如何在Flutter中调用intent方法？

dependencies:
  flutter:
    sdk: flutter
  url_launcher: ^6.0.3

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

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

void main() {
  runApp(
    MaterialApp(
      home: Scaffold(
        appBar: AppBar(title: Text('Call Intent Example')),
        body: Center(child: RaisedButton(onPressed: openAppInStore, child: Text('Open App Store'))),
      ),
    ),
  );
}

void openAppInStore() async {
  const url = 'https://play.google.com/store/apps/details?id=com.example.yourapp';
  if (await canLaunch(url)) {
    await launch(url);
  } else {
    throw 'Could not launch $url';
  }
}