flutter 跳转到应用市场

应���更新，先判断下载权限，有就直接后台下载地址更新，没有就跳转市场，判断市场是否是最新版本，是就更新，不是就跳转官网，
先导入decimal，url_launcher，r_upgrade，flutter_upgrade依赖
flutter_upgrade获取本地应用市场比较多

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AppStore.jumpToAppStore();

import 'dart:convert';import 'dart:io';import 'dart:math';import 'package:flutter_upgrade/flutter_upgrade.dart';import 'package:flutter_easyloading/flutter_easyloading.dart';import 'package:get/get.dart';import 'package:r_upgrade/r_upgrade.dart';import 'package:toptongpin/app/store/store.dart';import 'package:toptongpin/app/utils/toast_util.dart';import 'num_util.dart';import 'object_util.dart';import 'package:decimal/decimal.dart';import 'package:url_launcher/url_launcher.dart';class AppStore {  static StoreController storeController = Get.find();  static void jumpToAppStore() async {    EasyLoading.show();    if (Platform.isIOS) {      await getVersionFromAppStore();    } else if (Platform.isAndroid) {      await getAndroidStores();    }  }  static getVersionFromAppStore() async {    String? versionName = await RUpgrade.getVersionFromAppStore(      '1619726940', //例如:微信的AppId:414478124    );    if (ObjectUtil.isNotEmpty(versionName)) {      EasyLoading.dismiss();      jumpToIosAppStore();    } else {      EasyLoading.dismiss();      ToastUtil.success('暂未在您应用市场找到该app');    }  }  static void jumpToIosAppStore() async {    bool? isSuccess = await RUpgrade.upgradeFromAppStore(      '1619726940', //例如:微信的AppId:414478124    );    print(isSuccess);  }  static getAndroidStores() async {    final res = await FlutterUpgrade.getInstallMarket();    print(res);    if (ObjectUtil.isEmptyList(res)) {      EasyLoading.dismiss();      ToastUtil.success('暂无应用市场');    } else {      EasyLoading.dismiss();      print(res[0]);      final versionName = await RUpgrade.getVersionFromAndroidStore(          AndroidStore.internal(res[0].toString()));      print(versionName.toString() + '88888888888888888888888888');      i

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