Dart Development Tutorials, Guides & Insights

لإضافة زر يقوم بتغيير النص عند الضغط عليه:

import 'package:flutter/material.dart';

void main() {
  runApp(MyApp());
}

class MyApp extends StatefulWidget {
  @override
  _MyAppState createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String message = 'اضغط على الزر لتغيير النص';

  void changeMessage() {
    setState(() {
      message = 'تم تغيير النص!';
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('تطبيق Flutter تفاعلي'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              Text(
                message,
                style: TextStyle(fontSize: 20),
              ),
              SizedBox(height: 20),
              ElevatedButton(
                onPressed: changeMessage,
                child: Text('اضغط هنا'),
              ),
            ],
          ),
        ),
      ),
    );
  }
}

Run flutter pub get to install the packages.

Let's start by building the UI components.

• lib/main.dart: The main entry point for your Flutter application.
• pubspec.yaml: The configuration file where you specify dependencies.
• android/ and ios/: Platform-specific code.

Let’s create a simple counter app to understand Flutter’s basic concepts.