cardio_flutter 1.0.1

Flutter package for Cardio SDK - measure heart rate, blood pressure, SpO2, respiratory rate, and HRV using your device camera.

example/lib/main.dart

import 'package:flutter/material.dart';
import 'package:http/http.dart' as http;
import 'dart:convert';
import 'package:cardio_flutter/cardio_flutter.dart';

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

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

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      title: 'Cardio Demo',
      theme: ThemeData(
        colorScheme: ColorScheme.fromSeed(
          seedColor: const Color(0xFF317796),
          primary: const Color(0xFF317796),
          brightness: Brightness.light,
        ),
        useMaterial3: true,
      ),
      home: const HomePage(),
    );
  }
}

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

  @override
  State<HomePage> createState() => _HomePageState();
}

class _HomePageState extends State<HomePage> {
  bool _isLoading = false;

  Future<void> _handleStartTest() async {
    setState(() => _isLoading = true);

    try {
      const String organizationId = "your-org-id";
      const String apiKey = "your-api-key";

      final response = await http
          .post(
            Uri.parse(
              'https://consumer-api.iselfietest.com/sdk/central/access-token',
            ),
            headers: {'Content-Type': 'application/json'},
            body: jsonEncode({
              'organizationId': organizationId,
              'apikey': apiKey,
            }),
          )
          .timeout(const Duration(seconds: 10));

      if (response.statusCode == 200) {
        final data = jsonDecode(response.body);
        if (data['success'] == true) {
          final String accessToken = data['access_token'];
          debugPrint('Fetched fresh access token: $accessToken');

          if (!mounted) return;

          Navigator.push(
            context,
            MaterialPageRoute(
              builder: (context) => CardioWebView(
                accessToken: accessToken,
                organizationId: organizationId,
                appUserId: "user-123",
                useAccessToken: true,
              ),
            ),
          );
        } else {
          _showError('API Error: ${data['message'] ?? 'Failed to get token'}');
        }
      } else {
        _showError('HTTP Error ${response.statusCode}: ${response.body}');
      }
    } catch (e) {
      _showError('Network Error: ${e.toString()}');
    } finally {
      if (mounted) {
        setState(() => _isLoading = false);
      }
    }
  }

  void _showError(String message) {
    if (!mounted) return;
    ScaffoldMessenger.of(context).showSnackBar(
      SnackBar(content: Text(message), backgroundColor: Colors.red),
    );
  }

  @override
  Widget build(BuildContext context) {
    return Scaffold(
      appBar: AppBar(
        title: const Text(
          'Cardio Test',
          style: TextStyle(color: Colors.white),
        ),
        backgroundColor: const Color(0xFF317796),
        iconTheme: const IconThemeData(color: Colors.white),
      ),
      body: Container(
        color: Colors.white,
        child: Center(
          child: Padding(
            padding: const EdgeInsets.all(24.0),
            child: Column(
              mainAxisAlignment: MainAxisAlignment.center,
              children: [
                const Icon(Icons.favorite, size: 80, color: Color(0xFF317796)),
                const SizedBox(height: 32),
                const Text(
                  'Cardio Test',
                  style: TextStyle(
                    fontSize: 28,
                    fontWeight: FontWeight.bold,
                    color: Color(0xFF317796),
                  ),
                ),
                const SizedBox(height: 16),
                const Text(
                  'Measure your heart rate, blood pressure,\nrespiratory rate, and blood oxygen levels\nusing just your camera',
                  textAlign: TextAlign.center,
                  style: TextStyle(fontSize: 16, color: Color(0xFF434651)),
                ),
                const SizedBox(height: 48),
                if (_isLoading)
                  const CircularProgressIndicator(
                    valueColor: AlwaysStoppedAnimation<Color>(
                      Color(0xFF317796),
                    ),
                  )
                else
                  ElevatedButton(
                    onPressed: _handleStartTest,
                    style: ElevatedButton.styleFrom(
                      backgroundColor: const Color(0xFF317796),
                      foregroundColor: Colors.white,
                      padding: const EdgeInsets.symmetric(
                        horizontal: 48,
                        vertical: 16,
                      ),
                      shape: RoundedRectangleBorder(
                        borderRadius: BorderRadius.circular(8),
                      ),
                    ),
                    child: const Text(
                      'Start Cardio Test',
                      style: TextStyle(fontSize: 18),
                    ),
                  ),
                const SizedBox(height: 32),
                const Text(
                  'Note: This will fetch a fresh access token\nautomatically before starting the test.',
                  textAlign: TextAlign.center,
                  style: TextStyle(
                    fontSize: 12,
                    color: Color(0xFF434651),
                    fontStyle: FontStyle.italic,
                  ),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }
}