Flutter how to handle image with fixed size inside box?

Question

I am new to Flutter and I like it but I am not comfortable building layouts.

I am working on an app that contains a ListView of Cards. Each card is inside a Container and contains an image (with fixed height and width) and a text.

I am not able to place the image correctly inside the Card. I want the image to cover the width of box. Thanks.

This is the code:

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final title = 'MyApp';

    return MaterialApp(
      title: title,
      home: Scaffold(
        appBar: AppBar(
          title: Text(title),
        ),
        body: ListView(
          children: <Widget>[
              Container(
                    margin:EdgeInsets.all(8.0),
                    child: Card(
                        shape: RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(8.0))),
                        child: InkWell(
                           onTap: () => print("ciao"),     
                           child: Column(
                                children: <Widget>[
                                    ClipRRect(
                                      borderRadius: BorderRadius.only(
                                        topLeft: Radius.circular(8.0),
                                        topRight: Radius.circular(8.0),
                                      ),
                                      child: Image.asset(
                                        'img/britannia.jpg',
                                        width: 300,
                                        height: 150,
                                        fit:BoxFit.fill  

                                      ),
                                    ),
                                    ListTile(
                                      title: Text('Pub 1'),
                                      subtitle: Text('Location 1'),
                                    ),
                                ],
                           ),
                        ),
                    ),
              ),
          ],
        ),
      ),
    );
  }
} 

Answer 1

You need to add - crossAxisAlignment: CrossAxisAlignment.stretch, in Column so that children can take up horizontal space.

Working Code:

import 'package:flutter/material.dart';

void main() => runApp(MyApp());

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    final title = 'MyApp';

return MaterialApp(
  title: title,
  home: Scaffold(
    appBar: AppBar(
      title: Text(title),
    ),
    body: ListView(
      children: <Widget>[
        Container(
          margin:EdgeInsets.all(8.0),
          child: Card(
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(8.0))),
            child: InkWell(
              onTap: () => print("ciao"),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.stretch,  // add this
                children: <Widget>[
                  ClipRRect(
                    borderRadius: BorderRadius.only(
                      topLeft: Radius.circular(8.0),
                      topRight: Radius.circular(8.0),
                    ),
                    child: Image.network(
                        'https://placeimg.com/640/480/any',
                       // width: 300,
                        height: 150,
                        fit:BoxFit.fill

                    ),
                  ),
                  ListTile(
                    title: Text('Pub 1'),
                    subtitle: Text('Location 1'),
                  ),
                ],
              ),
            ),
          ),
        ),
        Container(
          margin:EdgeInsets.all(8.0),
          child: Card(
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(8.0))),
            child: InkWell(
              onTap: () => print("ciao"),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.stretch,
                children: <Widget>[
                  ClipRRect(
                    borderRadius: BorderRadius.only(
                      topLeft: Radius.circular(8.0),
                      topRight: Radius.circular(8.0),
                    ),
                    child: Image.network(
                        'https://placeimg.com/640/480/any',
                        // width: 300,
                        height: 150,
                        fit:BoxFit.fill

                    ),
                  ),
                  ListTile(
                    title: Text('Pub 1'),
                    subtitle: Text('Location 1'),
                  ),
                ],
              ),
            ),
          ),
        ),
        Container(
          margin:EdgeInsets.all(8.0),
          child: Card(
            shape: RoundedRectangleBorder(borderRadius: BorderRadius.all(Radius.circular(8.0))),
            child: InkWell(
              onTap: () => print("ciao"),
              child: Column(
                crossAxisAlignment: CrossAxisAlignment.stretch,
                children: <Widget>[
                  ClipRRect(
                    borderRadius: BorderRadius.only(
                      topLeft: Radius.circular(8.0),
                      topRight: Radius.circular(8.0),
                    ),
                    child: Image.network(
                        'https://placeimg.com/640/480/any',
                        // width: 300,
                        height: 150,
                        fit:BoxFit.fill

                    ),
                  ),
                  ListTile(
                    title: Text('Pub 1'),
                    subtitle: Text('Location 1'),
                  ),
                ],
              ),
            ),
          ),
        ),
      ],
    ),
      ),
    );
  }
}

output:

Answer 2

I don't know how.. But this really worked to keep image with fixed size in container Just add Alignment in container

    Container(
      height: double.infinity,
      alignment: Alignment.center, // This is needed
      child: Image.asset(
        Constants.ASSETS_IMAGES + "logo.png",
        fit: BoxFit.contain,
        width: 300,
      ),
    );

Answer 3

This worked for me

Image.network(imageUrl, fit: BoxFit.fitWidth,),