如何调用intent flutter打开手机信息菜单？

dependencies:
  flutter:
    sdk: flutter
  url_launcher: ^6.0.3

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

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

class MyApp extends StatelessWidget {
  @override
  Widget build(BuildContext context) {
    return MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Open Settings')),
        body: Center(
          child: ElevatedButton(
            onPressed: _openSettings,
            child: Text('Open Device Settings'),
          ),
        ),
      ),
    );
  }

  void _openSettings() async {
    const platform = const MethodChannel('com.example/settings');
    try {
      await platform.invokeMethod('openSettings');
    } on PlatformException catch (e) {
      print("Failed to open settings: ${e.message}");
    }
  }
}

package com.example

import android.content.Intent
import android.provider.Settings
import io.flutter.embedding.android.FlutterActivity
import io.flutter.plugin.common.MethodChannel

class MainActivity: FlutterActivity() {
    private val CHANNEL = "com.example/settings"

    override fun configureFlutterEngine(flutterEngine: FlutterEngine) {
        super.configureFlutterEngine(flutterEngine)
        MethodChannel(flutterEngine.dartExecutor.binaryMessenger, CHANNEL).setMethodCallHandler { call, result ->
            if (call.method == "openSettings") {
                openSettings()
                result.success(null)
            } else {
                result.notImplemented()
            }
        }
    }

    private fun openSettings() {
        val intent = Intent(Settings.ACTION_SETTINGS)
        startActivity(intent)
    }
}