使用permission_handler授予位置权限

Question

我已经为位置权限创建了一个演示应用程序，但在使用permission_handler_11.3.0时我发现了MissingPluginException的问题。

import 'package:flutter/material.dart';
import 'package:flutter/services.dart';
import 'package:permission_handler/permission_handler.dart';

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

const platform = MethodChannel('your_channel_name');

Future<void> callNativeMethod() async {
  try {
     await platform.invokeMethod('nativeMethod');
  } catch (e) {
    print('Error calling native method: $e');
  }
}

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

 @override
 Widget build(BuildContext context) {
    return MaterialApp(
       title: 'Text and Button Example',
       theme: ThemeData(
              primarySwatch: Colors.blue,
       ),
       home: MyHomePage(),
   );
   }
  }

 class MyHomePage extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
  final permissionLocation = Permission.location;

  return Scaffold(
      appBar: AppBar(
      title: Text('Demo App'),
      ),
      body: Center(
          child: Column(
          mainAxisAlignment: MainAxisAlignment.center,
          children: <Widget>[
                  Text(
                      'Hello, Flutter!',
                 style: TextStyle(fontSize: 24),
            ),
         SizedBox(height: 20),
        ElevatedButton(
          onPressed: () async {
            final status = await permissionLocation.status ;
            if (status.isGranted) {
              callNativeMethod();
              print('Opening Location permission...');
            } else {
              // Permission denied
              print('Location permission denied.');
            }

          },
          child: Text('Press Me!'),
        ),
      ],
    ),
  ),
);
  }
  }

在Android Manfiest文件中添加了权限：

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

我尝试了很多方法来修复，例如：清理项目、Flutter 清理、Flutter 运行、Flutter 升级，但对我来说没有任何作用。

依赖关系：

 environment: sdk: '>=3.2.3 <4.0.0'

 permission_handler: ^11.3.0

有什么建议吗

Answer 1

您是否尝试过停止该项目然后重新启动它？涉及本机端插件的更改通常需要重新启动项目才能生效。