将变量传递给flutter中的另一个类

class MyClass {
  final String myVariable;

  MyClass(this.myVariable);
}

void main() {
  String myValue = 'Hello World';
  MyClass myClass = MyClass(myValue);
}

class MyClass {
  void myMethod(String myVariable) {
    // 使用myVariable进行操作
  }
}

void main() {
  String myValue = 'Hello World';
  MyClass myClass = MyClass();
  myClass.myMethod(myValue);
}

import 'package:flutter/material.dart';
import 'package:provider/provider.dart';

class MyVariableProvider extends ChangeNotifier {
  String _myVariable = '';

  String get myVariable => _myVariable;

  set myVariable(String value) {
    _myVariable = value;
    notifyListeners();
  }
}

class MyClass extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    String myValue = Provider.of<MyVariableProvider>(context).myVariable;
    // 使用myValue进行操作
    return Container();
  }
}

void main() {
  runApp(
    ChangeNotifierProvider(
      create: (context) => MyVariableProvider(),
      child: MyApp(),
    ),
  );
}