)…滚动范围：-10.0隐藏的…最大绘画范围：-10.0…当前没有孩子RenderObject:RenderSliverGrid#ee36d relayoutBoundary=up2 NEEDS-LAYOUT NEEDS-PAINTparentData:paintOffset=偏移(0.0，0.0)(可以使用大小)约束：SliverConstraints(AxisDirection.right，GrowthDirection.forward，ScrollDirection.idle，scrollOffset:0.0，remainingPaintExtent:371.4，crossSaxExtent:110.0，crossSAxisDirection:AxisDirection.down，viewportMainAxisExtent:381.4，remainngCacheExtent:621.4，cacheOrigin:0.0)几何体：SliverGeometry(scrollExtent:-10.0，隐藏，maxPaintExtent:-10)滚动范围：-10.0隐藏的最大绘画范围：-10.0当前没有孩子
=============呈现库捕获到异常=====================================================SliverGeometry无效：；maxPaintExtent"；小于"；paintExtent"；。返回有问题的几何体的RenderSliver为：RenderSliverPadding#d3dd8 relayoutBoundary=up1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATEparentData:paintOffset=偏移(0.0，0.0)(可以使用大小)约束：SliverConstraints(AxisDirection.right、GrowthDirection.forward、ScrollDirection.idle、scrollOffset:0.0、remainingPaintExtent:381.4、crossAxisExtent:130.0、crossaxDirection:AxisDirection.down、viewportMainAxisExtent:381.4、remaining CacheExtent:631.4、cacheOrigin:0.0)几何体：SliverGeometry(滚动范围：10.0，paintExtent:20.0，maxPaintExtent:10.0，cacheExtent:20.00)scrollExtent:10.0油漆范围：20.0最大绘画范围：10.0cacheExtent:20.0填充：EdgeInsets.all(10.0)text方向：ltrchild:RenderSliverGrid#ee36d relayoutBoundary=up2 NEEDS-PAINTparentData:paintOffset=偏移(10.0，10.0)(可以使用大小)约束：SliverConstraints(AxisDirection.right，GrowthDirection.forward，ScrollDirection.idle，scrollOffset:0.0，remainingPaintExtent:371.4，crossSaxExtent:110.0，crossSAxisDirection:AxisDirection.down，viewportMainAxisExtent:381.4，remainngCacheExtent:621.4，cacheOrigin:0.0)几何体：SliverGeometry(scrollExtent:-10.0，隐藏，maxPaintExtent:-10)滚动范围：-10.0隐藏的最大绘画范围：-10.0当前没有孩子导致错误的相关小部件是：SliverPaddingfile:///Users/gagansingh/FlutterProjects/firebase_app/lib/fullImageView/PortfolioGallarySubPage.dart:182:29激发异常时正在处理以下RenderObject：RenderSiverPadding#d3dd8 relayoutBoundary=up1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATEparentData:paintOffset=偏移(0.0，0.0)(可以使用大小)约束：SliverConstraints(AxisDirection.right、GrowthDirection.forward、ScrollDirection.idle、scrollOffset:0.0、remainingPaintExtent:381.4、crossAxisExtent:130.0、crossaxDirection:AxisDirection.down、viewportMainAxisExtent:381.4、remaining CacheExtent:631.4、cacheOrigin:0.0)几何体：SliverGeometry(滚动范围：10.0，paintExtent:20.0，maxPaintExtent:10.0，cacheExtent:20.00)scrollExtent:10.0油漆范围：20.0最大绘画范围：10.0cacheExtent:20.0填充：EdgeInsets.all(10.0)text方向：ltrchild:RenderSliverGrid#ee36d relayoutBoundary=up2 NEEDS-PAINTparentData:paintOffset=偏移(10.0，10.0)(可以使用大小)约束：SliverConstraints(AxisDirection.right，GrowthDirection.forward，ScrollDirection.idle，scrollOffset:0.0，remainingPaintExtent:371.4，crossSaxExtent:110.0，crossSAxisDirection:AxisDirection.down，viewportMainAxisExtent:381.4，remainngCacheExtent:621.4，cacheOrigin:0.0)几何体：SliverGeometry(scrollExtent:-10.0，隐藏，maxPaintExtent:-10)滚动范围：-10.0隐藏的最大绘画范围：-10.0当前没有孩子RenderObject:RenderSiverPadding#d3dd8 relayoutBoundary=up1 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATEparentData:paintOffset=偏移(0.0，0.0)(可以使用大小)约束：SliverConstraints(AxisDirection.right、GrowthDirection.forward、ScrollDirection.idle、scrollOffset:0.0、remainingPaintExtent:381.4、crossAxisExtent:130.0、crossaxDirection:AxisDirection.down、viewportMainAxisExtent:381.4、remaining CacheExtent:631.4、cacheOrigin:0.0)几何体：SliverGeometry(滚动范围：10.0，paintExtent:20.0，maxPaintExtent:10.0，cacheExtent:20.00)scrollExtent:10.0油漆范围：20.0最大绘画范围：10.0cacheExtent:20.0填充：EdgeInsets.all(10.0)text方向：ltrchild:RenderSliverGrid#ee36d relayoutBoundary=up2 NEEDS-PAINTparentData:paintOffset=偏移(10.0，10.0)(可以使用大小)约束：SliverConstraints(AxisDirection.right，GrowthDirection.forward，ScrollDirection.idle，scrollOffset:0.0，remainingPaintExtent:371.4，crossSaxExtent:110.0，crossSAxisDirection:AxisDirection.down，viewportMainAxisExtent:381.4，remainngCacheExtent:621.4，cacheOrigin:0.0)几何体：SliverGeometry(scrollExtent:-10.0，隐藏，maxPaintExtent:-10)滚动范围：-10.0隐藏的最大绘画范围：-10.0当前没有孩子
=============呈现库捕获到异常=====================================================SliverGeometry无效：；maxPaintExtent"；小于"；paintExtent"；。
Remove:scrollDirection:Axis.horizontal，然后再加上物理学，你的问题就会得到解决。
CustomScrollView(
physics: const NeverScrollableScrollPhysics()
slivers: <Widget>[
SliverPadding(
padding: const EdgeInsets.all(10),
sliver: _buildContent(urls),
)