DART

provider flutter

  flutter pub add provider

flutter provider

dependencies:
  provider: ^5.0.0

provider flutter docs

provider: ^6.0.1

Provider<DataType>(
  builder:(context)=> data(datatype defining data = "New data found")
child:MaterialApp();

To access the data String value 
:
Provider.of<Data(classname)>(context).data

provider flutter

flutter pub add provider

provider flutter

import 'package:provider/provider.dart';