如何让我的flutter应用程序让用户返回到操作系统的主屏幕？

import 'package:flutter/services.dart';

MethodChannel _channel = MethodChannel('channel_name');

_channel.invokeMethod('returnToHome');

import io.flutter.embedding.android.FlutterActivity;
import io.flutter.embedding.engine.FlutterEngine;
import io.flutter.plugin.common.MethodChannel;

public class MainActivity extends FlutterActivity {
    private static final String CHANNEL_NAME = "channel_name";

    @Override
    public void configureFlutterEngine(FlutterEngine flutterEngine) {
        super.configureFlutterEngine(flutterEngine);

        new MethodChannel(flutterEngine.getDartExecutor().getBinaryMessenger(), CHANNEL_NAME)
                .setMethodCallHandler((call, result) -> {
                    if (call.method.equals("returnToHome")) {
                        // 执行返回主屏幕的操作
                        // 例如：调用finish()方法关闭当前Activity返回到主屏幕
                        finish();
                    } else {
                        result.notImplemented();
                    }
                });
    }
}

import UIKit
import Flutter

@UIApplicationMain
@objc class AppDelegate: FlutterAppDelegate {
    private let CHANNEL_NAME = "channel_name"

    override func application(
        _ application: UIApplication,
        didFinishLaunchingWithOptions launchOptions: [UIApplication.LaunchOptionsKey: Any]?
    ) -> Bool {
        let controller : FlutterViewController = window?.rootViewController as! FlutterViewController
        let channel = FlutterMethodChannel(name: CHANNEL_NAME, binaryMessenger: controller.binaryMessenger)
        channel.setMethodCallHandler { [weak self] (call: FlutterMethodCall, result: @escaping FlutterResult) -> Void in
            if call.method == "returnToHome" {
                // 执行返回主屏幕的操作
                // 例如：调用popToRootViewControllerAnimated方法返回到主屏幕
                self?.navigationController?.popToRootViewController(animated: true)
            } else {
                result(FlutterMethodNotImplemented)
            }
        }

        GeneratedPluginRegistrant.register(with: self)
        return super.application(application, didFinishLaunchingWithOptions: launchOptions)
    }
}