make scaffold scrollable flutter

return new Container(
  child: new SingleChildScrollView(
    child: new Column(
      children: <Widget>[
        _showChild1(),
        _showChild2(),
        ...
        _showChildN()
      ]
    )
  )
);

 @override
 Widget build(BuildContext context) {
  return Scaffold(
    appBar: AppBar(
      title: Text('News'),
    ),
    body: SingleChildScrollView(  // <-- wrap this around
      child: Column(
        children: <Widget>[
        ],
      ),
    ));
  }