Flutter实战视频-移动电商-27.列表页_现有Bug修复和完善
27.列表页_现有Bug修复和完善
小解决小bug
默认右侧的小类没有被加载
数据加载完成后,就list的第一个子对象传递给provide进行赋值,这样右侧的小类就刷新了数据
默认加载了第一个类别
调整颜色
对比图片调整下颜色
这里的参数r:就是red红色
g:green绿色
b:blue蓝色
opacity:就是透明度
最终修改成颜色:
Color.fromRGBO(236, 236, 236, 1.0)
全部
点击类别的时候默认有一个全部,我们的数据里面默认是没有这个全部的。这就需要我们自己把这个子类加上
我们在Provide的类里面去实现。先声明一个BxMallSubDto的实体,然后字段都赋值,加入到childCategoryList里面。
最后childCategoryList再把传递过来的list也加上值
这样我们的全部的效果就出来了。
最终代码:
import 'package:flutter/material.dart'; import '../service/service_method.dart'; import 'dart:convert'; import '../model/category.dart'; import 'package:flutter_screenutil/flutter_screenutil.dart'; import 'package:provide/provide.dart'; import '../provide/child_category.dart'; class CategoryPage extends StatefulWidget { @override _CategoryPageState createState() => _CategoryPageState(); } class _CategoryPageState extends State<CategoryPage> { @override Widget build(BuildContext context) { //_getCategory(); return Scaffold( appBar: AppBar(title: Text('商品分类'),), body: Container( child: Row( children: <Widget>[ LeftCategoryNav(), Column( children: <Widget>[ RightCategoryNav() ], ) ], ), ), ); } } //左侧大类导航 class LeftCategoryNav extends StatefulWidget { @override _LeftCategoryNavState createState() => _LeftCategoryNavState(); } class _LeftCategoryNavState extends State<LeftCategoryNav> { List list=[]; var listIndex=0; @override void initState() { super.initState(); _getCategory();//请求接口的数据 } @override Widget build(BuildContext context) { return Container( width: ScreenUtil().setWidth(180), decoration: BoxDecoration( border: Border( right: BorderSide(width:1.0,color: Colors.black12),//有边框 ) ), child: ListView.builder( itemCount: list.length, itemBuilder: (contex,index){ return _leftInkWell(index); }, ), ); } Widget _leftInkWell(int index){ bool isClick=false; isClick=(index==listIndex)?true:false; return InkWell( onTap: (){ setState(() { listIndex=index; }); var childList=list[index].bxMallSubDto;//当前大类的子类的列表 Provide.value<ChildCategory>(context).getChildCategory(childList); }, child: Container( height: ScreenUtil().setHeight(100), padding: EdgeInsets.only(left:10.0,top:10.0), decoration: BoxDecoration( color: isClick?Color.fromRGBO(236, 236, 236, 1.0): Colors.white, border: Border( bottom: BorderSide(width: 1.0,color: Colors.black12) ) ), child: Text( list[index].mallCategoryName, style: TextStyle(fontSize: ScreenUtil().setSp(28)),//设置字体大小,为了兼容使用setSp ), ), ); } void _getCategory() async{ await request('getCategory').then((val){ var data=json.decode(val.toString()); //print(data); CategoryModel category= CategoryModel.fromJson(data); setState(() { list=category.data; }); Provide.value<ChildCategory>(context).getChildCategory(list[0].bxMallSubDto); }); } } class RightCategoryNav extends StatefulWidget { @override _RightCategoryNavState createState() => _RightCategoryNavState(); } class _RightCategoryNavState extends State<RightCategoryNav> { //List list = ['名酒','宝丰','北京二锅头','舍得','五粮液','茅台','散白']; @override Widget build(BuildContext context) { return Provide<ChildCategory>( builder: (context,child,childCategory){ return Container( height: ScreenUtil().setHeight(80), width: ScreenUtil().setWidth(570),//总的宽度是750 -180 decoration: BoxDecoration( color: Colors.white,//白色背景 border: Border( bottom: BorderSide(width: 1.0,color: Colors.black12)//边界线 ) ), child: ListView.builder( scrollDirection: Axis.horizontal, itemCount: childCategory.childCategoryList.length, itemBuilder: (context,index){ return _rightInkWell(childCategory.childCategoryList[index]); }, ), ); } ); } Widget _rightInkWell(BxMallSubDto item){ return InkWell( onTap: (){},//事件留空 child: Container(//什么都加一个container,这样好布局 padding: EdgeInsets.fromLTRB(5.0, 10.0, 5.0, 10.0),//上下是10 左右是5.0 child: Text( item.mallSubName, style:TextStyle(fontSize: ScreenUtil().setSp(28)), ), ), ); } }
provide/child_category.dart
import 'package:flutter/material.dart'; import '../model/category.dart'; class ChildCategory with ChangeNotifier{ List<BxMallSubDto> childCategoryList=[]; getChildCategory(List<BxMallSubDto> list){ BxMallSubDto all=BxMallSubDto(); all.mallCategoryId="00"; all.mallCategoryId="00"; all.comments="null"; all.mallSubName='全部'; childCategoryList=[all]; //childCategoryList=list; childCategoryList.addAll(list); notifyListeners();//监听 } }