How to remove spacing at the start and end of a horizontal list

[Chris]

I have a horizontal list in a StatelessWidget and a a padding defined for the body. The padding is everywhere correct but not for the LIST - when I scroll the list, the result is like in the screenshot. How can this be fixed?

class MyWidget extends StatelessWidget{

  @override
  Widget build(BuildContext context) {
    // TODO: implement build
    return new Scaffold(
      appBar: new AppBar(
          backgroundColor: Colors.blueAccent,
          title: new Text(CoreLocalisation.of(context).title),
          actions: <Widget>[
            new IconButton(icon: new Icon(Icons.send), onPressed: null),
            new IconButton(icon: new Icon(Icons.search), onPressed: null)
          ]
      ),
      body: Padding(
          padding: new EdgeInsets.all(SCREEN_PADDING),
          child:
          new Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            mainAxisAlignment: MainAxisAlignment.start,
            children: <Widget>[
              SizedBox(
                height: 60.0,
                child: new CustomRadio(),
              ),Expanded(
                flex: 5,
                child: Column(
                  children: <Widget>[
                    Expanded(
                      flex: 5,
                      child: new Row
                        (
                        children: <Widget>[
                          new Expanded(
                            flex: 3,
                            child:new Card(
                              child: Center(
                                child: new TestWidget(
                                ),
                              ),
                            ),
                          ),
                          new Expanded(
                            flex: 3,
                            child:new Card(
                              child: new Container(),
                            ),
                          ),
                        ],
                      ),
                    ),

[Chris]

Does anyone have a solution for this problem?

[Hans Muller]

Card widgets have a default margin of 4 pixels on all sides. You can override that with the margin constructor parameter.  That might account for the difference you're seeing.

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[Chris]

Yes.. thanks... that was the problem... adding a margin to the CustomRadio and everything is in a line...