Is there a way to include Multiple Children inside a Container?

Question

This is full code:

class Application extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return new MaterialApp(
      home: new Scaffold(
       body: new Container(
         color: Color(0xff258DED),
         height: 400.0,
         alignment: Alignment.center,
         child: new Container(
           height: 200.0,
           width: 200.0,
           decoration: new BoxDecoration(
             image: DecorationImage(
                 image: new AssetImage('assets/logo.png'),
             fit: BoxFit.fill
             ),
             shape: BoxShape.circle
           ),
         ),
         child: new Container(
          child: new Text('Welcome to Prime Message',
            textAlign: TextAlign.center,
            style: TextStyle(
                fontFamily: 'Aleo',
                fontStyle: FontStyle.normal,
                fontWeight: FontWeight.bold,
                fontSize: 25.0,
                color: Colors.white
            ),
          ),
         ),
        ),
      ),
    );
  }
}

I tried to add a Container on top and then added two children inside it. First child works fine, but second child giving me error like "the argument for the named parameter 'child' was already specified".

Answer 1

If you try to put more than one child in a container, you want to look as Row() or Column() class for linear ones. Stack() is used if you want to have floating children on top of each other.

Eg:

class Application extends StatelessWidget {
    @override
    Widget build(BuildContext context) {
        return new MaterialApp(
            home: new Scaffold(
                body: new Container(
                    color: Color(0xff258DED),
                    height: 400.0,
                    alignment: Alignment.center,
                    child: new Column(
                        children: [
                            new Container(
                                height: 200.0,
                                width: 200.0,
                                decoration: new BoxDecoration(
                                    image: DecorationImage(
                                        image: new AssetImage('assets/logo.png'),
                                        fit: BoxFit.fill
                                    ),
                                    shape: BoxShape.circle
                                ),
                            ),
                            new Container(
                                child: new Text('Welcome to Prime Message',
                                    textAlign: TextAlign.center,
                                    style: TextStyle(
                                        fontFamily: 'Aleo',
                                        fontStyle: FontStyle.normal,
                                        fontWeight: FontWeight.bold,
                                        fontSize: 25.0,
                                        color: Colors.white
                                    ),
                                ),
                            ),
                        ],
                    ),
                ),
            ),
        );
    }
}