A package to make it easier for users to extract nik data from identity card of the Indonesian people

Features

To generate data NIK and Name from image of identity card of the Indonesian people

Getting started

import 'package:ocr_nik_extractor/ocr_nik_extractor.dart';

Usage

Define the function

final OcrNikExtractor ocrNikExtractor = OcrNikExtractor();

Call the function to get the data

final String nik = await ocrNikExtractor.extractNik(imageFile: imageFile);

Example Code

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:image_picker/image_picker.dart';
import 'package:ocr_nik_extractor/ocr_nik_extractor.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'OCR NIK KTP'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  File? _imageFile;
  String _extractedNik = "Belum ada NIK yang diekstrak";
  String _extractedName = "Belum ada nama yang diekstrak";
  final OcrNikExtractor _ocrNikExtractor = OcrNikExtractor();
  final ImagePicker _picker = ImagePicker();

  Future<void> _pickAndExtractNik() async {
    final XFile? imageFile = await _picker.pickImage(source: ImageSource.camera);

    if (imageFile != null) {
      setState(() {
        _imageFile = File(imageFile.path);
      });

      try {
        final extractedData = await _ocrNikExtractor.extractData(imageFile: File(imageFile.path));
        setState(() {
          _extractedNik = extractedData['nik']!;
          _extractedName = extractedData['nama']!;
        });
      } catch (e) {
        setState(() {
          _extractedNik = "Gagal mengekstrak NIK: $e";
          _extractedName = "Gagal mengekstrak NAMA: $e";
        });
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            if (_imageFile != null)
              Container(
                margin: const EdgeInsets.only(bottom: 20),
                child: ClipRRect(
                  borderRadius: BorderRadius.circular(15),
                  child: Image.file(
                    _imageFile!,
                    height: 300,
                    width: 300,
                    fit: BoxFit.cover,
                  ),
                ),
              ),
            const Text(
              '*Note: Pastikan NIK KTP terlihat jelas!',
              style: TextStyle(
                  color: Colors.red
              ),
            ),
            const Text(
              'NIK yang diekstrak:',
            ),
            Text(
              _extractedNik,
              style: Theme.of(context).textTheme.headlineMedium,
            ),
            const Text(
              'Nama yang diekstrak:',
            ),
            Text(
              _extractedName,
              style: Theme.of(context).textTheme.headlineMedium,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _pickAndExtractNik,
        tooltip: 'Ambil Gambar dan Ekstrak NIK',
        child: const Icon(Icons.camera_alt),
      ),
    );
  }
}

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Flutter Demo',
      debugShowCheckedModeBanner: false,
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
        useMaterial3: true,
      ),
      home: const MyHomePage(title: 'OCR NIK KTP'),
    );
  }
}

class MyHomePage extends StatefulWidget {
  const MyHomePage({super.key, required this.title});

  final String title;

  @override
  State<MyHomePage> createState() => _MyHomePageState();
}

class _MyHomePageState extends State<MyHomePage> {
  File? _imageFile;
  String _extractedNik = "Belum ada NIK yang diekstrak";
  final OcrNikExtractor _ocrNikExtractor = OcrNikExtractor();
  final ImagePicker _picker = ImagePicker();

  Future<void> _pickAndExtractNik() async {
    final XFile? imageFile = await _picker.pickImage(source: ImageSource.camera);

    if (imageFile != null) {
      setState(() {
        _imageFile = File(imageFile.path);
      });

      try {
        final nik = await _ocrNikExtractor.extractNik(imageFile: File(imageFile.path));
        setState(() {
          _extractedNik = nik;
        });
      } catch (e) {
        setState(() {
          _extractedNik = "Gagal mengekstrak NIK: $e";
        });
      }
    }
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        backgroundColor: Theme.of(context).colorScheme.inversePrimary,
        title: Text(widget.title),
      ),
      body: Center(
        child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
            if (_imageFile != null)
              Container(
                margin: const EdgeInsets.only(bottom: 20),
                child: ClipRRect(
                  borderRadius: BorderRadius.circular(15),
                  child: Image.file(
                    _imageFile!,
                    height: 300,
                    width: 300,
                    fit: BoxFit.cover,
                  ),
                ),
              ),
            const Text(
              '*Note: Pastikan NIK KTP terlihat jelas!',
              style: TextStyle(
                  color: Colors.red
              ),
            ),
            const Text(
              'NIK yang diekstrak:',
            ),
            Text(
              _extractedNik,
              style: Theme.of(context).textTheme.headlineMedium,
            ),
          ],
        ),
      ),
      floatingActionButton: FloatingActionButton(
        onPressed: _pickAndExtractNik,
        tooltip: 'Ambil Gambar dan Ekstrak NIK',
        child: const Icon(Icons.camera_alt),
      ),
    );
  }
}

Additional information