> Launching lib\main.dart on MotoG3 TE in debug mode... Running Gradle
任务'assembleDebug'...√内置 build \ app \ outputs \ flutter-apk \ app-debug.apk。等待MotoG3 TE 报告其意见...侦听调试服务 ws：//127.0.0.1：55032 / k8hU96apsuA = / ws正在将文件同步到设备MotoG3 TE ...
════════渲染库捕获异常 ══════════════════════════════════════════════════ liver SliverGeometry 无效：“ scrollExtent”为负数。相关 导致错误的小部件是：GridView 文件：/// C：/Users/amitc/AndroidStudioProjects/practice/lib/new/widgets/widget.dart：24：21 ══════════════════════════════════════════════════ ══════════════════════════════════════════════════
════════渲染库捕获异常 ══════════════════════════════════════════════════ liver SliverGeometry 无效：“ scrollExtent”为负数。 RenderSliver 返回的违规几何图形为：RenderSliverPadding＃d7319 relayoutBoundary = up23 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE parentData：layoutOffset = None（可以使用 尺寸）约束：SliverConstraints（AxisDirection.down， GrowthDirection.forward，ScrollDirection.idle，scrollOffset：0.0， missingPaintExtent：Infinity，crossAxisExtent：328.0， crossAxisDirection：AxisDirection.right，viewportMainAxisExtent： Infinity，remainingCacheExtent：Infinity，cacheOrigin：-0.0）
几何：SliverGeometry（scrollExtent：-4.0，隐藏，maxPaintExtent： -4.0） scrollExtent：-4.0 隐 maxPaintExtent：-4.0填充：EdgeInsets.zero textDirection：ltr子级：RenderSliverGrid＃8eeb1 relayoutBoundary = up24 NEEDS-PAINT parentData：paintOffset = Offset（0.0，0.0）（可以使用大小） 约束：SliverConstraints（AxisDirection.down，GrowthDirection.forward，ScrollDirection.idle，scrollOffset：0.0， missingPaintExtent：Infinity，crossAxisExtent：328.0， crossAxisDirection：AxisDirection.right，viewportMainAxisExtent： Infinity，remainingCacheExtent：Infinity，cacheOrigin：0.0） 几何：SliverGeometry（scrollExtent：-4.0，隐藏，maxPaintExtent：-4.0） scrollExtent：-4.0 隐 maxPaintExtent：-4.0 当前没有子级存在相关的引起错误的小部件是：GridView 文件：/// C：/Users/amitc/AndroidStudioProjects/practice/lib/new/widgets/widget.dart：24：21 发生以下异常时正在处理以下RenderObject： 发射：RenderSliverPadding＃d7319 relayoutBoundary = up23 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE parentData： layoutOffset =无（可以使用大小）约束： SliverConstraints（AxisDirection.down，GrowthDirection.forward， ScrollDirection.idle，scrollOffset：0.0，其余PaintExtent： 无限，crossAxisExtent：328.0，crossAxisDirection： AxisDirection.right，viewportMainAxisExtent：无穷大， missingCacheExtent：Infinity，cacheOrigin：-0.0）几何： SliverGeometry（scrollExtent：-4.0，隐藏，maxPaintExtent：-4.0） scrollExtent：-4.0 隐 maxPaintExtent：-4.0填充：EdgeInsets.zero textDirection：ltr子级：RenderSliverGrid＃8eeb1 relayoutBoundary = up24 NEEDS-PAINT parentData：paintOffset = Offset（0.0，0.0）（可以使用大小） 约束：SliverConstraints（AxisDirection.down，GrowthDirection.forward，ScrollDirection.idle，scrollOffset：0.0， missingPaintExtent：Infinity，crossAxisExtent：328.0， crossAxisDirection：AxisDirection.right，viewportMainAxisExtent： Infinity，remainingCacheExtent：Infinity，cacheOrigin：0.0） 几何：SliverGeometry（scrollExtent：-4.0，隐藏，maxPaintExtent：-4.0） scrollExtent：-4.0 隐 maxPaintExtent：-4.0 当前没有子级活动的RenderObject：RenderSliverPadding＃d7319 relayoutBoundary = up23 NEEDS-LAYOUT NEEDS-PAINT NEEDS-COMPOSITING-BITS-UPDATE parentData：layoutOffset = None（可以使用 尺寸）约束：SliverConstraints（AxisDirection.down， GrowthDirection.forward，ScrollDirection.idle，scrollOffset：0.0， missingPaintExtent：Infinity，crossAxisExtent：328.0， crossAxisDirection：AxisDirection.right，viewportMainAxisExtent： Infinity，remainingCacheExtent：Infinity，cacheOrigin：-0.0）
几何：SliverGeometry（scrollExtent：-4.0，隐藏，maxPaintExtent： -4.0） scrollExtent：-4.0 隐 maxPaintExtent：-4.0填充：EdgeInsets.zero textDirection：ltr子级：RenderSliverGrid＃8eeb1 relayoutBoundary = up24 NEEDS-PAINT parentData：paintOffset = Offset（0.0，0.0）（可以使用大小） 约束：SliverConstraints（AxisDirection.down，GrowthDirection.forward，ScrollDirection.idle，scrollOffset：0.0， missingPaintExtent：Infinity，crossAxisExtent：328.0， crossAxisDirection：AxisDirection.right，viewportMainAxisExtent： Infinity，remainingCacheExtent：Infinity，cacheOrigin：0.0） 几何：SliverGeometry（scrollExtent：-4.0，隐藏，maxPaintExtent：-4.0） scrollExtent：-4.0 隐 maxPaintExtent：-4.0 当前没有孩子live ══════════════════════════════════════════════════ ════════════渲染库捕获异常 ══════════════════════════════════════════════════ liver SliverGeometry 无效：“ scrollExtent”为负数。相关 导致错误的小部件是：GridView 文件：/// C：/Users/amitc/AndroidStudioProjects/practice/lib/new/widgets/widget.dart：24：21 ══════════════════════════════════════════════════ ══════════════════════════════════════════════════
这是代码[应用未显示预览。] [1]
import 'dart:convert';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:google_fonts/google_fonts.dart';
import 'package:practice/new/data/data.dart';
import 'package:practice/new/model/categorie_model.dart';
import 'package:practice/new/model/wallpaperModel.dart';
import 'package:practice/new/view/search.dart';
import 'package:practice/new/widgets/widget.dart';
import 'package:http/http.dart' as http;
class Home extends StatefulWidget {
@override
_HomeState createState() => _HomeState();
}
class _HomeState extends State<Home> {
List<CategorieModel> categories = new List();
List<WallpaperModel> wallpaper = new List();
TextEditingController searchController = new TextEditingController();
Future getTrendingWallpaper() async {
var responce = await http.get(
"https://api.pexels.com/v1/curated?per_page=80&page=1",
headers: {"Authorization": apiKey});
print(responce.body.toString());
Map<String, dynamic> jsonData = jsonDecode(responce.body);
jsonData["photos"].forEach((element) {
// print(element);
WallpaperModel wallpaperModel = new WallpaperModel();
wallpaperModel = WallpaperModel.fromMap(element);
wallpaper.add(wallpaperModel);
});
setState(() {});
}
@override
void initState() {
getTrendingWallpaper();
categories = getCategoris();
super.initState();
}
@override
Widget build(BuildContext context) {
return Scaffold(
backgroundColor: Colors.white,
appBar: AppBar(
title: brandName(),
elevation: 0.0,
),
body: SingleChildScrollView(
child: Container(
child: Column(
children: [
Container(
decoration: BoxDecoration(
color: Color(0xfff5f8fd),
borderRadius: BorderRadius.circular(30)),
margin: EdgeInsets.symmetric(horizontal: 24),
padding: EdgeInsets.symmetric(horizontal: 24),
child: Row(
children: [
Expanded(
child: TextField(
controller: searchController,
decoration: InputDecoration(
hintText: "search", border: InputBorder.none),
),
),
GestureDetector(
onTap: () {
Navigator.push( //enter to next page through this navigator need to change with
context,
MaterialPageRoute(
builder: (context) => Search(
searchQuery: searchController.text,
)));
},
child: Container(child: Icon(Icons.search)))
],
),
),
SizedBox(
height: 16,
),
Container(
height: 80,
child: ListView.builder(
padding: EdgeInsets.symmetric(horizontal: 24),
itemCount: categories.length,
shrinkWrap: false,
scrollDirection: Axis.horizontal,
itemBuilder: (BuildContext context, int index) {
return CategoriesTiles(
title: categories[index].categorieName,
imgUrl: categories[index].imgUrl,
);
}),
),
SizedBox(
height: 16,
),
wallPapersList(wallpaper: wallpaper, context: context)
],
),
),
),
);
}
}
class CategoriesTiles extends StatelessWidget {
final String imgUrl, title;
const CategoriesTiles({Key key, @required this.imgUrl, @required this.title})
: super(key: key);
@override
Widget build(BuildContext context) {
return Container(
margin: EdgeInsets.only(right: 4),
child: Stack(
children: [
ClipRRect(
borderRadius: BorderRadius.circular(18),
child: Image.network(
imgUrl,
height: 50,
width: 100,
fit: BoxFit.cover,
)),
Container(
decoration: BoxDecoration(
borderRadius: BorderRadius.circular(18),
color: Colors.black12,
),
height: 50,
width: 100,
alignment: Alignment.center,
child: Text(
title,
style: GoogleFonts.raleway(
color: Colors.white,
fontWeight: FontWeight.w800,
fontSize: 15),
),
)
],
),
);
}
}
[https://i.stack.imgur.com/lypXP.png] [2]