Flutter UI

main.dart

class _MyHomePageState extends State<MyHomePage> {
  int _counter = 0;

  void _incrementCounter() {
    setState(() {
      _counter++;
    });
  }

  @override
  Widget build(BuildContext context) {
  
    return Scaffold(
      appBar: AppBar(
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            _barcodeInfoSection(),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _incrementCounter,
        tooltip: 'Increment',
        child: Icon(Icons.add),
      ), // This trailing comma makes auto-formatting nicer for build methods.
    );
  }

  _getFlexibleRow(String label, String value) {
    return Flexible(
      child: Row(
        children: [
          Expanded(
              child: Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: [Text(label, textAlign: TextAlign.left)])),
          Expanded(
              child: Column(
                  crossAxisAlignment: CrossAxisAlignment.stretch,
                  children: [Text(value, textAlign: TextAlign.right)])),
        ],
      ),
    );
  }
  
  _barcodeInfoSection() {
    return Container(
      child: Column(
        children: [
          Container(
            padding: const EdgeInsets.all(19),
            child: Column(
              mainAxisSize: MainAxisSize.min,
              children: [
                _getFlexibleRow("TCN", "TCN123456789"),
                _getFlexibleRow("QTY", "22"),
                _getFlexibleRow("CST", "\$32.99"),
                _getFlexibleRow("PRT", "P-3828383283"),
              ],
            ),
          ),
        ],
      ),
    );
  }
}