您可以将ElevatedButtonPackage 到Center小部件中，然后您不必将assign特定的widthPackage 到您的按钮 ...
您可以将ElevatedButtonPackage 到Center小部件中，然后您不必将assign特定的widthPackage 到您的按钮 ...
import 'package:flutter/material.dart'; void main() { runApp(const ElevatedButtonExample()); } class ElevatedButtonExample extends StatelessWidget { const ElevatedButtonExample({Key? key}) : super(key: key); @override Widget build(BuildContext context) { return MaterialApp( home: Scaffold( app...