Fix Scaffold.of() Called Without Scaffold Exception - RRutors

Scaffold(
    appBar: AppBar(
        title: Text('Builder Widget'),
    ),
    body: Builder(
        builder: (context) => 
            Center(
            child: RaisedButton(
            color: Colors.pink,
            textColor: Colors.white,
            onPressed: () {

 final snackBar = SnackBar(content: Text('Flutter SnackBar'));
  Scaffold.of(context).showSnackBar(snackBar);

},
            child: Text('Display SnackBar'),
            ),
        ),
    ),
);

GlobalKey<ScaffoldState>_scaffoldKey=GlobalKey();

Scaffold(
  key: _scaffoldKey,
  appBar: AppBar(
    title: Text('Builder Widget'),
  ),
  body:  Center(
    child: RaisedButton(
      color: Colors.pink,
      textColor: Colors.white,
      onPressed: () {
        final snackBar = SnackBar(content: Text('Flutter SnackBar'));
       
        _scaffoldKey.currentState.showSnackBar(snackBar);
      },
      child: Text('Display SnackBar'),
    ),
  ),
),

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