name: ai_image_generator description: An AI image generator app using Flutter publish_to: 'none' version: 1.0.0+1 environment: sdk: '>=3.0.0 <4.0.0' dependencies: flutter: sdk: flutter http: ^0.13.5 provider: ^6.0.5 cached_network_image: ^3.2.3 shared_preferences: ^2.2.0 flutter_dotenv: ^5.1.0 uuid: ^3.0.7 dev_dependencies: flutter_test: sdk: flutter flutter_lints: ^2.0.0 flutter: uses-material-design: true assets: - .env import 'package:flutter/material.dart'; import 'package:ai_image_generator/providers/image_provider.dart'; import 'package:ai_image_generator/screens/home_screen.dart'; import 'package:provider/provider.dart'; void main() async { WidgetsFlutterBinding.ensureInitialized(); runApp( MultiProvider( providers: [ ChangeNotifierProvider(create: (_) => ImageGeneratorProvider()), ], child: const MyApp(), ), ); } class MyApp extends StatelessWidget { const MyApp({super.key}); @override Widget build(BuildContext context) { return MaterialApp( title: 'AI Image Generator', theme: ThemeData( colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple), useMaterial3: true, ), home: const HomeScreen(), debugShowCheckedModeBanner: false, ); } } import 'dart:convert'; import 'package:flutter/foundation.dart'; import 'package:http/http.dart' as http; import 'package:flutter_dotenv/flutter_dotenv.dart'; import 'package:shared_preferences/shared_preferences.dart'; class GeneratedImage { final String id; final String prompt; final String url; final DateTime createdAt; GeneratedImage({ required this.id, required this.prompt, required this.url, required this.createdAt, }); Map toMap() { return { 'id': id, 'prompt': prompt, 'url': url, 'createdAt': createdAt.toIso8601String(), }; } factory GeneratedImage.fromMap(Map map) { return GeneratedImage( id: map['id'], prompt: map['prompt'], url: map['url'], createdAt: DateTime.parse(map['createdAt']), ); } } class ImageGeneratorProvider with ChangeNotifier { List _generatedImages = []; bool _isLoading = false; String? _error; List get generatedImages => _generatedImages; bool get isLoading => _isLoading; String? get error => _error; ImageGeneratorProvider() { _loadSavedImages(); } Future _loadSavedImages() async { final prefs = await SharedPreferences.getInstance(); final imagesJson = prefs.getStringList('generated_images') ?? []; _generatedImages = imagesJson .map((json) => GeneratedImage.fromMap(jsonDecode(json))) .toList(); notifyListeners(); } Future _saveImages() async { final prefs = await SharedPreferences.getInstance(); final imagesJson = _generatedImages.map((image) => jsonEncode(image.toMap())).toList(); await prefs.setStringList('generated_images', imagesJson); } Future generateImage(String prompt) async { _isLoading = true; _error = null; notifyListeners(); try { final apiKey = dotenv.env['STABILITY_API_KEY']; if (apiKey == null) throw Exception('API key not found'); final response = await http.post( Uri.parse('https://api.stability.ai/v1/generation/stable-diffusion-xl-1024-v1-0/text-to-image'), headers: { 'Content-Type': 'application/json', 'Authorization': 'Bearer $apiKey', 'Accept': 'application/json', }, body: jsonEncode({ 'text_prompts': [ {'text': prompt, 'weight': 1} ], 'cfg_scale': 7, 'height': 1024, 'width': 1024, 'samples': 1, 'steps': 30, }), ); if (response.statusCode == 200) { final responseData = jsonDecode(response.body); final imageUrl = responseData['artifacts'][0]['base64']; final newImage = GeneratedImage( id: DateTime.now().millisecondsSinceEpoch.toString(), prompt: prompt, url: 'data:image/png;base64,$imageUrl', createdAt: DateTime.now(), ); _generatedImages.insert(0, newImage); await _saveImages(); } else { throw Exception('Failed to generate image: ${response.body}'); } } catch (e) { _error = e.toString(); } finally { _isLoading = false; notifyListeners(); } } } import 'package:flutter/material.dart'; import 'package:ai_image_generator/providers/image_provider.dart'; import 'package:provider/provider.dart'; import 'package:cached_network_image/cached_network_image.dart'; class HomeScreen extends StatefulWidget { const HomeScreen({super.key}); @override State createState() => _HomeScreenState(); } class _HomeScreenState extends State { final TextEditingController _promptController = TextEditingController(); @override void dispose() { _promptController.dispose(); super.dispose(); } @override Widget build(BuildContext context) { final imageProvider = Provider.of(context); return Scaffold( appBar: AppBar( title: const Text('AI Image Generator'), ), body: Column( children: [ Padding( padding: const EdgeInsets.all(16.0), child: TextField( controller: _promptController, decoration: InputDecoration( labelText: 'Enter your prompt', border: const OutlineInputBorder(), suffixIcon: IconButton( icon: const Icon(Icons.send), onPressed: () { if (_promptController.text.isNotEmpty) { imageProvider.generateImage(_promptController.text); _promptController.clear(); } }, ), ), ), ), if (imageProvider.isLoading) const Center(child: CircularProgressIndicator()) else if (imageProvider.error != null) Padding( padding: const EdgeInsets.all(16.0), child: Text( imageProvider.error!, style: const TextStyle(color: Colors.red), ), ) else Expanded( child: GridView.builder( padding: const EdgeInsets.all(8.0), gridDelegate: const SliverGridDelegateWithFixedCrossAxisCount( crossAxisCount: 2, crossAxisSpacing: 8.0, mainAxisSpacing: 8.0, childAspectRatio: 0.8, ), itemCount: imageProvider.generatedImages.length, itemBuilder: (context, index) { final image = imageProvider.generatedImages[index]; return GestureDetector( onTap: () { showDialog( context: context, builder: (context) => AlertDialog( content: Column( mainAxisSize: MainAxisSize.min, children: [ Image.memory( base64Decode(image.url.split(',').last), fit: BoxFit.cover, ), const SizedBox(height: 16), Text(image.prompt), ], ), actions: [ TextButton( onPressed: () => Navigator.pop(context), child: const Text('Close'), ), ], ), ); }, child: Card( child: Column( children: [ Expanded( child: Image.memory( base64Decode(image.url.split(',').last), fit: BoxFit.cover, width: double.infinity, ), ), Padding( padding: const EdgeInsets.all(8.0), child: Text( image.prompt, maxLines: 2, overflow: TextOverflow.ellipsis, ), ), ], ), ), ); }, ), ), ], ), ); } } STABILITY_API_KEY=your_api_key_here