simple_native 0.0.14

A comprehensive Flutter plugin for accessing native device features including Camera (Photos, QR & Barcode), Location, Device Information, and Biometric Authentication.

example/lib/main.dart

import 'dart:async';
import 'dart:io';

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:simple_native/simple_native.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 _locationInfo = 'Unknown';
  String _deviceInfo = 'Unknown';
  String _biometricInfo = 'Unknown';
  final _simpleNativePlugin = SimpleNative();

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

  Future<void> _getLocation() async {
    String locationInfo;
    try {
      final location = await _simpleNativePlugin.getCurrentLocation();
      locationInfo = location?.toString() ?? 'Location not available';
    } on PlatformException {
      locationInfo = 'Failed to get location.';
    }

    if (!mounted) return;

    setState(() {
      _locationInfo = locationInfo;
    });
  }

  Future<void> _getDeviceInfo() async {
    String deviceInfo;
    try {
      final info = await _simpleNativePlugin.getDeviceInfo();
      deviceInfo = info?.toString() ?? 'Device info not available';
    } on PlatformException {
      deviceInfo = 'Failed to get device info.';
    }

    if (!mounted) return;

    setState(() {
      _deviceInfo = deviceInfo;
    });
  }

  Future<void> _testBiometrics() async {
    String info = '';
    try {
      final type = await _simpleNativePlugin.getAvailableBiometric();
      info += 'Type: $type\n';

      if (type != SimpleBiometricType.notSupported) {
         final result = await _simpleNativePlugin.authenticate(
             localizedReason: "Please authenticate to test",
         );
         info += 'Result: $result';
      }
    } on PlatformException catch (e) {
      info = 'Failed to test biometrics: ${e.message}';
    }

    if (!mounted) return;

    setState(() {
      _biometricInfo = info;
    });
  }

  // Platform messages are asynchronous, so we initialize in an async method.
  Future<void> initPlatformState() async {
    String platformVersion;
    // Platform messages may fail, so we use a try/catch PlatformException.
    // We also handle the message potentially returning null.
    try {
      platformVersion = await _simpleNativePlugin.getPlatformVersion() ?? 'Unknown platform version';
    } on PlatformException {
      platformVersion = 'Failed to get platform version.';
    }

    // If the widget was removed from the tree while the asynchronous platform
    // message was in flight, we want to discard the reply rather than calling
    // setState to update our non-existent appearance.
    if (!mounted) return;

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: const Text('Plugin example app')),
        body: Builder(
          builder: (context) {
            return Center(
              child: SingleChildScrollView(
                child: Column(
                  mainAxisAlignment: MainAxisAlignment.center,
                  children: [
                    Text('Running on: $_platformVersion\n'),
                    Text('Location: $_locationInfo\n'),
                    Text('Device info: $_deviceInfo\n'),
                    Text('Biometric Info:\n$_biometricInfo\n', textAlign: TextAlign.center),
                    ElevatedButton(onPressed: _getLocation, child: const Text('Get Location')),
                    ElevatedButton(onPressed: _getDeviceInfo, child: const Text('Get Device Info')),
                    ElevatedButton(onPressed: _testBiometrics, child: const Text('Test Biometrics')),
                    ElevatedButton(
                      onPressed: () => _simpleNativePlugin.openBiometricSettings(), 
                      child: const Text('Open Biometric Settings')
                    ),
                    const SizedBox(height: 20),
                    ElevatedButton(
                      onPressed: () {
                        Navigator.of(context).push(MaterialPageRoute(builder: (context) => const CameraPage()));
                      },
                      child: const Text('Open Camera'),
                    ),
                  ],
                ),
              ),
            );
          },
        ),
      ),
    );
  }
}

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

  @override
  State<CameraPage> createState() => _CameraPageState();
}

class _CameraPageState extends State<CameraPage> {
  String? _result;
  SimpleCameraController? _controller;
  final ValueNotifier<Uint8List?> _vnPreviewImage = ValueNotifier(null);

  bool _onConvert = false;

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(title: const Text('Camera View')),
      body: Stack(
        children: [
          SimpleCameraView(
            cameraType: SimpleCameraType.qr,
            cameraPosition: SimpleCameraPosition.back,
            onCameraCreated: (controller) {
              // controller.onImageStream((image) async {
              //   // if (_onConvert) return;
              //   // _onConvert = true;
              //   // print('Received image: ${image.width}x${image.height}');
              //   // print('Image format: ${image.format}');
              //
              //   // Use the new toImage() method from SimpleCameraImage
              //   // _vnPreviewImage.value = image.toImage();
              //
              //   // await Future.delayed(const Duration(milliseconds: 100)); // Reduced delay for smoother preview
              //   // _onConvert = false;
              // });
              _controller = controller;
            },
            onResult: (result) {
              setState(() {
                _result = result.toString();
              });
              if (result.type == SimpleCameraResultType.qr || result.type == SimpleCameraResultType.barcode) {
                ScaffoldMessenger.of(context).showSnackBar(
                  SnackBar(
                    content: Text('${result.type == SimpleCameraResultType.qr ? "QR Code" : "Barcode"}: ${result.value}'),
                    action: SnackBarAction(
                      label: 'Resume',
                      onPressed: () {
                        _controller?.resumeScanning();
                      },
                    ),
                  ),
                );
              }
            },
          ),
          if (_result != null)
            Positioned(
              bottom: 100 + MediaQuery.viewPaddingOf(context).bottom,
              left: 20,
              right: 20,
              child: Container(
                padding: const EdgeInsets.all(8),
                color: Colors.black54,
                child: Text(_result!, style: const TextStyle(color: Colors.white)),
              ),
            ),
          Positioned(
            bottom: 30 + MediaQuery.viewPaddingOf(context).bottom,
            left: 0,
            right: 0,
            child: Center(
              child: FloatingActionButton(
                onPressed: () async {
                  final path = await _controller?.takePicture();
                  if (path != null && context.mounted) {
                    showDialog(
                      context: context,
                      builder: (context) => Dialog.fullscreen(child: Image.file(File(path))),
                    );
                  } else {
                    print('Không chụp được ảnh');
                  }
                },
                child: const Icon(Icons.camera),
              ),
            ),
          ),
          Positioned(
            top: 20,
            right: 20,
            child: Column(
              children: [
                FloatingActionButton(
                  heroTag: "switch_camera",
                  mini: true,
                  onPressed: () {
                    _controller?.switchCamera();
                  },
                  child: const Icon(Icons.switch_camera),
                ),
                const SizedBox(height: 10),
                ValueListenableBuilder(
                  valueListenable: _vnPreviewImage,
                  builder: (context, value, child) => value == null
                      ? const SizedBox.shrink()
                      : Container(
                          decoration: BoxDecoration(border: Border.all(color: Colors.white, width: 2)),
                          child: Image.memory(value, width: 100),
                        ),
                ),
              ],
            ),
          ),
        ],
      ),
    );
  }
}