基于对象列表生成新卡

我有一个对象列表,有没有方法在卡片小部件上循环,以便对于这个列表中的每个对象,使用这个感兴趣的小部件的属性创建一张新的卡片。

下面的代码肯定不起作用,它只是一个示例,展示了我试图实现的目标背后的逻辑

//function declaration and body...
List<CardInfo> list = new List();
for (var i in cardInfo){ //cardInfo is a list of json created previously.
list.add(new CardInfo.fromJson(i));
    print (list); }//tested the list and it contains the objects I want
 return list;
}

//my widget{
    @override
      Widget build(BuildContext context) {
        return new Dismissible(
for (i in list){
            child:  new Card(
              child:
              new ListTile(leading: new Icon(Icons.star, color: Colors.yellowAccent,),
                title: new Text(list(i).field1),//field1 is a string in CardInfo
                subtitle: new Text(list(i).field2),//field2 is a string in CardInfo

这是可行的吗?

我知道如何将每个JSON转换为对象,然后直接处理对象,现在,loadData()函数在每次迭代中都会返回一个对象

_loadData() async {
  var url = 'myurl';
  var httpClient  = createHttpClient();
  var response =await httpClient.get(url);
  List cardInfo = JSON.decode(response.body);
  List<CardInfo> list = new List();
  for ( var i in cardInfo){
    var ci = new CardInfo.fromJson(i);

    list.add(new CardInfo.fromJson(i));

  return ci;
  }
  //return list;

}


....

那么,有没有办法设置我的类构造函数,使其允许我访问返回对象的字段?类似这样:

title: new Text(new CardInfo(_loadData()).field)

更新2:

@override
    Widget build(BuildContext context) {
      return new FutureBuilder(
          future: _loadData(),
          builder: (BuildContext context, AsyncSnapshot<List> jsonList){
            if (jsonList.hasData==true){
              var cardInfo = jsonList.data[0];//is this right ?
              print (cardInfo); 
              return new Dismissible(
                child: new Column(
                  children:
                  cardInfo.map(
                          (CardInfo info)=>
                      new Card(
                          child: new ListTile(leading: new Icon(Icons.star, color: Colors.yellowAccent,),
                            title: new Text(info.field),
                            subtitle: new Text("Subtitle"),)

                      ) ), ),....

  _loadData() async {
var url = 'myurl';
var httpClient = createHttpClient();
var response = await httpClient.get(url);
List cardInfo = JSON.decode(response.body);


List<CardInfo> list = new List();
for (var i in cardInfo) {


list.add(new CardInfo.fromJson(i));
}


return list;
}

我得到以下错误:

类“CardInfo”没有实例方法“map”。