Flutter Location包onLocationChanged在iOS上始终返回相同坐标求助

我使用location ^4.4.0包监听位置变化，Android端运行正常，但iOS上始终返回相同的坐标。已完成iOS端包配置，通过permission_handler获取了权限，测试设备是搭载iOS 16.3的iPhone XR，监听能正常获取数据但坐标从未更新。

相关代码 #

Location location = Location();

location.onLocationChanged.listen((LocationData currentLocation) {
     print('{"latitude": "${currentLocation.latitude}", "longitude": "${currentLocation.longitude}"}');
});

flutter doctor -v 输出 #

** flutter doctor -v **

[✓] Flutter (Channel stable, 3.7.3, on macOS 12.6 21G115 darwin-x64, locale en-PT)
    • Flutter version 3.7.3 on channel stable at /Users/tiago/Code/flutter
    • Upstream repository https://github.com/flutter/flutter.git
    • Framework revision 9944297138 (6 days ago), 2023-02-08 15:46:04 -0800
    • Engine revision 248290d6d5
    • Dart version 2.19.2
    • DevTools version 2.20.1

[✓] Android toolchain - develop for Android devices (Android SDK version 30.0.3)
    • Android SDK at /Users/tiago/Library/Android/sdk
    • Platform android-33, build-tools 30.0.3
    • ANDROID_HOME = /Users/tiago/Android/Sdk
    • Java binary at: /Applications/Android Studio.app/Contents/jre/Contents/Home/bin/java
    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)
    • All Android licenses accepted.

[✓] Xcode - develop for iOS and macOS (Xcode 14.0.1)
    • Xcode at /Applications/Xcode.app/Contents/Developer
    • Build 14A400
    • CocoaPods version 1.11.3

[✓] Chrome - develop for the web
    • Chrome at /Applications/Google Chrome.app/Contents/MacOS/Google Chrome

[✓] Android Studio (version 2021.3)
    • Android Studio at /Applications/Android Studio.app/Contents
    • Flutter plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/9212-flutter
    • Dart plugin can be installed from:
      🔨 https://plugins.jetbrains.com/plugin/6351-dart
    • Java version OpenJDK Runtime Environment (build 11.0.13+0-b1751.21-8125866)

[✓] VS Code (version 1.75.0)
    • VS Code at /Applications/Visual Studio Code.app/Contents

解决建议 #

• 调整位置精度与过滤参数：iOS默认定位精度可能偏低，手动设置高精度模式并添加距离过滤，确保移动到指定距离才触发更新：

  await location.changeSettings(
    accuracy: LocationAccuracy.high,
    distanceFilter: 10, // 单位：米
  );
  

• 确认权限类型与配置：后台监听位置需要always权限，检查Info.plist是否添加了NSLocationAlwaysAndWhenInUseUsageDescription和NSLocationWhenInUseUsageDescription字段，申请权限时明确请求Permission.locationAlways。
• 检查设备定位设置：进入iPhone设置→隐私与安全性→定位服务→你的应用，确认"精确位置"已开启，关闭该选项会返回模糊坐标且无法实时更新。
• 重启应用与设备：iOS定位服务偶尔会出现进程缓存异常，重启后可恢复正常。
• 完善初始化流程：在监听位置前，确保已完成定位服务可用性检查与权限申请：

  // 检查定位服务是否开启
  bool serviceEnabled = await location.serviceEnabled();
  if (!serviceEnabled) {
    serviceEnabled = await location.requestService();
    if (!serviceEnabled) return;
  }
  
  // 检查并申请权限
  PermissionStatus permissionGranted = await location.hasPermission();
  if (permissionGranted == PermissionStatus.denied) {
    permissionGranted = await location.requestPermission();
    if (permissionGranted != PermissionStatus.granted) return;
  }
  

• 升级location包：location ^4.4.0版本较旧，升级到最新稳定版，大概率修复了iOS 16相关的定位兼容性问题。

内容的提问来源于stack exchange，提问作者JS_LnMstr