Flutter: Auto Vertical Height in ListView.builder












1















I'm trying to show some Cards with the ListView.builder

I want to set the heights of each cards automatically to the height of it's children content



class HomePage extends StatelessWidget {
Widget _buildListItems(BuildContext context, DocumentSnapshot document) {
return Center(
child: Card(
child: Column(
children: <Widget>[
ListTile(
title: Text(document['title']),
subtitle: Text(document['subtitle']),
),
Expanded(
child: Container(
padding: EdgeInsets.all(20.0),
child: Text(
document['summary'],
softWrap: true,
),
),
)
],
),
),
);
}


@override
Widget build(BuildContext context) {
return Scaffold(
appBar: AppBar(
title: Text('Title'),
centerTitle: true,
),
body: StreamBuilder(
stream: Firestore.instance.collection('randomDB').snapshots(),
builder: (context, snapshot) {
if (!snapshot.hasData) return const Text('Loading...');
return ListView.builder(
itemExtent: 225.0,
itemCount: snapshot.data.documents.length,
itemBuilder: (context, index) =>
_buildListItems(context, snapshot.data.documents[index]),
);
},
),
}


When document['summary'] is too long, it makes the text overflow through card widget. For this time all I do is increase itemExtent in ListView.Builder



Is there a way to set heights of ListView dynamically?










share|improve this question



























    1















    I'm trying to show some Cards with the ListView.builder

    I want to set the heights of each cards automatically to the height of it's children content



    class HomePage extends StatelessWidget {
    Widget _buildListItems(BuildContext context, DocumentSnapshot document) {
    return Center(
    child: Card(
    child: Column(
    children: <Widget>[
    ListTile(
    title: Text(document['title']),
    subtitle: Text(document['subtitle']),
    ),
    Expanded(
    child: Container(
    padding: EdgeInsets.all(20.0),
    child: Text(
    document['summary'],
    softWrap: true,
    ),
    ),
    )
    ],
    ),
    ),
    );
    }


    @override
    Widget build(BuildContext context) {
    return Scaffold(
    appBar: AppBar(
    title: Text('Title'),
    centerTitle: true,
    ),
    body: StreamBuilder(
    stream: Firestore.instance.collection('randomDB').snapshots(),
    builder: (context, snapshot) {
    if (!snapshot.hasData) return const Text('Loading...');
    return ListView.builder(
    itemExtent: 225.0,
    itemCount: snapshot.data.documents.length,
    itemBuilder: (context, index) =>
    _buildListItems(context, snapshot.data.documents[index]),
    );
    },
    ),
    }


    When document['summary'] is too long, it makes the text overflow through card widget. For this time all I do is increase itemExtent in ListView.Builder



    Is there a way to set heights of ListView dynamically?










    share|improve this question

























      1












      1








      1








      I'm trying to show some Cards with the ListView.builder

      I want to set the heights of each cards automatically to the height of it's children content



      class HomePage extends StatelessWidget {
      Widget _buildListItems(BuildContext context, DocumentSnapshot document) {
      return Center(
      child: Card(
      child: Column(
      children: <Widget>[
      ListTile(
      title: Text(document['title']),
      subtitle: Text(document['subtitle']),
      ),
      Expanded(
      child: Container(
      padding: EdgeInsets.all(20.0),
      child: Text(
      document['summary'],
      softWrap: true,
      ),
      ),
      )
      ],
      ),
      ),
      );
      }


      @override
      Widget build(BuildContext context) {
      return Scaffold(
      appBar: AppBar(
      title: Text('Title'),
      centerTitle: true,
      ),
      body: StreamBuilder(
      stream: Firestore.instance.collection('randomDB').snapshots(),
      builder: (context, snapshot) {
      if (!snapshot.hasData) return const Text('Loading...');
      return ListView.builder(
      itemExtent: 225.0,
      itemCount: snapshot.data.documents.length,
      itemBuilder: (context, index) =>
      _buildListItems(context, snapshot.data.documents[index]),
      );
      },
      ),
      }


      When document['summary'] is too long, it makes the text overflow through card widget. For this time all I do is increase itemExtent in ListView.Builder



      Is there a way to set heights of ListView dynamically?










      share|improve this question














      I'm trying to show some Cards with the ListView.builder

      I want to set the heights of each cards automatically to the height of it's children content



      class HomePage extends StatelessWidget {
      Widget _buildListItems(BuildContext context, DocumentSnapshot document) {
      return Center(
      child: Card(
      child: Column(
      children: <Widget>[
      ListTile(
      title: Text(document['title']),
      subtitle: Text(document['subtitle']),
      ),
      Expanded(
      child: Container(
      padding: EdgeInsets.all(20.0),
      child: Text(
      document['summary'],
      softWrap: true,
      ),
      ),
      )
      ],
      ),
      ),
      );
      }


      @override
      Widget build(BuildContext context) {
      return Scaffold(
      appBar: AppBar(
      title: Text('Title'),
      centerTitle: true,
      ),
      body: StreamBuilder(
      stream: Firestore.instance.collection('randomDB').snapshots(),
      builder: (context, snapshot) {
      if (!snapshot.hasData) return const Text('Loading...');
      return ListView.builder(
      itemExtent: 225.0,
      itemCount: snapshot.data.documents.length,
      itemBuilder: (context, index) =>
      _buildListItems(context, snapshot.data.documents[index]),
      );
      },
      ),
      }


      When document['summary'] is too long, it makes the text overflow through card widget. For this time all I do is increase itemExtent in ListView.Builder



      Is there a way to set heights of ListView dynamically?







      flutter flutter-layout






      share|improve this question













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      asked Jan 3 at 6:45









      CharukaHSCharukaHS

      408




      408
























          1 Answer
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          0














          I believe column have something called mainAxisSize property



          Column(
          mainAxisSize: MainAxisSize.min,
          )


          MainAxisSize.min will make the Column size to stretch to the minimum size of the children.
          Opposite to it is MainAxisSize.max that will stretch to the maximum size that it can achieve.



          But I haven't tested it yet tho. Hope it will help






          share|improve this answer























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            1 Answer
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            active

            oldest

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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes









            0














            I believe column have something called mainAxisSize property



            Column(
            mainAxisSize: MainAxisSize.min,
            )


            MainAxisSize.min will make the Column size to stretch to the minimum size of the children.
            Opposite to it is MainAxisSize.max that will stretch to the maximum size that it can achieve.



            But I haven't tested it yet tho. Hope it will help






            share|improve this answer




























              0














              I believe column have something called mainAxisSize property



              Column(
              mainAxisSize: MainAxisSize.min,
              )


              MainAxisSize.min will make the Column size to stretch to the minimum size of the children.
              Opposite to it is MainAxisSize.max that will stretch to the maximum size that it can achieve.



              But I haven't tested it yet tho. Hope it will help






              share|improve this answer


























                0












                0








                0







                I believe column have something called mainAxisSize property



                Column(
                mainAxisSize: MainAxisSize.min,
                )


                MainAxisSize.min will make the Column size to stretch to the minimum size of the children.
                Opposite to it is MainAxisSize.max that will stretch to the maximum size that it can achieve.



                But I haven't tested it yet tho. Hope it will help






                share|improve this answer













                I believe column have something called mainAxisSize property



                Column(
                mainAxisSize: MainAxisSize.min,
                )


                MainAxisSize.min will make the Column size to stretch to the minimum size of the children.
                Opposite to it is MainAxisSize.max that will stretch to the maximum size that it can achieve.



                But I haven't tested it yet tho. Hope it will help







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Jan 3 at 7:21









                Muhammad Islam TaufikurahmanMuhammad Islam Taufikurahman

                164




                164
































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