多次弹窗，先判断然后弹出

lib/app_upgrade_control.dart

@@ -3,6 +3,7 @@ import 'dart:io';
 import 'package:apk_update/core/common/version_info.dart';
 import 'package:apk_update/utils/toast_util.dart';
 import 'package:apk_update/utils/utils.dart';
+import 'package:flutter/material.dart';
 import 'package:get/get.dart';
 import 'apk_update_platform_interface.dart';
 import 'core/common/app_upgrade_config.dart';
@@ -46,6 +47,9 @@ class AppUpgradeControl {
 
   /// 检查下载
   void _showUpgradeDialog(VersionInfo versionInfo, String? appleId) async {
+    if (Get.isDialogOpen == true) {
+      Get.back();
+    }
     Get.dialog(
       AppUpgradeDialog(
         title: versionInfo.name,
@@ -67,6 +71,7 @@ class AppUpgradeControl {
           _downloadApk(versionInfo.versionPath ?? "");
         },
       ),
+      routeSettings: const RouteSettings(name: "app_upgrade_dialog"),
     );
   }