这是我的第一篇博客，测试文章

其他 2019-04-19 00:08:01 阅读次数: 0

大家好，我是一名flutter爱好者，ahyang

import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:baixingg/service/service_method.dart';
import 'package:baixingg/model/category.dart';
import 'package:baixingg/model/goods_list.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:provide/provide.dart';
import 'package:baixingg/provide/child_category.dart';
import 'package:baixingg/provide/category_goods_list.dart';

class CategoryPage extends StatefulWidget {
  @override
  _CategoryPageState createState() => _CategoryPageState();
}

class _CategoryPageState extends State<CategoryPage> {
  String _data = '加载中';
  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text('商品分类'),
        centerTitle: true,
        elevation: 0,
      ),
      body: Row(
        children: <Widget>[
          LeftCategoryNav(),
          Column(
            children: <Widget>[
              RightCategoryNav(),
              CategoryGoodsList(),
            ],
          ),
        ],
      ),
    );
  }
}

// 左侧大类导航
class LeftCategoryNav extends StatefulWidget {
  @override
  _LeftCategoryState createState() => _LeftCategoryState();
}

class _LeftCategoryState extends State<LeftCategoryNav> {
  List list = List();
  var listIndex = 0;

  void initState() {
    super.initState();
    _getCategory();
    getGoodsList();
  }

  @override
  Widget build(BuildContext context) {
    return Container(
      width: ScreenUtil().setWidth(180),
      decoration: BoxDecoration(
          border: Border(
        right: BorderSide(width: 1, color: Colors.black12),
      )),
      child: ListView.builder(
        itemCount: list.length,
        itemBuilder: (context, 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;
        var categoryId = list[index].mallCategoryId;
        Provide.value<ChildCategory>(context)
            .getChildCategory(childList, categoryId);
        getGoodsList(categoryId: categoryId);
      },
      child: Container(
        height: ScreenUtil().setHeight(100),
        padding: EdgeInsets.only(left: 10, top: 20),
        decoration: BoxDecoration(
            color: isClick ? Color.fromRGBO(236, 236, 236, 1.0) : Colors.white,
            border: Border(
              bottom: BorderSide(width: 1, color: Colors.black12),
            )),
        child: Text(
          list[index].mallCategoryName,
          style: TextStyle(
            fontSize: ScreenUtil().setSp(28),
          ),
        ),
      ),
    );
  }

  _getCategory() async {
    await request('getCategory').then((val) {
      var data = json.decode(val.toString());
      CategoryModle category = CategoryModle.fromJson(data);
      setState(() {
        list = category.data;
      });
      Provide.value<ChildCategory>(context)
          .getChildCategory(list[0].bxMallSubDto, list[0].mallCategoryId);
    });
  }

  getGoodsList({String categoryId}) {
    var data = {
      'categoryId': categoryId == null ? '4' : categoryId,
      'categorySubId': '',
      'page': 1,
    };

    request('getMallGoods', formData: data).then((val) {
      var data = json.decode(val.toString());
      CategoryGoodsListModel _listModel = CategoryGoodsListModel.fromJson(data);
      Provide.value<CategoryGoodsListProvide>(context)
          .getGoodsList(_listModel.data);
      // setState(() {
      //   list = _listModel.data;
      // });
    });
  }
}

// 顶部状态管理分类
class RightCategoryNav extends StatefulWidget {
  @override
  _RightCategoryNavState createState() => _RightCategoryNavState();
}

class _RightCategoryNavState extends State<RightCategoryNav> {
  // List list = ['零度', '雪花', '动力', '名酒', '白酒', '红酒', '烈酒', '葡萄酒'];

  @override
  Widget build(BuildContext context) {
    return Provide<ChildCategory>(
      builder: (context, child, childCategory) {
        return Container(
          height: ScreenUtil().setHeight(80),
          width: ScreenUtil().setWidth(570),
          child: ListView.builder(
            scrollDirection: Axis.horizontal,
            itemCount: childCategory.childCategoryList.length,
            itemBuilder: (context, index) {
              return _rightInWell(
                  index, childCategory.childCategoryList[index]);
            },
          ),
          decoration: BoxDecoration(
            color: Colors.white,
            border: Border(
              bottom: BorderSide(
                width: 1,
                color: Colors.black12,
              ),
            ),
          ),
        );
      },
    );
  }

  Widget _rightInWell(int index, BxMallSubDto item) {
    bool isClick = false;
    isClick = (index == Provide.value<ChildCategory>(context).childIndex)
        ? true
        : false;

    return InkWell(
      onTap: () {
        Provide.value<ChildCategory>(context).changeChildIndex(index, item.mallSubId);
        getGoodsList(item.mallSubId);
      },
      child: Container(
        padding: EdgeInsets.fromLTRB(5.0, 10.0, 5.0, 10.0),
        child: Text(
          item.mallSubName,
          style: TextStyle(
              fontSize: ScreenUtil().setSp(28),
              color: isClick ? Colors.pink : null),
        ),
      ),
    );
  }

  getGoodsList(String categorySubId) {
    var data = {
      'categoryId': Provide.value<ChildCategory>(context).categoryId,
      'categorySubId': categorySubId,
      'page': 1,
    };

    request('getMallGoods', formData: data).then((val) {
      var data = json.decode(val.toString());
      CategoryGoodsListModel _listModel = CategoryGoodsListModel.fromJson(data);
      if (_listModel.data == null) {
        Provide.value<CategoryGoodsListProvide>(context).getGoodsList([]);
      } else {
        Provide.value<CategoryGoodsListProvide>(context)
            .getGoodsList(_listModel.data);
      }
      // setState(() {
      //   list = _listModel.data;
      // });
    });
  }
}

// 商品列表，可以上拉加载
class CategoryGoodsList extends StatefulWidget {
  @override
  _CategoryGoodsListState createState() => _CategoryGoodsListState();
}

class _CategoryGoodsListState extends State<CategoryGoodsList> {
  // List list = [];

  @override
  void initState() {
    super.initState();
    // getGoodsList();
  }

  @override
  Widget build(BuildContext context) {
    return Provide<CategoryGoodsListProvide>(
      builder: (context, child, data) {
        if(data.goodsList.length > 0) {
          return Expanded(
          child: Container(
            width: ScreenUtil().setWidth(570),
            child: ListView.builder(
              itemCount: data.goodsList.length,
              itemBuilder: (context, index) {
                return _listView(data.goodsList, index);
              },
            ),
          ),
        );
        } else {
          return Text('没有数据，嗯好义熙');
        }
      },
    );
  }

  Widget _goodsImage(newList, index) {
    return Container(
      padding: EdgeInsets.only(left: 10),
      width: ScreenUtil().setWidth(200),
      child: Image.network(newList[index].image),
    );
  }

  Widget _goodsName(newList, index) {
    return Container(
      padding: EdgeInsets.only(left: 10),
      width: ScreenUtil().setWidth(370),
      child: Text(
        newList[index].goodsName,
        maxLines: 2,
        overflow: TextOverflow.ellipsis,
        style: TextStyle(
          fontSize: ScreenUtil().setSp(28),
        ),
      ),
    );
  }

  Widget _goodsPrice(newList, index) {
    return Container(
      width: ScreenUtil().setWidth(370),
      margin: EdgeInsets.only(top: 20),
      padding: EdgeInsets.only(left: 10),
      child: Row(
        children: <Widget>[
          Text(
            '价格：￥${newList[index].presentPrice}',
            style: TextStyle(
              fontSize: ScreenUtil().setSp(30),
              color: Colors.pink,
            ),
          ),
          Text(
            '${newList[index].oriPrice}',
            style: TextStyle(
              color: Colors.black26,
              decoration: TextDecoration.lineThrough,
            ),
          )
        ],
      ),
    );
  }

  Widget _listView(newList, index) {
    return InkWell(
      child: Container(
        padding: EdgeInsets.only(top: 10, bottom: 10),
        decoration: BoxDecoration(
          border: Border(
            bottom: BorderSide(
              width: 1,
              color: Colors.black12,
            ),
          ),
        ),
        child: Row(
          children: <Widget>[
            _goodsImage(newList, index),
            Column(
              children: <Widget>[
                _goodsName(newList, index),
                _goodsPrice(newList, index),
              ],
            ),
          ],
        ),
      ),
      onTap: () {},
    );
  }
}

 这是分割线，

import 'dart:convert';
import 'package:flutter/material.dart';
import 'package:baixingg/service/service_method.dart';
import 'package:baixingg/model/category.dart';
import 'package:baixingg/model/goods_list.dart';
import 'package:flutter_screenutil/flutter_screenutil.dart';
import 'package:provide/provide.dart';
import 'package:baixingg/provide/child_category.dart';
import 'package:baixingg/provide/category_goods_list.dart';

class CategoryPage extends StatefulWidget {
@override
_CategoryPageState createState() => _CategoryPageState();
}

class _CategoryPageState extends State<CategoryPage> {
String _data = '加载中';
@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('商品分类'),
centerTitle: true,
elevation: 0,
),
body: Row(
children: <Widget>[
LeftCategoryNav(),
Column(
children: <Widget>[
RightCategoryNav(),
CategoryGoodsList(),
],
),
],
),
);
}
}

// 左侧大类导航
class LeftCategoryNav extends StatefulWidget {
@override
_LeftCategoryState createState() => _LeftCategoryState();
}

class _LeftCategoryState extends State<LeftCategoryNav> {
List list = List();
var listIndex = 0;

void initState() {
super.initState();
_getCategory();
getGoodsList();
}

@override
Widget build(BuildContext context) {
return Container(
width: ScreenUtil().setWidth(180),
decoration: BoxDecoration(
border: Border(
right: BorderSide(width: 1, color: Colors.black12),
)),
child: ListView.builder(
itemCount: list.length,
itemBuilder: (context, 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;
var categoryId = list[index].mallCategoryId;
Provide.value<ChildCategory>(context)
.getChildCategory(childList, categoryId);
getGoodsList(categoryId: categoryId);
},
child: Container(
height: ScreenUtil().setHeight(100),
padding: EdgeInsets.only(left: 10, top: 20),
decoration: BoxDecoration(
color: isClick ? Color.fromRGBO(236, 236, 236, 1.0) : Colors.white,
border: Border(
bottom: BorderSide(width: 1, color: Colors.black12),
)),
child: Text(
list[index].mallCategoryName,
style: TextStyle(
fontSize: ScreenUtil().setSp(28),
),
),
),
);
}

_getCategory() async {
await request('getCategory').then((val) {
var data = json.decode(val.toString());
CategoryModle category = CategoryModle.fromJson(data);
setState(() {
list = category.data;
});
Provide.value<ChildCategory>(context)
.getChildCategory(list[0].bxMallSubDto, list[0].mallCategoryId);
});
}

getGoodsList({String categoryId}) {
var data = {
'categoryId': categoryId == null ? '4' : categoryId,
'categorySubId': '',
'page': 1,
};

request('getMallGoods', formData: data).then((val) {
var data = json.decode(val.toString());
CategoryGoodsListModel _listModel = CategoryGoodsListModel.fromJson(data);
Provide.value<CategoryGoodsListProvide>(context)
.getGoodsList(_listModel.data);
// setState(() {
// list = _listModel.data;
// });
});
}
}

// 顶部状态管理分类
class RightCategoryNav extends StatefulWidget {
@override
_RightCategoryNavState createState() => _RightCategoryNavState();
}

class _RightCategoryNavState extends State<RightCategoryNav> {
// List list = ['零度', '雪花', '动力', '名酒', '白酒', '红酒', '烈酒', '葡萄酒'];

@override
Widget build(BuildContext context) {
return Provide<ChildCategory>(
builder: (context, child, childCategory) {
return Container(
height: ScreenUtil().setHeight(80),
width: ScreenUtil().setWidth(570),
child: ListView.builder(
scrollDirection: Axis.horizontal,
itemCount: childCategory.childCategoryList.length,
itemBuilder: (context, index) {
return _rightInWell(
index, childCategory.childCategoryList[index]);
},
),
decoration: BoxDecoration(
color: Colors.white,
border: Border(
bottom: BorderSide(
width: 1,
color: Colors.black12,
),
),
),
);
},
);
}

Widget _rightInWell(int index, BxMallSubDto item) {
bool isClick = false;
isClick = (index == Provide.value<ChildCategory>(context).childIndex)
? true
: false;

return InkWell(
onTap: () {
Provide.value<ChildCategory>(context).changeChildIndex(index, item.mallSubId);
getGoodsList(item.mallSubId);
},
child: Container(
padding: EdgeInsets.fromLTRB(5.0, 10.0, 5.0, 10.0),
child: Text(
item.mallSubName,
style: TextStyle(
fontSize: ScreenUtil().setSp(28),
color: isClick ? Colors.pink : null),
),
),
);
}

getGoodsList(String categorySubId) {
var data = {
'categoryId': Provide.value<ChildCategory>(context).categoryId,
'categorySubId': categorySubId,
'page': 1,
};

request('getMallGoods', formData: data).then((val) {
var data = json.decode(val.toString());
CategoryGoodsListModel _listModel = CategoryGoodsListModel.fromJson(data);
if (_listModel.data == null) {
Provide.value<CategoryGoodsListProvide>(context).getGoodsList([]);
} else {
Provide.value<CategoryGoodsListProvide>(context)
.getGoodsList(_listModel.data);
}
// setState(() {
// list = _listModel.data;
// });
});
}
}

// 商品列表，可以上拉加载
class CategoryGoodsList extends StatefulWidget {
@override
_CategoryGoodsListState createState() => _CategoryGoodsListState();
}

class _CategoryGoodsListState extends State<CategoryGoodsList> {
// List list = [];

@override
void initState() {
super.initState();
// getGoodsList();
}

@override
Widget build(BuildContext context) {
return Provide<CategoryGoodsListProvide>(
builder: (context, child, data) {
if(data.goodsList.length > 0) {
return Expanded(
child: Container(
width: ScreenUtil().setWidth(570),
child: ListView.builder(
itemCount: data.goodsList.length,
itemBuilder: (context, index) {
return _listView(data.goodsList, index);
},
),
),
);
} else {
return Text('没有数据，嗯好义熙');
}
},
);
}

Widget _goodsImage(newList, index) {
return Container(
padding: EdgeInsets.only(left: 10),
width: ScreenUtil().setWidth(200),
child: Image.network(newList[index].image),
);
}

Widget _goodsName(newList, index) {
return Container(
padding: EdgeInsets.only(left: 10),
width: ScreenUtil().setWidth(370),
child: Text(
newList[index].goodsName,
maxLines: 2,
overflow: TextOverflow.ellipsis,
style: TextStyle(
fontSize: ScreenUtil().setSp(28),
),
),
);
}

Widget _goodsPrice(newList, index) {
return Container(
width: ScreenUtil().setWidth(370),
margin: EdgeInsets.only(top: 20),
padding: EdgeInsets.only(left: 10),
child: Row(
children: <Widget>[
Text(
'价格：￥${newList[index].presentPrice}',
style: TextStyle(
fontSize: ScreenUtil().setSp(30),
color: Colors.pink,
),
),
Text(
'${newList[index].oriPrice}',
style: TextStyle(
color: Colors.black26,
decoration: TextDecoration.lineThrough,
),
)
],
),
);
}

Widget _listView(newList, index) {
return InkWell(
child: Container(
padding: EdgeInsets.only(top: 10, bottom: 10),
decoration: BoxDecoration(
border: Border(
bottom: BorderSide(
width: 1,
color: Colors.black12,
),
),
),
child: Row(
children: <Widget>[
_goodsImage(newList, index),
Column(
children: <Widget>[
_goodsName(newList, index),
_goodsPrice(newList, index),
],
),
],
),
),
onTap: () {},
);
}
}

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