Flutter健身锻炼管理插件workout的使用

workout简介

workout 插件可以帮助你在Flutter应用程序中启动健身锻炼会话，并从Wear OS和Tizen设备获取实时健康数据。此外，它还可以在iOS上启动watchOS应用。

入门指南

Wear OS

目前Health Services for Wear OS处于测试阶段。为了使用此插件，你需要确保满足以下条件：

• 在android/app/build.gradle文件中设置minSdkVersion 30
• 修改android/app/src/main/AndroidManifest.xml文件，添加必要的权限：

<!-- Required for heart rate -->
<uses-permission android:name="android.permission.BODY_SENSORS" />
<!-- Required for calories, steps, distance, speed -->
<uses-permission android:name="android.permission.ACTIVITY_RECOGNITION" />
<!-- Required to use location to estimate distance, speed -->
<uses-permission android:name="android.permission.ACCESS_FINE_LOCATION" />

Tizen

此插件要求Tizen 4.0或更高版本。需要对tizen/tizen-manifest.xml进行如下修改：

<manifest api-version="4.0" ...>
    <privileges>
        <privilege>http://tizen.org/privilege/healthinfo</privilege>
    </privileges>
    <feature name="http://tizen.org/feature/sensor.heart_rate_monitor">true</feature>
    <feature name="http://tizen.org/feature/sensor.pedometer">true</feature>
</manifest>

iOS

虽然Flutter不能直接运行在watchOS上，但可以通过iOS启动watch应用。要使这一功能正常工作，需确保：

• 手机和手表应用都具有HealthKit权限。
• 手表应用启用了Workout Processing后台模式。

支持的数据类型

示例代码

以下是完整的示例demo，演示如何使用workout插件创建一个简单的健身锻炼应用：

import 'dart:io';

import 'package:flutter/material.dart';
import 'package:wear_plus/wear_plus.dart';
import 'package:workout/workout.dart';

void main() {
  runApp(Platform.isIOS ? const MyIosApp() : const MyApp());
}

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

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

class _MyAppState extends State<MyApp> {
  final workout = Workout();

  final exerciseType = ExerciseType.walking;
  final features = [
    WorkoutFeature.heartRate,
    WorkoutFeature.calories,
    WorkoutFeature.steps,
    WorkoutFeature.distance,
    WorkoutFeature.speed,
  ];
  final enableGps = true;

  double heartRate = 0;
  double calories = 0;
  double steps = 0;
  double distance = 0;
  double speed = 0;
  bool started = false;

  _MyAppState() {
    workout.stream.listen((event) {
      debugPrint('${event.feature}: ${event.value} (${event.timestamp})');
      switch (event.feature) {
        case WorkoutFeature.unknown:
          return;
        case WorkoutFeature.heartRate:
          setState(() {
            heartRate = event.value;
          });
        case WorkoutFeature.calories:
          setState(() {
            calories = event.value;
          });
        case WorkoutFeature.steps:
          setState(() {
            steps = event.value;
          });
        case WorkoutFeature.distance:
          setState(() {
            distance = event.value;
          });
        case WorkoutFeature.speed:
          setState(() {
            speed = event.value;
          });
      }
    });
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      theme: ThemeData.dark().copyWith(scaffoldBackgroundColor: Colors.black),
      home: AmbientMode(
        builder: (context, mode, child) => child!,
        child: Scaffold(
          body: Center(
            child: Column(
              children: [
                const Spacer(),
                Text('Heart rate: $heartRate'),
                Text('Calories: ${calories.toStringAsFixed(2)}'),
                Text('Steps: $steps'),
                Text('Distance: ${distance.toStringAsFixed(2)}'),
                Text('Speed: ${speed.toStringAsFixed(2)}'),
                const Spacer(),
                TextButton(
                  onPressed: toggleExerciseState,
                  child: Text(started ? 'Stop' : 'Start'),
                ),
              ],
            ),
          ),
        ),
      ),
    );
  }

  void toggleExerciseState() async {
    if (started) {
      await workout.stop();
    } else {
      final supportedExerciseTypes = await workout.getSupportedExerciseTypes();
      debugPrint('Supported exercise types: ${supportedExerciseTypes.length}');

      final result = await workout.start(
        exerciseType: exerciseType,
        features: features,
        enableGps: enableGps,
      );

      if (result.unsupportedFeatures.isNotEmpty) {
        debugPrint('Unsupported features: ${result.unsupportedFeatures}');
      } else {
        debugPrint('All requested features supported');
      }
    }

    setState(() => started = !started);
  }
}

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

  @override
  State<StatefulWidget> createState() => _MyIosAppState();
}

class _MyIosAppState extends State<MyIosApp> {
  final workout = Workout();

  var exerciseType = ExerciseType.workout;
  var locationType = WorkoutLocationType.indoor;
  var swimmingLocationType = WorkoutSwimmingLocationType.pool;
  var lapLength = 25.0;

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        body: SafeArea(
          child: ListView(
            padding: const EdgeInsets.all(16),
            children: [
              DropdownButton<ExerciseType>(
                value: exerciseType,
                onChanged: (value) => setState(() => exerciseType = value!),
                items: ExerciseType.values
                    .map((e) => DropdownMenuItem(value: e, child: Text(e.name)))
                    .toList(),
              ),
              DropdownButton<WorkoutLocationType>(
                value: locationType,
                onChanged: (value) => setState(() => locationType = value!),
                items: WorkoutLocationType.values
                    .map((e) => DropdownMenuItem(value: e, child: Text(e.name)))
                    .toList(),
              ),
              DropdownButton<WorkoutSwimmingLocationType>(
                value: swimmingLocationType,
                onChanged: (value) =>
                    setState(() => swimmingLocationType = value!),
                items: WorkoutSwimmingLocationType.values
                    .map((e) => DropdownMenuItem(value: e, child: Text(e.name)))
                    .toList(),
              ),
              TextField(
                decoration: const InputDecoration(labelText: 'Lap length'),
                keyboardType: TextInputType.number,
                onChanged: (value) =>
                    setState(() => lapLength = double.parse(value)),
              ),
              ElevatedButton(
                onPressed: start,
                child: const Text('Start Apple Watch app'),
              ),
            ],
          ),
        ),
      ),
    );
  }

  void start() {
    workout.start(
      exerciseType: exerciseType,
      features: [],
      locationType: locationType,
      swimmingLocationType: swimmingLocationType,
      lapLength: lapLength,
    );
  }
}

通过以上代码，你可以创建一个简单的Flutter应用来管理健身锻炼，并从连接的可穿戴设备获取实时健康数据。希望这个例子能帮助你更好地理解和使用workout插件！