Flutter实战视频-移动电商-57.购物车_在Model中增加选中字段

 

先修改model类

model/cartInfo.dart类增加是否选中的属性

修改provide

修改UI部分pages/cart_page/cart_item.dart

 

 

测试效果

出现问题的原因，应该是在购物车内持久化的数据，没有isCheck这个新增加的属性，所以就报错了我们需要先点进去一个商品，把持久化的购物车数据清空掉，再重新添加购物车的持久化数据

然后重新添加几个商品到购物车内

 

最终代码

model/cartInfo.dart

class CartInfoModel {
  String goodsId;
  String goodsName;
  int count;
  double price;
  String images;
  bool isCheck;

  CartInfoModel(
      {this.goodsId, this.goodsName, this.count, this.price, this.images, this.isCheck});

  CartInfoModel.fromJson(Map<String, dynamic> json) {
    goodsId = json['goodsId'];
    goodsName = json['goodsName'];
    count = json['count'];
    price = json['price'];
    images = json['images'];
    isCheck = json['isCheck'];
  }

  Map<String, dynamic> toJson() {
    final Map<String, dynamic> data = new Map<String, dynamic>();
    data['goodsId'] = this.goodsId;
    data['goodsName'] = this.goodsName;
    data['count'] = this.count;
    data['price'] = this.price;
    data['images'] = this.images;
    data['isCheck'] = this.isCheck;
    return data;
  }
}

View Code