dictionary - flutter : Mapping two lists toegther

Question

这里我只映射一个列表，但情况是我想将两个列表映射在一起，以便显示日期，然后显示照片，就像这里的图片一样。所以，我想知道如何制作 list1 和日期的映射，这是我拥有的两个列表。它们将只是我可以在脚手架主体中使用的一个列表？

List<Meal> _list1=[Meal(dis:'it is a chicken sandwichh',name: 'chekin filla'),
Meal(dis:'it is a chicken sandwichh',name: 'chekin filla'),
Meal(dis:'it is a chicken sandwichh',name: 'chekin filla'),
Meal(dis:'it is a chicken sandwichh',name: 'chekin filla'),
Meal(dis:'it is a chicken sandwichh',name: 'chekin filla')];
List<Date> dates = [Date(dat:'20th of september 2018'),Date(dat:'21th of september 2018'),Date(dat:'22th of september 2018'),
Date(dat:'23th of september 2018')
,Date(dat: '24th of september 2018')];
Map<Object,Object> list2= {dates,_list1};
  @override
  Widget build(BuildContext context) {
    return new Scaffold(
      appBar: new AppBar(
        title: new Text('listviewww'),
      ),
      body:
        ListView( children:_list2
        .map((element){
          return Column(
            children: <Widget>[
          Container(
              child: Text('My name is ayaaaaaaaaaaa '),
          ),
            Container(
            margin: EdgeInsets.all(9.0),
           constraints: new BoxConstraints.expand(height: 300.0),
           decoration: new BoxDecoration(
           border: new Border.all(color: Colors.blueAccent),
           borderRadius: BorderRadius.horizontal( left:Radius.circular(30.0) ,right:Radius.circular(30.0) ),
           image: new DecorationImage(image: new AssetImage('assets/food.jpg'),fit: BoxFit.cover,),),
           padding: EdgeInsets.only(bottom: 10.0),
      child:Center(
        child:Text('HELLfffffffffffO')
      )
      )
            ], 

      );  
        }).toList()

     ) 
     );

Answer 1

您不必映射两个列表来创建 ListView。只需使用 ListView.builder()

ListView.builder(
  itemBuilder: (context, index) {
    var meal = _list1[index];
    var date = dates[index];
    return Text("Here comes your item with $meal and $date");
  },
);