Flutter计步器应用在模拟器及Galaxy S9真机上无法正常获取步数的问题求助

大家好，我是Flutter新手，最近在做一个计步器应用，但不管是iOS模拟器、安卓模拟器，还是我的Galaxy S9真机，都跑不起来，一直报错。我已经尝试了换设备和模拟器，还在AndroidManifest和iOS的Info.plist里加了对应的权限，可问题还是没解决，有没有大佬能帮我看看呀？

我的代码 #

import 'dart:async';

import 'package:flutter/material.dart';

import 'package:pedometer/pedometer.dart';

void main() => runApp(const MyApp());

class MyApp extends StatefulWidget {

const MyApp({super.key});

@override

_MyAppState createState() => _MyAppState();

}

class _MyAppState extends State<MyApp> {

late String _timeString;

int initSteps = 0;

int initKcals = 0;

double initMiles = 0.0;

int initMinutes = 0;

double progressValue = 0.0;

StreamSubscription<StepCount>? _subscription;

@override

void initState() {

super.initState();

_listenToSteps();

_timeString = _formatDateTime(DateTime.now());

Timer.periodic(const Duration(seconds: 1), (Timer t) => _getTime());

}

String _formatDateTime(DateTime dateTime) {

return '${dateTime.hour.toString().padLeft(2, '0')}:${dateTime.minute.toString().padLeft(2, '0')}';

}

void _getTime() {

final DateTime now = DateTime.now();

final String formattedDateTime = _formatDateTime(now);

setState(() {

_timeString = formattedDateTime;

});

}

void _listenToSteps() {

_subscription = Pedometer.stepCountStream.listen(

_onStepCount,

onError: _onError,

onDone: _onDone,

cancelOnError: true,

);

}

void _onStepCount(StepCount event) {

setState(() {

initSteps = event.steps;

progressValue = event.steps / 10000;

print("Step Count: ${event.steps}");

});

}

void _onDone() {} // Handle when stream is done if needed

void _onError(error) {

print("An error occurred while fetching step count: $error");

}

@override

void dispose() {

_subscription?.cancel();

super.dispose();

}

@override

Widget build(BuildContext context) {

return MaterialApp(

home: Scaffold(

backgroundColor: Colors.black,

body: Column(

children: [

Container(

padding: const EdgeInsets.fromLTRB(25.0, 65, 25.0, 0.0),

child: Row(

mainAxisAlignment: MainAxisAlignment.spaceBetween,

children: [

const Text('iCounter',

style: TextStyle(

color: Colors.green,

fontSize: 30,

fontWeight: FontWeight.bold)),

Text(_timeString,

style: const TextStyle(

color: Colors.white,

fontSize: 20,

fontWeight: FontWeight.bold)),

],

),

),

const SizedBox(height: 25.0),

LinearProgressIndicator(

value: progressValue, // progress

backgroundColor: Colors.grey, // Color of the track

valueColor: const AlwaysStoppedAnimation<Color>(

Colors.green), // Color of the progress bar

),

const SizedBox(height: 30.0),

const Row(

mainAxisAlignment: MainAxisAlignment.center,

children: [

Icon(

Icons.keyboard_arrow_left,

color: Colors.grey,

size: 60.0,

),

SizedBox(width: 30.0),

Text(

'Today',

style: TextStyle(

color: Colors.white,

fontWeight: FontWeight.bold,

fontSize: 35.0,

),

),

SizedBox(width: 30.0),

Icon(

Icons.keyboard_arrow_right,

color: Colors.grey,

size: 60.0,

),

],

),

const SizedBox(height: 48),

Center(

child: Text(

'$initSteps',

style: const TextStyle(

color: Colors.white,

fontWeight: FontWeight.bold,

fontSize: 100.0,

),

),

),

const Text(

'steps today',

style: TextStyle(

color: Colors.grey,

fontSize: 20.0,

),

),

const SizedBox(height: 30.0),

Text(

'$initSteps/10.000s',

style: const TextStyle(

color: Colors.green,

fontSize: 25.0,

fontWeight: FontWeight.bold,

),

),

const SizedBox(height: 40.0),

Row(

mainAxisAlignment: MainAxisAlignment.center,

children: [

Column(

children: [

Text(

'$initKcals',

style: const TextStyle(

color: Colors.white,

fontWeight: FontWeight.bold,

fontSize: 25.0,

),

),

const SizedBox(height: 5.0),

const Text(

'KCAL',

style: TextStyle(

color: Colors.grey,

),

),

],

),

const SizedBox(width: 50.0),

Column(

children: [

Text(

'$initMiles',

style: const TextStyle(

color: Colors.white,

fontWeight: FontWeight.bold,

fontSize: 25.0,

),

),

const SizedBox(height: 5.0),

const Text(

'MILES',

style: TextStyle(

color: Colors.grey,

),

),

],

),

const SizedBox(width: 50.0),

Column(

children: [

Text(

'$initMinutes',

style: const TextStyle(

color: Colors.white,

fontWeight: FontWeight.bold,

fontSize: 25.0,

),

),

const SizedBox(height: 5.0),

const Text(

'Minutes',

style: TextStyle(

color: Colors.grey,

),

),

],

),

],

),

const SizedBox(height: 40.0),

const Row(

mainAxisAlignment: MainAxisAlignment.center,

children: [

Column(

children: [

Icon(

Icons.circle_outlined,

color: Colors.white,

size: 50.0,

),

SizedBox(width: 8.0),

Text(

'MON',

style: TextStyle(

color: Colors.grey,

),

),

],

),

SizedBox(width: 8.0),

Column(

children: [

Icon(

Icons.circle_outlined,

color: Colors.white,

size: 50.0,

),

SizedBox(width: 8.0),

Text(

'TUE',

style: TextStyle(

color: Colors.grey,

),

),

],

),

SizedBox(width: 8.0),

Column(

children: [

Icon(

Icons.circle_outlined,

color: Colors.white,

size: 50.0,

),

SizedBox(width: 8.0),

Text(

'WED',

style: TextStyle(

color: Colors.grey,

),

),

],

),

SizedBox(width: 8.0),

Column(

children: [

Icon(

Icons.circle_outlined,

color: Colors.white,

size: 50.0,

),

SizedBox(width: 8.0),

Text(

'THU',

style: TextStyle(

color: Colors.grey,

),

),

],

),

SizedBox(width: 8.0),

Column(

children: [

Icon(

Icons.circle_outlined,

color: Colors.white,

size: 50.0,

),

SizedBox(width: 8.0),

Text(

'FRI',

style: TextStyle(

color: Colors.grey,

),

),

],

),

SizedBox(width: 8.0),

Column(

children: [

Icon(

Icons.circle_outlined,

color: Colors.white,

size: 50.0,

),

SizedBox(width: 8.0),

Text(

'SAT',

style: TextStyle(

color: Colors.grey,

),

),

],

),

SizedBox(width: 8.0),

Column(

children: [

Icon(

Icons.circle_outlined,

color: Colors.white,

size: 50.0,

),

SizedBox(width: 8.0),

Text(

'SUN',

style: TextStyle(

color: Colors.grey,

),

),

],

),

],

),

],

),

),

);

}

}

错误信息 #

D/SensorManager( 8584): registerListener fail (1) :: 1, step_counter  Non-wakeup, 0, 0,

已尝试的操作 #

• 更换过不同的模拟器和真机设备，错误依旧
• 已经在Android的AndroidManifest.xml和iOS的Info.plist中添加了计步相关的权限

实在搞不懂问题出在哪了，希望有经验的朋友能帮忙分析下，谢谢！

备注：内容来源于stack exchange，提问作者Oussama