调整腾讯云IM SDK的初始化时机，以符合应用商店上架时的安全隐私检测。

lib/main.dart

@@ -4,7 +4,6 @@ import 'dart:io';
 import 'package:appframe/config/constant.dart';
 import 'package:appframe/config/env_config.dart';
 import 'package:appframe/config/locator.dart';
-import 'package:appframe/services/im_service.dart';
 import 'package:appframe/ui/widgets/ios_edge_swipe_detector.dart';
 import 'package:archive/archive.dart';
 import 'package:flutter/material.dart';
@@ -18,7 +17,6 @@ void main() async {
 
   await setupLocator();
   await _initH5Version();
-  await _initImSdk();
   await _initIOSGesture();
 
   runApp(const App());
@@ -58,12 +56,6 @@ Future<void> _initH5Version() async {
   }
 }
 
-Future<void> _initImSdk() async {
-  if (Constant.needIM) {
-    await getIt.get<ImService>().initSdk();
-  }
-}
-
 Future<void> _initIOSGesture() async {
   if (Platform.isIOS) {
     // ios边缘滑动检测

lib/services/im_service.dart

@@ -187,11 +187,19 @@ class ImService {
 
   V2TimAdvancedMsgListener get msgListener => _msgListener;
 
-  ///
+  // 添加初始化状态标记
+  bool _isInitialized = false;
+
+  bool get isInitialized => _isInitialized;
+
   /// 初始化 IM SDK
-  ///
   Future<bool> initSdk() async {
-    // 初始化SDK
+    // 防止重复初始化
+    if (_isInitialized) {
+      debugPrint("IM SDK 已经初始化，跳过");
+      return true;
+    }
+
     var initSDKRes = await TencentImSDKPlugin.v2TIMManager.initSDK(
       sdkAppID: Constant.imSdkAppId,
       loglevel: LogLevelEnum.V2TIM_LOG_ALL,
@@ -199,6 +207,7 @@ class ImService {
     );
 
     if (initSDKRes.code == 0) {
+      _isInitialized = true;  // 标记已初始化
       debugPrint("IM SDK 初始化成功-------- ${initSDKRes.data}");
       return true;
     } else {
@@ -225,6 +234,9 @@ class ImService {
   /// 登录 IM
   ///
   Future<bool> login(String userID) async {
+    // 登录前先初始化SDK
+    await initSdk();
+
     // 登录前先判断登录状态
     var loginStatus = await TencentImSDKPlugin.v2TIMManager.getLoginStatus();
     if (loginStatus.code == 0) {