Rendering multiple/dynamic widgets based on a list in Flutter?

Question

I am trying to build dynamic widget(cards, blocks, containers with some properties) based on a list of items(entries). Trying to create a function for that(I don't need to create a separate class for that right?).

  List entries = ['stock1', 'stock2', 'stock3'];

  Widget buildListView() {
    return ListView.builder(
        padding: EdgeInsets.all(8),
        itemCount: entries.length,
        itemBuilder: (BuildContext context, int index) {
          return new Container(
            height: 50,
            color: Colors.lightBlue,
            child: Center(child: Text('Entry ${entries[index]}')),
          );
        });
  }

And then I am trying to call that function and add to my body to the list of the widget so it builds all the widget automatically(and I don't have to create them one by one manually).

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Column(
        children: <Widget>[
          Container(
              height: 20.0,
              alignment: Alignment.center,
              padding: EdgeInsets.only(bottom: 8.0),
              color: Colors.lightBlue,
              child: Text('Hello. This is a Container')), //Container
          buildListView(),
        ],
      ),
    );
  }

I've also read somewhere you can utilize .map() method somehow if it's relevant here?

How do I make it work? Please share solutions/ideas or helpful sources/links about this topic.

nashwa · Accepted Answer · 2021-02-25 12:58:15Z

1

Yes, you can do it:

Column(
   children: [
        for(final entry in entries)
          Container(
            height: 50,
            color: Colors.lightBlue,
            child: Center(child: Text(entry)),
          ),
        ],
),

Or if you wish to use map, you need to add toList() in the end:

entries.map((entry) => Container(
            height: 50,
            color: Colors.lightBlue,
            child: Center(child: Text(entry)),
          ),
          ).toList(),

Read article on this

answered Feb 25, 2021 at 12:58

nashwa

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