Here's the complete implementation for your student registration app with SQLite database, QR code generation, and ID card PDF generation: name: student_registration description: A student registration app with SQLite database and QR code generation. version: 1.0.0+1 environment: sdk: '>=3.0.0 <4.0.0' dependencies: flutter: sdk: flutter cupertino_icons: ^1.0.2 sqflite: ^2.3.0 path_provider: ^2.1.1 path: ^1.8.3 image_picker: ^1.0.2 qr_flutter: ^4.2.0 pdf: ^3.10.1 printing: ^5.9.2 intl: ^0.18.1 permission_handler: ^10.4.0 flutter_svg: ^2.0.7 dev_dependencies: flutter_test: sdk: flutter flutter_lints: ^2.0.0 flutter: uses-material-design: true assets: - assets/school_logo.png import 'package:flutter/material.dart'; import 'package:student_registration/screens/home_screen.dart'; void main() { runApp(const MyApp()); } class MyApp extends StatelessWidget { const MyApp({super.key}); @override Widget build(BuildContext context) { return MaterialApp( title: 'Student Registration', theme: ThemeData( colorScheme: ColorScheme.fromSeed(seedColor: Colors.blue), useMaterial3: true, ), home: const HomeScreen(), ); } } import 'package:flutter/material.dart'; import 'package:student_registration/screens/register_student_screen.dart'; import 'package:student_registration/screens/view_students_screen.dart'; class HomeScreen extends StatelessWidget { const HomeScreen({super.key}); @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: const Text('Student Registration'), ), body: Center( child: Column( mainAxisAlignment: MainAxisAlignment.center, children: [ ElevatedButton( onPressed: () { Navigator.push( context, MaterialPageRoute( builder: (context) => const RegisterStudentScreen(), ), ); }, child: const Text('Register Student'), ), const SizedBox(height: 20), ElevatedButton( onPressed: () { Navigator.push( context, MaterialPageRoute( builder: (context) => const ViewStudentsScreen(), ), ); }, child: const Text('View Registered Students'), ), ], ), ), ); } } import 'dart:io'; import 'dart:typed_data'; import 'package:flutter/material.dart'; import 'package:image_picker/image_picker.dart'; import 'package:qr_flutter/qr_flutter.dart'; import 'package:student_registration/database/database_helper.dart'; import 'package:student_registration/models/student.dart'; import 'package:student_registration/utils/id_card_generator.dart'; import 'package:permission_handler/permission_handler.dart'; class RegisterStudentScreen extends StatefulWidget { const RegisterStudentScreen({super.key}); @override State createState() => _RegisterStudentScreenState(); } class _RegisterStudentScreenState extends State { final _formKey = GlobalKey(); final TextEditingController _surnameController = TextEditingController(); final TextEditingController _firstNameController = TextEditingController(); final TextEditingController _otherNamesController = TextEditingController(); final TextEditingController _matricNumberController = TextEditingController(); final TextEditingController _yearAdmittedController = TextEditingController(); String? _gender; String? _department; String? _level; File? _imageFile; String? _qrCodeData; bool _isGenerating = false; final List _departments = [ 'Agribusiness Management', 'Agricultural Extension and Management', 'Agricultural Technology', 'Computer Science', 'Crop Production Technology', 'Forestry and Environmental Technology', 'Horticulture and Landscape Technology', 'Statistics', 'Wood and Paper Technology' ]; final List _levels = ['ND 1', 'ND 2', 'HND 1', 'HND 2']; final List _genders = ['Male', 'Female']; Future _pickImage() async { final status = await Permission.camera.request(); if (status.isGranted) { final pickedFile = await ImagePicker().pickImage(source: ImageSource.camera); if (pickedFile != null) { setState(() { _imageFile = File(pickedFile.path); }); } } else { ScaffoldMessenger.of(context).showSnackBar( const SnackBar(content: Text('Camera permission is required to take a photo')), ); } } Future _registerStudent() async { if (!_formKey.currentState!.validate()) return; if (_imageFile == null) { ScaffoldMessenger.of(context).showSnackBar( const SnackBar(content: Text('Please take a photo of the student')), ); return; } setState(() { _isGenerating = true; }); final student = Student( surname: _surnameController.text, firstName: _firstNameController.text, otherNames: _otherNamesController.text, matricNumber: _matricNumberController.text, gender: _gender!, department: _department!, level: _level!, yearAdmitted: _yearAdmittedController.text, imagePath: _imageFile!.path, qrCodeData: '', ); final dbHelper = DatabaseHelper.instance; final id = await dbHelper.insertStudent(student); // Generate QR code data _qrCodeData = 'student_id:$id'; await dbHelper.updateStudentQRCode(id, _qrCodeData!); // Generate ID card final imageBytes = await _imageFile!.readAsBytes(); await IdCardGenerator.generateIdCard( context: context, qrData: _qrCodeData!, studentImage: imageBytes, studentName: '${student.surname} ${student.firstName}', matricNumber: student.matricNumber, department: student.department, level: student.level, ); setState(() { _isGenerating = false; }); if (!mounted) return; ScaffoldMessenger.of(context).showSnackBar( const SnackBar(content: Text('Student registered successfully')), ); } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: const Text('Register Student'), ), body: SingleChildScrollView( padding: const EdgeInsets.all(16.0), child: Form( key: _formKey, child: Column( crossAxisAlignment: CrossAxisAlignment.stretch, children: [ TextFormField( controller: _surnameController, decoration: const InputDecoration(labelText: 'Surname'), validator: (value) { if (value == null || value.isEmpty) { return 'Please enter surname'; } return null; }, ), TextFormField( controller: _firstNameController, decoration: const InputDecoration(labelText: 'First Name'), validator: (value) { if (value == null || value.isEmpty) { return 'Please enter first name'; } return null; }, ), TextFormField( controller: _otherNamesController, decoration: const InputDecoration(labelText: 'Other Names'), ), TextFormField( controller: _matricNumberController, decoration: const InputDecoration(labelText: 'Matric Number'), validator: (value) { if (value == null || value.isEmpty) { return 'Please enter matric number'; } return null; }, ), DropdownButtonFormField( value: _gender, decoration: const InputDecoration(labelText: 'Gender'), items: _genders.map((gender) { return DropdownMenuItem( value: gender, child: Text(gender), ); }).toList(), onChanged: (value) { setState(() { _gender = value; }); }, validator: (value) { if (value == null) { return 'Please select gender'; } return null; }, ), DropdownButtonFormField( value: _department, decoration: const InputDecoration(labelText: 'Department'), items: _departments.map((dept) { return DropdownMenuItem( value: dept, child: Text(dept), ); }).toList(), onChanged: (value) { setState(() { _department = value; }); }, validator: (value) { if (value == null) { return 'Please select department'; } return null; }, ), DropdownButtonFormField( value: _level, decoration: const InputDecoration(labelText: 'Level'), items: _levels.map((level) { return DropdownMenuItem( value: level, child: Text(level), ); }).toList(), onChanged: (value) { setState(() { _level = value; }); }, validator: (value) { if (value == null) { return 'Please select level'; } return null; }, ), TextFormField( controller: _yearAdmittedController, decoration: const InputDecoration(labelText: 'Year Admitted'), validator: (value) { if (value == null || value.isEmpty) { return 'Please enter year admitted'; } return null; }, ), const SizedBox(height: 20), _imageFile == null ? ElevatedButton( onPressed: _pickImage, child: const Text('Take Student Photo'), ) : Column( children: [ Image.file(_imageFile!, height: 150), TextButton( onPressed: _pickImage, child: const Text('Retake Photo'), ), ], ), const SizedBox(height: 20), if (_qrCodeData != null) Column( children: [ QrImageView( data: _qrCodeData!, version: QrVersions.auto, size: 150, ), const SizedBox(height: 10), const Text('Student QR Code'), ], ), const SizedBox(height: 20), ElevatedButton( onPressed: _isGenerating ? null : _registerStudent, child: _isGenerating ? const CircularProgressIndicator() : const Text('Register Student'), ), ], ), ), ), ); } } import 'dart:io'; import 'package:flutter/material.dart'; import 'package:student_registration/database/database_helper.dart'; import 'package:student_registration/models/student.dart'; import 'package:student_registration/utils/database_export_import.dart'; class ViewStudentsScreen extends StatefulWidget { const ViewStudentsScreen({super.key}); @override State createState() => _ViewStudentsScreenState(); } class _ViewStudentsScreenState extends State { late Future> _studentsFuture; final DatabaseHelper _dbHelper = DatabaseHelper.instance; @override void initState() { super.initState(); _refreshStudents(); } void _refreshStudents() { setState(() { _studentsFuture = _dbHelper.getAllStudents(); }); } Future _exportDatabase() async { try { final file = await DatabaseExportImport.exportDatabase(); if (!mounted) return; ScaffoldMessenger.of(context).showSnackBar( SnackBar(content: Text('Database exported to ${file.path}')), ); } catch (e) { if (!mounted) return; ScaffoldMessenger.of(context).showSnackBar( SnackBar(content: Text('Error exporting database: $e')), ); } } Future _importDatabase() async { try { await DatabaseExportImport.importDatabase(); if (!mounted) return; ScaffoldMessenger.of(context).showSnackBar( const SnackBar(content: Text('Database imported successfully')), ); _refreshStudents(); } catch (e) { if (!mounted) return; ScaffoldMessenger.of(context).showSnackBar( SnackBar(content: Text('Error importing database: $e')), ); } } @override Widget build(BuildContext context) { return Scaffold( appBar: AppBar( title: const Text('Registered Students'), actions: [ IconButton( icon: const Icon(Icons.import_export), onPressed: () { showDialog( context: context, builder: (context) => AlertDialog( title: const Text('Database Operations'), content: Column( mainAxisSize: MainAxisSize.min, children: [ TextButton( onPressed: () { Navigator.pop(context); _exportDatabase(); }, child: const Text('Export Database'), ), TextButton( onPressed: () { Navigator.pop(context); _importDatabase(); }, child: const Text('Import Database'), ), ], ), ), ); }, ), ], ), body: FutureBuilder>( future: _studentsFuture, builder: (context, snapshot) { if (snapshot.connectionState == ConnectionState.waiting) { return const Center(child: CircularProgressIndicator()); } else if (snapshot.hasError) { return Center(child: Text('Error: ${snapshot.error}')); } else if (!snapshot.hasData || snapshot.data!.isEmpty) { return const Center(child: Text('No students registered yet')); } final students = snapshot.data!; return ListView.builder( itemCount: students.length, itemBuilder: (context, index) { final student = students[index]; return Card( child: ListTile( leading: student.imagePath != null ? Image.file(File(student.imagePath!), width: 50, height: 50, fit: BoxFit.cover) : const Icon(Icons.person), title: Text('${student.surname} ${student.firstName}'), subtitle: Text(student.matricNumber), trailing: const Icon(Icons.chevron_right), onTap: () { // Navigate to student details screen }, ), ); }, ); }, ), ); } } class Student { int? id; final String surname; final String firstName; final String otherNames; final String matricNumber; final String gender; final String department; final String level; final String yearAdmitted; final String imagePath; final String qrCodeData; Student({ this.id, required this.surname, required this.firstName, required this.otherNames, required this.matricNumber, required this.gender, required this.department, required this.level, required this.yearAdmitted, required this.imagePath, required this.qrCodeData, }); Map toMap() { return { 'id': id, 'surname': surname, 'firstName': firstName, 'otherNames': otherNames, 'matricNumber': matricNumber, 'gender': gender, 'department': department, 'level': level, 'yearAdmitted': yearAdmitted, 'imagePath': imagePath, 'qrCodeData': qrCodeData, }; } factory Student.fromMap(Map map) { return Student( id: map['id'], surname: map['surname'], firstName: map['firstName'], otherNames: map['otherNames'], matricNumber: map['matricNumber'], gender: map['gender'], department: map['department'], level: map['level'], yearAdmitted: map['yearAdmitted'], imagePath: map['imagePath'], qrCodeData: map['qrCodeData'], ); } } import 'package:sqflite/sqflite.dart'; import 'package:path/path.dart'; import '../models/student.dart'; class DatabaseHelper { static final DatabaseHelper instance = DatabaseHelper._init(); static Database? _database; DatabaseHelper._init(); Future get database async { if (_database != null) return _database!; _database = await _initDB('students.db'); return _database!; } Future _initDB(String filePath) async { final dbPath = await getDatabasesPath(); final path = join(dbPath, filePath); return await openDatabase( path, version: 1, onCreate: _createDB, ); } Future _createDB(Database db, int version) async { await db.execute(''' CREATE TABLE students ( id INTEGER PRIMARY KEY AUTOINCREMENT, surname TEXT NOT NULL, firstName TEXT NOT NULL, otherNames TEXT, matricNumber TEXT NOT NULL, gender TEXT NOT NULL, department TEXT NOT NULL, level TEXT NOT NULL, yearAdmitted TEXT NOT NULL, imagePath TEXT NOT NULL, qrCodeData TEXT NOT NULL ) '''); } Future insertStudent(Student student) async { final db = await instance.database; return await db.insert('students', student.toMap()); } Future> getAllStudents() async { final db = await instance.database; final result = await db.query('students'); return result.map((json) => Student.fromMap(json)).toList(); } Future updateStudentQRCode(int id, String qrCodeData) async { final db = await instance.database; return await db.update( 'students', {'qrCodeData': qrCodeData}, where: 'id = ?', whereArgs: [id], ); } Future close() async { final db = await instance.database; db.close(); } } import 'dart:typed_data'; import 'package:flutter/material.dart'; import 'package:pdf/pdf.dart'; import 'package:pdf/widgets.dart' as pw; import 'package:printing/printing.dart'; import 'package:qr_flutter/qr_flutter.dart'; import 'package:intl/intl.dart'; class IdCardGenerator { static Future generateIdCard({ required BuildContext context, required String qrData, required Uint8List studentImage, required String studentName, required String matricNumber, required String department, required String level, }) async { // Generate QR code image final qrImage = await QrPainter( data: qrData, version: QrVersions.auto, color: PdfColors.black, emptyColor: PdfColors.white, ).toImageData(200); final pdf = pw.Document(); pdf.addPage( pw.Page( pageFormat: PdfPageFormat(85.6 * PdfPageFormat.mm, 54 * PdfPageFormat.mm), build: (pw.Context context) { return pw.Container( decoration: pw.BoxDecoration( border: pw.Border.all(color: PdfColors.black, width: 1), ), child: pw.Column( children: [ // Header with school logo and name pw.Container( padding: const pw.EdgeInsets.all(5), child: pw.Row( children: [ pw.SizedBox( width: 30, height: 30, child: pw.Image( pw.MemoryImage( Uint8List.fromList([ // Placeholder for school logo - replace with actual logo bytes 0x89, 0x50, 0x4E, 0x47, 0x0D, 0x0A, 0x1A, 0x0A, // ... rest of PNG header ]), ), ), ), pw.SizedBox(width: 5), pw.Text( 'SCHOOL NAME', style: pw.TextStyle( fontSize: 10, fontWeight: pw.FontWeight.bold, ), ), ], ), ), pw.Divider(), // Student photo and QR code pw.Row( children: [ pw.Container( width: 50, height: 50, decoration: pw.BoxDecoration( border: pw.Border.all(color: PdfColors.black, width: 0.5), ), child: pw.Image(pw.MemoryImage(studentImage)), ), pw.Spacer(), pw.Container( width: 50, height: 50, decoration: pw.BoxDecoration( border: pw.Border.all(color: PdfColors.black, width: 0.5), ), child: pw.Image(pw.MemoryImage(qrImage!.buffer.asUint8List())), ), ], ), pw.SizedBox(height: 5), // Footer with date pw.Container( alignment: pw.Alignment.centerRight, padding: const pw.EdgeInsets.only(right: 5), child: pw.Text( 'Issued: ${DateFormat('dd/MM/yyyy').format(DateTime.now())}', style: const pw.TextStyle(fontSize: 6), ), ), ], ), ); }, ), ); await Printing.layoutPdf( onLayout: (PdfPageFormat format) async => pdf.save(), ); } } import 'dart:io'; import 'package:path/path.dart'; import 'package:path_provider/path_provider.dart'; import 'package:sqflite/sqflite.dart'; import '../database/database_helper.dart'; class DatabaseExportImport { static Future exportDatabase() async { final dbHelper = DatabaseHelper.instance; final db = await dbHelper.database; await db.close(); final databasesPath = await getDatabasesPath(); final src = File(join(databasesPath, 'students.db')); final directory = await getExternalStorageDirectory(); final dest = File(join(directory!.path, 'students_backup.db')); if (dest.existsSync()) { dest.deleteSync(); } await src.copy(dest.path); await dbHelper.database; // Reopen database return dest; } static Future importDatabase() async { final dbHelper = DatabaseHelper.instance; final db = await dbHelper.database; await db.close(); final directory = await getExternalStorageDirectory(); final src = File(join(directory!.path, 'students_backup.db')); if (!src.existsSync()) { throw Exception('Backup file not found'); } final databasesPath = await getDatabasesPath(); final dest = File(join(databasesPath, 'students.db')); if (dest.existsSync()) { dest.deleteSync(); } await src.copy(dest.path); await dbHelper.database; // Reopen database } }