Flutter --有没有办法通过应用程序将手机设为静音？

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

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

class MyApp extends StatelessWidget {
  static const platform = const MethodChannel('com.example.app/silent_mode');

  Future<void> setSilentMode() async {
    try {
      await platform.invokeMethod('setSilentMode');
    } on PlatformException catch (e) {
      print("Failed to set silent mode: ${e.message}");
    }
  }

  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(
          title: Text('Set Silent Mode'),
        ),
        body: Center(
          child: RaisedButton(
            child: Text('Set Silent Mode'),
            onPressed: setSilentMode,
          ),
        ),
      ),
    );
  }
}

package com.example.app;

import android.content.Context;
import android.media.AudioManager;
import androidx.annotation.NonNull;
import io.flutter.embedding.android.FlutterActivity;
import io.flutter.embedding.engine.FlutterEngine;
import io.flutter.plugin.common.MethodChannel;
import io.flutter.plugins.GeneratedPluginRegistrant;

public class MainActivity extends FlutterActivity {
    private static final String CHANNEL = "com.example.app/silent_mode";

    @Override
    public void configureFlutterEngine(@NonNull FlutterEngine flutterEngine) {
        GeneratedPluginRegistrant.registerWith(flutterEngine);

        new MethodChannel(flutterEngine.getDartExecutor().getBinaryMessenger(), CHANNEL)
                .setMethodCallHandler(
                        (call, result) -> {
                            if (call.method.equals("setSilentMode")) {
                                setSilentMode();
                                result.success(null);
                            } else {
                                result.notImplemented();
                            }
                        }
                );
    }

    private void setSilentMode() {
        AudioManager audioManager = (AudioManager) getSystemService(Context.AUDIO_SERVICE);
        audioManager.setRingerMode(AudioManager.RINGER_MODE_SILENT);
    }
}