WD: vital sign changes
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229efb2e25
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21b2fae806
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import 'package:flutter/material.dart';
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import 'package:vital_sign_camera/vital_sign_camera.dart';
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class VitalSigns extends StatefulWidget {
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const VitalSigns({super.key});
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@override
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State<VitalSigns> createState() => _VitalSignState();
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}
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class _VitalSignState extends State<VitalSigns> {
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late final VitalSignCameraController _vitalSignCameraController;
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late Future<CameraDevice?> cameraDevice;
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@override
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void initState() {
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super.initState();
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cameraDevice = getFrontCamera();
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}
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double? _heartRate;
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Future<CameraDevice?> getFrontCamera() async {
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if (CameraPermissionStatus.authorized != await requestCameraPermission()) {
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return null;
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}
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return queryCameraDevice(CameraPosition.front);
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}
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@override
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Widget build(BuildContext context) {
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return MaterialApp(
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home: Scaffold(
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body: Stack(children: [
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VitalSignCamera(
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onCreated: _onVitalSignCameraCreated,
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isActive: true,
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userInfo: UserInfo(
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age: 30, gender: Gender.male, userId: '__YOUR_USER_ID__'),
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config: VitalSignCameraConfig(apiKey: '__YOUR_API_KEY__'),
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device: cameraDevice,
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onVideoFrameProcessed: _onVideoFrameProcessed),
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Center(
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child: Column(
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mainAxisAlignment: MainAxisAlignment.center,
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children: [
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ElevatedButton(
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onPressed: () {
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setState(() {
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_vitalSignCameraController.startScanning();
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});
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},
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child: const Text('start')),
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Text('Heart rate: $_heartRate'),
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],
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),
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),
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]),
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),
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);
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}
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void _onVideoFrameProcessed(VideoFrameProcessedEvent event) {
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setState(() {
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_heartRate = event.healthResult?.health?.vitalSigns.heartRate;
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});
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}
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void _onVitalSignCameraCreated(VitalSignCameraController controller) {
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_vitalSignCameraController = controller;
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}
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}
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