如何在另一个 class 中使用一个 getter?

How to use a getter in another class?

在我的classTabelle我交了一个称号。现在我想在class_TabelleState中输出一个Text(this.title)。但是我收到错误 'the getter title isnt defined for the type _TabelleState'

如何在 _TabelleState class 中使用 this.title?

class Tabelle extends StatefulWidget {
  Tabelle({Key key, this.title}) : super(key: key);
  final String title;

  
  @override
  _TabelleState createState() => _TabelleState();
}

class _TabelleState extends State<Tabelle> {

@override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
          title: Text(this.title),

对于有状态小部件,您可以从其状态访问关联的小部件:

class Tabelle extends StatefulWidget {
  Tabelle({Key key, this.title}) : super(key: key);
  final String title;

  
  @override
  _TabelleState createState() => _TabelleState();
}

class _TabelleState extends State<Tabelle> {

@override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
          title: Text(widget.title),// Here is the magic