Flutter移动追踪插件dangple_mobile_tracker的使用

Flutter移动追踪插件dangple_mobile_tracker的使用

一个用于跟踪用户位置并监控步数和步行状态的Flutter插件。

特性

• 实时监测步数。
• 检测步行状态（如行走、停止）。
• 完全兼容Flutter应用。
• 简单的API集成步数和状态跟踪。

权限

确保应用程序请求Activity Recognition权限以跟踪步数。在你的AndroidManifest.xml文件中添加以下内容：

<uses-permission android:name="android.permission.ACTIVITY_RECOGNITION" />

使用

下面是一个使用dangple_mobile_tracker来显示步数和步行状态的示例应用：

import 'dart:async';

import 'package:dangple_mobile_tracker/dangple_mobile_tracker.dart';
import 'package:flutter/foundation.dart';
import 'package:flutter/material.dart';
import 'package:pedometer/pedometer.dart';
import 'package:permission_handler/permission_handler.dart';

String formatDate(DateTime d) {
  return d.toString().substring(0, 19);
}

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

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

  [@override](/user/override)
  State createState() => _MyAppState();
}

class _MyAppState extends State<MyApp> {
  late Stream<DangpleStepCount> _stepCountStream;
  late Stream<PedestrianStatus> _pedestrianStatusStream;
  String _status = '?', _steps = '?';

  [@override](/user/override)
  void initState() {
    super.initState();
    initPlatformState();
  }

  void onStepCount(DangpleStepCount event) {
    if (kDebugMode) {
      print(event);
    }
    setState(() {
      _steps = event.steps.toString();
    });
  }

  void onPedestrianStatusChanged(PedestrianStatus event) {
    if (kDebugMode) {
      print(event);
    }
    setState(() {
      _status = event.status;
    });
  }

  void onPedestrianStatusError(error) {
    if (kDebugMode) {
      print('onPedestrianStatusError: $error');
    }
    setState(() {
      _status = 'Pedestrian Status not available';
    });
    if (kDebugMode) {
      print(_status);
    }
  }

  void onStepCountError(error) {
    if (kDebugMode) {
      print('onStepCountError: $error');
    }
    setState(() {
      _steps = 'Step Count not available';
    });
  }

  Future<bool> _checkActivityRecognitionPermission() async {
    bool granted = await Permission.activityRecognition.isGranted;

    if (!granted) {
      granted = await Permission.activityRecognition.request() == PermissionStatus.granted;
    }

    return granted;
  }

  Future<void> initPlatformState() async {
    bool granted = await _checkActivityRecognitionPermission();
    if (!granted) {
      // 告诉用户，该应用将无法正常工作
    }

    _pedestrianStatusStream = Pedometer.pedestrianStatusStream;

    (_pedestrianStatusStream.listen(onPedestrianStatusChanged)).onError(onPedestrianStatusError);

    _stepCountStream = DangplePedometer.stepCountStream;
    _stepCountStream.listen(onStepCount).onError(onStepCountError);

    if (!mounted) return;
  }

  [@override](/user/override)
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: const Text('Pedometer Example'),
        ),
        body: Center(
          child: Column(
            mainAxisAlignment: MainAxisAlignment.center,
            children: [
              const Text(
                'Steps Taken',
                style: TextStyle(fontSize: 30),
              ),
              Text(
                _steps,
                style: const TextStyle(fontSize: 60),
              ),
              const Divider(
                height: 100,
                thickness: 0,
                color: Colors.white,
              ),
              const Text(
                'Pedestrian Status',
                style: TextStyle(fontSize: 30),
              ),
              Icon(
                _status == 'walking'
                    ? Icons.directions_walk
                    : _status == 'stopped'
                        ? Icons.accessibility_new
                        : Icons.error,
                size: 100,
              ),
              Center(
                child: Text(
                  _status,
                  style: _status == 'walking' || _status == 'stopped'
                      ? const TextStyle(fontSize: 30)
                      : const TextStyle(fontSize: 20, color: Colors.red),
                ),
              )
            ],
          ),
        ),
      ),
    );
  }
}