flutter_native_ocr 0.1.0

flutter_native_ocr: ^0.1.0 copied to clipboard

example/lib/main.dart

import 'package:flutter/material.dart';
import 'dart:async';
import 'dart:io';

import 'package:flutter/services.dart';
import 'package:flutter_native_ocr/flutter_native_ocr.dart';
import 'package:image_picker/image_picker.dart';

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

class MyApp extends StatefulWidget {
  const MyApp({super.key});

  @override
  State<MyApp> createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  String _platformVersion = 'Unknown';
  String _recognizedText = '';
  bool _isLoading = false;
  File? _imageFile;
  final _nativeOcrPlugin = FlutterNativeOcr();
  final ImagePicker _picker = ImagePicker();

  @override
  void initState() {
    super.initState();
    initPlatformState();
  }

  Future<void> initPlatformState() async {
    String platformVersion;
    
    try {
      platformVersion = await _nativeOcrPlugin.getPlatformVersion() ??
          'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    if (!mounted) return;

    setState(() {
      _platformVersion = platformVersion;
    });
  }

  Future<void> _pickImage() async {
    final XFile? image = await _picker.pickImage(source: ImageSource.gallery);

    if (image != null) {
      setState(() {
        _imageFile = File(image.path);
        _recognizedText = '';
      });
    }
  }

  Future<void> _recognizeText() async {
    if (_imageFile == null) return;

    setState(() {
      _isLoading = true;
    });

    try {
      final text = await _nativeOcrPlugin.recognizeText(_imageFile!.path);
      setState(() {
        _recognizedText = text.isEmpty ? 'No text found in image' : text;
      });
    } catch (e) {
      setState(() {
        _recognizedText = 'Error: $e';
      });
    } finally {
      setState(() {
        _isLoading = false;
      });
    }
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Flutter Native OCR Example'),
          backgroundColor: Colors.blue,
        ),
        body: SingleChildScrollView(
          padding: const EdgeInsets.all(16.0),
          child: Column(
            crossAxisAlignment: CrossAxisAlignment.stretch,
            children: [
              Text(
                'Running on: $_platformVersion',
                style: Theme.of(context).textTheme.bodyMedium,
                textAlign: TextAlign.center,
              ),
              const SizedBox(height: 20),
              ElevatedButton.icon(
                onPressed: _pickImage,
                icon: const Icon(Icons.photo_library),
                label: const Text('Pick Image from Gallery'),
                style: ElevatedButton.styleFrom(
                  backgroundColor: Colors.blue,
                  foregroundColor: Colors.white,
                ),
              ),
              const SizedBox(height: 20),
              if (_imageFile != null) ...[
                Container(
                  height: 200,
                  decoration: BoxDecoration(
                    border: Border.all(color: Colors.grey),
                    borderRadius: BorderRadius.circular(8),
                  ),
                  child: Image.file(
                    _imageFile!,
                    fit: BoxFit.contain,
                  ),
                ),
                const SizedBox(height: 20),
                ElevatedButton.icon(
                  onPressed: _isLoading ? null : _recognizeText,
                  icon: _isLoading
                      ? const SizedBox(
                          width: 20,
                          height: 20,
                          child: CircularProgressIndicator(strokeWidth: 2),
                        )
                      : const Icon(Icons.text_fields),
                  label: Text(_isLoading ? 'Recognizing...' : 'Recognize Text'),
                  style: ElevatedButton.styleFrom(
                    backgroundColor: Colors.green,
                    foregroundColor: Colors.white,
                  ),
                ),
              ],
              const SizedBox(height: 20),
              if (_recognizedText.isNotEmpty) ...[
                const Text(
                  'Recognized Text:',
                  style: TextStyle(
                    fontSize: 18,
                    fontWeight: FontWeight.bold,
                  ),
                ),
                const SizedBox(height: 10),
                Container(
                  padding: const EdgeInsets.all(12),
                  decoration: BoxDecoration(
                    color: Colors.grey[100],
                    border: Border.all(color: Colors.grey),
                    borderRadius: BorderRadius.circular(8),
                  ),
                  child: Text(
                    _recognizedText,
                    style: const TextStyle(fontSize: 16),
                  ),
                ),
              ],
            ],
          ),
        ),
      ),
    );
  }
}