diff --git a/CHANGELOG.md b/CHANGELOG.md
index 6dbd61e..42f702b 100644
--- a/CHANGELOG.md
+++ b/CHANGELOG.md
@@ -109,4 +109,8 @@
 ### 1.5.4
  * fix: Update sync channel message
  ### 1.5.5
- * fix: After successfully modifying the synchronization channel message, no problem was returned
\ No newline at end of file
+ * fix: After successfully modifying the synchronization channel message, no problem was returned
+ ### 1.5.6
+ * fix: Optimize reconnection and resend messages
+ ### 1.5.7
+ * fix: Optimize channel fields in cmd messages
\ No newline at end of file
diff --git a/example/lib/chatview.dart b/example/lib/chatview.dart
new file mode 100644
index 0000000..7f0875b
--- /dev/null
+++ b/example/lib/chatview.dart
@@ -0,0 +1,280 @@
+import 'package:example/const.dart';
+import 'package:example/http.dart';
+import 'package:example/msg.dart';
+import 'package:example/order_message_content.dart';
+import 'package:flutter/material.dart';
+import 'package:wukongimfluttersdk/type/const.dart';
+import 'package:wukongimfluttersdk/wkim.dart';
+
+import 'popmenu_util.dart';
+import 'popup_item.dart';
+
+getChannelAvatarURL(UIMsg uiMsg) {
+  var fromChannel = uiMsg.wkMsg.getFrom();
+  if (fromChannel != null && fromChannel.avatar != '') {
+    return HttpUtils.getAvatarUrl(fromChannel.channelID);
+  }
+  WKIM.shared.channelManager
+      .fetchChannelInfo(uiMsg.wkMsg.fromUID, WKChannelType.personal);
+  return '';
+}
+
+Widget chatAvatar(UIMsg uiMsg) {
+  return Image.network(
+    getChannelAvatarURL(uiMsg),
+    height: 40,
+    width: 40,
+    fit: BoxFit.cover,
+    errorBuilder:
+        (BuildContext context, Object exception, StackTrace? stackTrace) {
+      return Image.asset(
+        'assets/ic_default_avatar.png',
+        width: 40,
+        height: 40,
+      );
+    },
+  );
+}
+
+longClick(
+    UIMsg uiMsg, BuildContext context, LongPressStartDetails details) async {
+  List<PopupItem> items = [];
+  items.add(PopupItem(
+    text: '删除',
+    onTap: () {
+      HttpUtils.deleteMsg(
+          uiMsg.wkMsg.clientMsgNO,
+          uiMsg.wkMsg.channelID,
+          uiMsg.wkMsg.channelType,
+          uiMsg.wkMsg.messageSeq,
+          uiMsg.wkMsg.messageID);
+    },
+  ));
+  if (uiMsg.wkMsg.fromUID == UserInfo.uid &&
+      uiMsg.wkMsg.status == WKSendMsgResult.sendSuccess) {
+    items.add(PopupItem(
+      text: '撤回',
+      onTap: () {
+        HttpUtils.revokeMsg(
+            uiMsg.wkMsg.clientMsgNO,
+            uiMsg.wkMsg.channelID,
+            uiMsg.wkMsg.channelType,
+            uiMsg.wkMsg.messageSeq,
+            uiMsg.wkMsg.messageID);
+      },
+    ));
+  }
+  await PopmenuUtil.showPopupMenu(context, details, items);
+}
+
+Widget orderView(UIMsg uiMsg, BuildContext context) {
+  var leftMargin = 60.0;
+  var rightMargin = 5.0;
+  if (uiMsg.wkMsg.fromUID != UserInfo.uid) {
+    leftMargin = 10.0;
+    rightMargin = 60.0;
+  }
+  var orderContent = uiMsg.wkMsg.messageContent as OrderMsg;
+  return Expanded(
+    child: GestureDetector(
+      onLongPressStart: (details) {
+        longClick(uiMsg, context, details);
+      },
+      child: Container(
+        padding: const EdgeInsets.only(left: 5, top: 5, right: 5, bottom: 5),
+        margin: EdgeInsets.only(
+            left: leftMargin, top: 0, right: rightMargin, bottom: 0),
+        decoration: const BoxDecoration(
+            shape: BoxShape.rectangle,
+            borderRadius: BorderRadius.all(Radius.circular(12)),
+            color: Color.fromARGB(255, 250, 250, 250)),
+        alignment: Alignment.centerLeft,
+        child: Column(
+          children: [
+            Container(
+              margin:
+                  const EdgeInsets.only(left: 5, top: 5, right: 5, bottom: 5),
+              alignment: Alignment.centerLeft,
+              child: Text(
+                '订单号：${orderContent.orderNo}',
+                style: const TextStyle(
+                    color: Colors.black,
+                    fontSize: 18,
+                    fontWeight: FontWeight.bold),
+              ),
+            ),
+            Container(
+              margin:
+                  const EdgeInsets.only(left: 5, top: 5, right: 5, bottom: 5),
+              child: Row(
+                mainAxisAlignment: MainAxisAlignment.start,
+                children: [
+                  Image.network(
+                    orderContent.imgUrl,
+                    height: 80,
+                    width: 80,
+                    fit: BoxFit.contain,
+                    errorBuilder: (BuildContext context, Object exception,
+                        StackTrace? stackTrace) {
+                      return Image.asset('assets/ic_default_avatar.png');
+                    },
+                  ),
+                  Expanded(
+                      child: Container(
+                    margin: const EdgeInsets.only(
+                        left: 10, top: 5, right: 0, bottom: 5),
+                    child: Column(
+                      children: [
+                        Text(
+                          '商品名称：${orderContent.title}',
+                          softWrap: true,
+                          style: const TextStyle(
+                              color: Colors.black,
+                              fontSize: 16,
+                              fontWeight: FontWeight.bold),
+                        ),
+                        Row(
+                          children: [
+                            Text("\$${orderContent.price}",
+                                style: const TextStyle(
+                                    color: Colors.red,
+                                    fontSize: 14,
+                                    fontWeight: FontWeight.bold)),
+                            const SizedBox(width: 100.0),
+                            Text('共${orderContent.num}件',
+                                style: const TextStyle(
+                                    color: Colors.red,
+                                    fontSize: 14,
+                                    fontWeight: FontWeight.bold)),
+                          ],
+                        )
+                      ],
+                    ),
+                  ))
+                ],
+              ),
+            ),
+          ],
+        ),
+      ),
+    ),
+  );
+}
+
+Widget getRevokedView(UIMsg uiMsg, BuildContext context) {
+  return Container(
+    alignment: Alignment.center,
+    margin: const EdgeInsets.only(left: 60, top: 10, right: 60, bottom: 10),
+    child: const Text('消息被撤回',
+        style: TextStyle(
+            color: Colors.black, fontSize: 14, fontWeight: FontWeight.bold)),
+  );
+}
+
+Widget getSendView(UIMsg uiMsg, BuildContext context) {
+  if (uiMsg.wkMsg.contentType == 56) {
+    return orderView(uiMsg, context);
+  } else {
+    return sendTextView(uiMsg, context);
+  }
+}
+
+Widget getRecvView(UIMsg uiMsg, BuildContext context) {
+  if (uiMsg.wkMsg.contentType == 56) {
+    return orderView(uiMsg, context);
+  } else {
+    return recvTextView(uiMsg, context);
+  }
+}
+
+Widget recvTextView(UIMsg uiMsg, BuildContext context) {
+  return Expanded(
+    child: GestureDetector(
+      onLongPressStart: (details) {
+        longClick(uiMsg, context, details);
+      },
+      child: Container(
+        alignment: Alignment.centerLeft,
+        margin: const EdgeInsets.only(left: 10, top: 0, right: 60, bottom: 0),
+        child: Container(
+          padding:
+              const EdgeInsets.only(left: 10, top: 5, right: 10, bottom: 5),
+          decoration: const BoxDecoration(
+              shape: BoxShape.rectangle,
+              borderRadius: BorderRadius.all(Radius.circular(12)),
+              color: Color.fromARGB(255, 163, 33, 243)),
+          child: Column(
+            children: [
+              Container(
+                alignment: Alignment.topLeft,
+                child: Text(
+                  uiMsg.getShowContent(),
+                  style: const TextStyle(color: Colors.white, fontSize: 16),
+                ),
+              ),
+              Row(
+                mainAxisAlignment: MainAxisAlignment.end,
+                children: [
+                  Text(
+                    uiMsg.getShowTime(),
+                    style: const TextStyle(
+                        color: Color.fromARGB(255, 226, 215, 215),
+                        fontSize: 12),
+                  )
+                ],
+              )
+            ],
+          ),
+        ),
+      ),
+    ),
+  );
+}
+
+Widget sendTextView(UIMsg uiMsg, BuildContext context) {
+  var alignment = Alignment.bottomRight;
+  if (uiMsg.wkMsg.fromUID != UserInfo.uid) {
+    alignment = Alignment.centerLeft;
+  }
+  return Expanded(
+    child: GestureDetector(
+      onLongPressStart: (details) {
+        longClick(uiMsg, context, details);
+      },
+      child: Container(
+        padding: const EdgeInsets.only(left: 5, top: 3, right: 5, bottom: 3),
+        margin: const EdgeInsets.only(left: 60, top: 0, right: 5, bottom: 0),
+        decoration: const BoxDecoration(
+            shape: BoxShape.rectangle,
+            borderRadius: BorderRadius.all(Radius.circular(12)),
+            color: Color.fromARGB(255, 9, 75, 243)),
+        alignment: alignment,
+        child: Column(
+          children: [
+            Container(
+              alignment: Alignment.centerLeft,
+              child: Text(
+                uiMsg.getShowContent(),
+                style: const TextStyle(color: Colors.white, fontSize: 16),
+              ),
+            ),
+            Row(
+              mainAxisAlignment: MainAxisAlignment.end,
+              children: [
+                Text(
+                  uiMsg.getShowTime(),
+                  style: const TextStyle(
+                      color: Color.fromARGB(255, 226, 215, 215), fontSize: 12),
+                ),
+                Image(
+                    image: AssetImage(uiMsg.getStatusIV()),
+                    width: 30,
+                    height: 30)
+              ],
+            ),
+          ],
+        ),
+      ),
+    ),
+  );
+}
diff --git a/example/lib/contestation.dart b/example/lib/conversation_msg.dart
similarity index 100%
rename from example/lib/contestation.dart
rename to example/lib/conversation_msg.dart
diff --git a/example/lib/custom_message.dart b/example/lib/custom_message.dart
deleted file mode 100644
index 82da3df..0000000
--- a/example/lib/custom_message.dart
+++ /dev/null
@@ -1,23 +0,0 @@
-import 'package:wukongimfluttersdk/model/wk_message_content.dart';
-
-class CustomMsg extends WKMessageContent {
-  var name = "";
-  CustomMsg(this.name) {
-    contentType = 12;
-  }
-  @override
-  Map<String, dynamic> encodeJson() {
-    return {"name": name};
-  }
-
-  @override
-  WKMessageContent decodeJson(Map<String, dynamic> json) {
-    name = json["name"];
-    return this;
-  }
-
-  @override
-  String displayText() {
-    return "我是自定义消息：$name";
-  }
-}
diff --git a/example/lib/http.dart b/example/lib/http.dart
index fd734a5..e48cd96 100644
--- a/example/lib/http.dart
+++ b/example/lib/http.dart
@@ -1,15 +1,25 @@
-import 'dart:convert';
 import 'dart:io';
 
 import 'package:dio/dio.dart';
 import 'package:dio/io.dart';
 import 'package:example/const.dart';
+import 'package:wukongimfluttersdk/entity/channel.dart';
 import 'package:wukongimfluttersdk/entity/conversation.dart';
 import 'package:wukongimfluttersdk/entity/msg.dart';
+import 'package:wukongimfluttersdk/type/const.dart';
+import 'package:wukongimfluttersdk/wkim.dart';
 
 class HttpUtils {
   // static String apiURL = "https://api.githubim.com";
-  static String apiURL = "http://175.27.245.108:15001";
+  static String apiURL = "http://62.234.8.38:7090/v1";
+  // static String apiURL = "http://175.27.245.108:15001";
+  static getAvatarUrl(String uid) {
+    return "$apiURL/users/$uid/avatar";
+  }
+
+  static getGroupAvatarUrl(String gid) {
+    return "$apiURL/groups/$gid/avatar";
+  }
 
   static Future<int> login(String uid, String token) async {
     final httpClient = HttpClient();
@@ -23,7 +33,7 @@ class HttpUtils {
       ..onHttpClientCreate = (client) {
         return httpClient;
       };
-    final response = await dio.post("$apiURL/user/token", data: {
+    final response = await dio.post("$apiURL/user/login", data: {
       'uid': uid,
       'token': token,
       'device_flag': 0,
@@ -32,7 +42,7 @@ class HttpUtils {
     return response.statusCode!;
   }
 
-  static Future<String> getIP() async {
+  static Future<String> getIP(String uid) async {
     final httpClient = HttpClient();
     httpClient.badCertificateCallback =
         (X509Certificate cert, String host, int port) {
@@ -45,7 +55,7 @@ class HttpUtils {
         return httpClient;
       };
     String ip = '';
-    final response = await dio.get('$apiURL/route');
+    final response = await dio.get('$apiURL/users/$uid/route');
     if (response.statusCode == HttpStatus.ok) {
       ip = response.data['tcp_addr'];
     }
@@ -65,26 +75,29 @@ class HttpUtils {
       ..onHttpClientCreate = (client) {
         return httpClient;
       };
+
     final response = await dio.post('$apiURL/conversation/sync', data: {
-      "uid": UserInfo.uid, // 当前登录用户uid
+      "login_uid": UserInfo.uid, // 当前登录用户uid
       "version": version, //  当前客户端的会话最大版本号(从保存的结果里取最大的version，如果本地没有数据则传0)，
       "last_msg_seqs":
           lastSsgSeqs, //   客户端所有频道会话的最后一条消息序列号拼接出来的同步串 格式： channelID:channelType:last_msg_seq|channelID:channelType:last_msg_seq  （此字段非必填，如果不填就获取全量数据，填写了获取增量数据，看你自己的需求。）
-      "msg_count": 10 // 每个会话获取最大的消息数量，一般为app点进去第一屏的数据
+      "msg_count": 10, // 每个会话获取最大的消息数量，一般为app点进去第一屏的数据
+      "device_uuid": UserInfo.uid,
     });
     // print(response.data);
     WKSyncConversation conversation = WKSyncConversation();
     conversation.conversations = [];
+
     if (response.statusCode == HttpStatus.ok) {
       try {
-        var list = response.data;
+        var list = response.data['conversations'];
         // var list = jsonDecode(response.data);
         for (int i = 0; i < list.length; i++) {
           var json = list[i];
           WKSyncConvMsg convMsg = WKSyncConvMsg();
           convMsg.channelID = json['channel_id'];
           convMsg.channelType = json['channel_type'];
-          convMsg.unread = json['unread'];
+          convMsg.unread = json['unread'] ?? 0;
           convMsg.timestamp = json['timestamp'];
           convMsg.lastMsgSeq = json['last_msg_seq'];
           convMsg.lastClientMsgNO = json['last_client_msg_no'];
@@ -127,7 +140,7 @@ class HttpUtils {
       ..onHttpClientCreate = (client) {
         return httpClient;
       };
-    final response = await dio.post('$apiURL/channel/messagesync', data: {
+    final response = await dio.post('$apiURL/message/channel/sync', data: {
       "login_uid": UserInfo.uid, // 当前登录用户uid
       "channel_id": channelID, //  频道ID
       "channel_type": channelType, // 频道类型
@@ -163,14 +176,303 @@ class HttpUtils {
     msg.clientMsgNO = json['client_msg_no'];
     msg.messageSeq = json['message_seq'];
     msg.fromUID = json['from_uid'];
+    msg.isDeleted = json['is_deleted'];
     msg.timestamp = json['timestamp'];
     //  msg.payload = json['payload'];
-    String payload = json['payload'];
+
+    // String payload = json['payload'];
     try {
-      msg.payload = jsonDecode(utf8.decode(base64Decode(payload)));
+      msg.payload = json['payload'];
+      // msg.payload = jsonDecode(utf8.decode(base64Decode(payload)));
     } catch (e) {
       // print('异常了');
     }
+    // 解析扩展
+    var extraJson = json['message_extra'];
+    if (extraJson != null) {
+      var extra = getMsgExtra(extraJson);
+      msg.messageExtra = extra;
+    }
     return msg;
   }
+
+  static WKSyncExtraMsg getMsgExtra(dynamic extraJson) {
+    var extra = WKSyncExtraMsg();
+    extra.messageID = extraJson['message_id'];
+    extra.messageIdStr = extraJson['message_id_str'];
+    extra.revoke = extraJson['revoke'] ?? 0;
+    extra.revoker = extraJson['revoker'] ?? '';
+    extra.readed = extraJson['readed'] ?? 0;
+    extra.readedCount = extraJson['readed_count'] ?? 0;
+    extra.isMutualDeleted = extraJson['is_mutual_deleted'] ?? 0;
+    return extra;
+  }
+
+  static getGroupInfo(String groupId) async {
+    final httpClient = HttpClient();
+    httpClient.badCertificateCallback =
+        (X509Certificate cert, String host, int port) {
+      // 信任所有证书
+      return true;
+    };
+    final dio = Dio();
+    dio.httpClientAdapter = DefaultHttpClientAdapter()
+      ..onHttpClientCreate = (client) {
+        return httpClient;
+      };
+    final response = await dio.get('$apiURL/groups/$groupId');
+    if (response.statusCode == HttpStatus.ok) {
+      var json = response.data;
+      var channel = WKChannel(groupId, WKChannelType.group);
+      channel.channelName = json['name'];
+      channel.avatar = json['avatar'];
+      WKIM.shared.channelManager.addOrUpdateChannel(channel);
+    } else {
+      print('获取群信息失败');
+    }
+  }
+
+  static getUserInfo(String uid) async {
+    final httpClient = HttpClient();
+    httpClient.badCertificateCallback =
+        (X509Certificate cert, String host, int port) {
+      // 信任所有证书
+      return true;
+    };
+    final dio = Dio();
+    dio.httpClientAdapter = DefaultHttpClientAdapter()
+      ..onHttpClientCreate = (client) {
+        return httpClient;
+      };
+    try {
+      final response = await dio.get('$apiURL/users/$uid');
+      if (response.statusCode == HttpStatus.ok) {
+        var json = response.data;
+        var channel = WKChannel(uid, WKChannelType.personal);
+        channel.channelName = json['name'];
+        channel.avatar = json['avatar'];
+        WKIM.shared.channelManager.addOrUpdateChannel(channel);
+      }
+    } catch (e) {
+      print('获取用户信息失败$e');
+    }
+  }
+
+  static revokeMsg(String clientMsgNo, String channelId, int channelType,
+      int msgSeq, String msgId) async {
+    final httpClient = HttpClient();
+    httpClient.badCertificateCallback =
+        (X509Certificate cert, String host, int port) {
+      // 信任所有证书
+      return true;
+    };
+    final dio = Dio();
+    dio.httpClientAdapter = DefaultHttpClientAdapter()
+      ..onHttpClientCreate = (client) {
+        return httpClient;
+      };
+    try {
+      final response = await dio.post('$apiURL/message/revoke', data: {
+        'login_uid': UserInfo.uid,
+        'channel_id': channelId,
+        'channel_type': channelType,
+        'client_msg_no': clientMsgNo,
+        'message_id': msgId,
+      });
+      if (response.statusCode == HttpStatus.ok) {
+        print('撤回消息成功');
+      }
+    } catch (e) {
+      print('获取用户信息失败$e');
+    }
+  }
+
+  static deleteMsg(String clientMsgNo, String channelId, int channelType,
+      int msgSeq, String msgId) async {
+    final httpClient = HttpClient();
+    httpClient.badCertificateCallback =
+        (X509Certificate cert, String host, int port) {
+      // 信任所有证书
+      return true;
+    };
+    final dio = Dio();
+    dio.httpClientAdapter = DefaultHttpClientAdapter()
+      ..onHttpClientCreate = (client) {
+        return httpClient;
+      };
+    try {
+      final response = await dio.delete('$apiURL/message', data: {
+        'login_uid': UserInfo.uid,
+        'channel_id': channelId,
+        'channel_type': channelType,
+        'message_seq': msgSeq,
+        'message_id': msgId,
+      });
+      if (response.statusCode == HttpStatus.ok) {
+        WKIM.shared.messageManager.deleteWithClientMsgNo(clientMsgNo);
+      }
+    } catch (e) {
+      print('删除消息失败$e');
+    }
+  }
+
+  static syncMsgExtra(String channelId, int channelType, int version) async {
+    final httpClient = HttpClient();
+    httpClient.badCertificateCallback =
+        (X509Certificate cert, String host, int port) {
+      // 信任所有证书
+      return true;
+    };
+    final dio = Dio();
+    dio.httpClientAdapter = DefaultHttpClientAdapter()
+      ..onHttpClientCreate = (client) {
+        return httpClient;
+      };
+    try {
+      final response = await dio.post('$apiURL/message/extra/sync', data: {
+        'login_uid': UserInfo.uid,
+        'channel_id': channelId,
+        'channel_type': channelType,
+        'source': UserInfo.uid,
+        'limit': 100,
+        'extra_version': version,
+      });
+      if (response.statusCode == HttpStatus.ok) {
+        var arrJson = response.data;
+        if (arrJson != null && arrJson.length > 0) {
+          List<WKMsgExtra> list = [];
+          for (int i = 0; i < arrJson.length; i++) {
+            var extraJson = arrJson[i];
+            WKMsgExtra extra = WKMsgExtra();
+            extra.messageID = extraJson['message_id_str'];
+            extra.revoke = extraJson['revoke'] ?? 0;
+            extra.revoker = extraJson['revoker'] ?? '';
+            extra.readed = extraJson['readed'] ?? 0;
+            extra.readedCount = extraJson['readed_count'] ?? 0;
+            extra.isMutualDeleted = extraJson['is_mutual_deleted'] ?? 0;
+            list.add(extra);
+          }
+          WKIM.shared.messageManager.saveRemoteExtraMsg(list);
+        }
+      }
+    } catch (e) {
+      print('同步消息扩展失败$e');
+    }
+  }
+
+  // 清空红点
+  static clearUnread(String channelId, int channelType) async {
+    final httpClient = HttpClient();
+    httpClient.badCertificateCallback =
+        (X509Certificate cert, String host, int port) {
+      // 信任所有证书
+      return true;
+    };
+    final dio = Dio();
+    dio.httpClientAdapter = DefaultHttpClientAdapter()
+      ..onHttpClientCreate = (client) {
+        return httpClient;
+      };
+    try {
+      final response = await dio.put('$apiURL/conversation/clearUnread', data: {
+        'login_uid': UserInfo.uid,
+        'channel_id': channelId,
+        'channel_type': channelType,
+        'unread': 0,
+      });
+      if (response.statusCode == HttpStatus.ok) {
+        print('清空红点成功');
+      }
+    } catch (e) {
+      print('清空红点失败$e');
+    }
+  }
+
+  // 清除频道消息
+  static clearChannelMsg(String channelId, int channelType) async {
+    final httpClient = HttpClient();
+    httpClient.badCertificateCallback =
+        (X509Certificate cert, String host, int port) {
+      // 信任所有证书
+      return true;
+    };
+    final dio = Dio();
+    dio.httpClientAdapter = DefaultHttpClientAdapter()
+      ..onHttpClientCreate = (client) {
+        return httpClient;
+      };
+    try {
+      int maxSeq = await WKIM.shared.messageManager
+          .getMaxMessageSeq(channelId, channelType);
+      final response = await dio.post('$apiURL/message/offset', data: {
+        'login_uid': UserInfo.uid,
+        'channel_id': channelId,
+        'channel_type': channelType,
+        'message_seq': maxSeq
+      });
+      if (response.statusCode == HttpStatus.ok) {
+        WKIM.shared.messageManager.clearWithChannel(channelId, channelType);
+      }
+    } catch (e) {
+      print('清除频道消息失败$e');
+    }
+  }
+
+  // 创建群
+  static Future<bool> createGroup(String groupNo) async {
+    final httpClient = HttpClient();
+    httpClient.badCertificateCallback =
+        (X509Certificate cert, String host, int port) {
+      // 信任所有证书
+      return true;
+    };
+    final dio = Dio();
+    dio.httpClientAdapter = DefaultHttpClientAdapter()
+      ..onHttpClientCreate = (client) {
+        return httpClient;
+      };
+    try {
+      final response = await dio.post('$apiURL/group/create', data: {
+        'login_uid': UserInfo.uid,
+        'group_no': groupNo,
+      });
+      if (response.statusCode == HttpStatus.ok) {
+        return true;
+      } else {
+        return false;
+      }
+    } catch (e) {
+      print('创建群失败$e');
+      return false;
+    }
+  }
+
+  // 修改群名称
+  static Future<bool> updateGroupName(String groupNo, String groupName) async {
+    final httpClient = HttpClient();
+    httpClient.badCertificateCallback =
+        (X509Certificate cert, String host, int port) {
+      // 信任所有证书
+      return true;
+    };
+    final dio = Dio();
+    dio.httpClientAdapter = DefaultHttpClientAdapter()
+      ..onHttpClientCreate = (client) {
+        return httpClient;
+      };
+    try {
+      final response = await dio.put('$apiURL/groups/$groupNo', data: {
+        'login_uid': UserInfo.uid,
+        'name': groupName,
+      });
+      if (response.statusCode == HttpStatus.ok) {
+        return true;
+      } else {
+        return false;
+      }
+    } catch (e) {
+      print('修改群名称失败$e');
+      return false;
+    }
+  }
 }
diff --git a/example/lib/im.dart b/example/lib/im.dart
index aa92ab5..af5e32f 100644
--- a/example/lib/im.dart
+++ b/example/lib/im.dart
@@ -1,13 +1,12 @@
 import 'package:example/const.dart';
 import 'package:wukongimfluttersdk/common/options.dart';
-import 'package:wukongimfluttersdk/entity/channel.dart';
 import 'package:wukongimfluttersdk/model/wk_image_content.dart';
 import 'package:wukongimfluttersdk/model/wk_video_content.dart';
 import 'package:wukongimfluttersdk/model/wk_voice_content.dart';
 import 'package:wukongimfluttersdk/type/const.dart';
 import 'package:wukongimfluttersdk/wkim.dart';
 
-import 'custom_message.dart';
+import 'order_message_content.dart';
 import 'http.dart';
 
 class IMUtils {
@@ -15,7 +14,7 @@ class IMUtils {
     bool result = await WKIM.shared
         .setup(Options.newDefault(UserInfo.uid, UserInfo.token));
     WKIM.shared.options.getAddr = (Function(String address) complete) async {
-      String ip = await HttpUtils.getIP();
+      String ip = await HttpUtils.getIP(UserInfo.uid);
       complete(ip);
     };
     if (result) {
@@ -24,57 +23,64 @@ class IMUtils {
     }
     // 注册自定义消息
     WKIM.shared.messageManager
-        .registerMsgContent(12, (data) => CustomMsg("").decodeJson(data));
+        .registerMsgContent(56, (data) => OrderMsg().decodeJson(data));
     return result;
   }
 
+  // 监听sdk事件
+  // 以下事件必须得实现
   static initListener() {
-    var imgs = [
-      "https://lmg.jj20.com/up/allimg/tx29/06052048151752929.png",
-      "https://pic.imeitou.com/uploads/allimg/2021061715/aqg1wx3nsds.jpg",
-      "https://lmg.jj20.com/up/allimg/tx30/10121138219844229.jpg",
-      "https://lmg.jj20.com/up/allimg/tx30/10121138219844229.jpg",
-      "https://lmg.jj20.com/up/allimg/tx28/430423183653303.jpg",
-      "https://lmg.jj20.com/up/allimg/tx23/520420024834916.jpg",
-      "https://himg.bdimg.com/sys/portraitn/item/public.1.a535a65d.tJe8MgWmP8zJ456B73Kzfg",
-      "https://img2.baidu.com/it/u=3324164588,1070151830&fm=253&fmt=auto&app=120&f=JPEG?w=500&h=500",
-      "https://img1.baidu.com/it/u=3916753633,2634890492&fm=253&fmt=auto&app=138&f=JPEG?w=400&h=400",
-      "https://img0.baidu.com/it/u=4210586523,443489101&fm=253&fmt=auto&app=138&f=JPEG?w=304&h=304",
-      "https://img2.baidu.com/it/u=2559320899,1546883787&fm=253&fmt=auto&app=138&f=JPEG?w=441&h=499",
-      "https://img0.baidu.com/it/u=2952429745,3806929819&fm=253&fmt=auto&app=138&f=JPEG?w=380&h=380",
-      "https://img2.baidu.com/it/u=3783923022,668713258&fm=253&fmt=auto&app=138&f=JPEG?w=500&h=500",
-    ];
-
+    // 监听同步消息扩展
+    WKIM.shared.cmdManager.addOnCmdListener('sys_im', (wkcmd) async {
+      if (wkcmd.cmd == 'messageRevoke') {
+        var channelID = wkcmd.param['channel_id'];
+        var channelType = wkcmd.param['channel_type'];
+        if (channelID != '') {
+          // 同步消息扩展
+          var maxVersion = await WKIM.shared.messageManager
+              .getMaxExtraVersionWithChannel(channelID, channelType);
+          HttpUtils.syncMsgExtra(channelID, channelType, maxVersion);
+        }
+      } else if (wkcmd.cmd == 'channelUpdate') {
+        var channelID = wkcmd.param['channel_id'];
+        var channelType = wkcmd.param['channel_type'];
+        if (channelID != '') {
+          if (channelType == WKChannelType.personal) {
+            // 同步个人信息
+            HttpUtils.getUserInfo(channelID);
+          } else if (channelType == WKChannelType.group) {
+            // 同步群信息
+            HttpUtils.getGroupInfo(channelID);
+          }
+        }
+      } else if (wkcmd.cmd == 'unreadClear') {
+        print('清空红点的cmd');
+        // 未读消息清除
+        var channelID = wkcmd.param['channel_id'];
+        var channelType = wkcmd.param['channel_type'];
+        var unread = wkcmd.param['unread'];
+        if (channelID != '') {
+          WKIM.shared.conversationManager
+              .updateRedDot(channelID, channelType, unread);
+        }
+      }
+    });
+    // 监听同步某个频道的消息
     WKIM.shared.messageManager.addOnSyncChannelMsgListener((channelID,
         channelType, startMessageSeq, endMessageSeq, limit, pullMode, back) {
-      // 同步某个频道的消息
       HttpUtils.syncChannelMsg(channelID, channelType, startMessageSeq,
           endMessageSeq, limit, pullMode, (p0) => back(p0));
     });
-    // 获取channel资料
+    // 监听获取channel资料（群/个人信息）
     WKIM.shared.channelManager
         .addOnGetChannelListener((channelId, channelType, back) {
-      print('获取频道资料');
       if (channelType == WKChannelType.personal) {
         // 获取个人资料
-        // 这里直接返回了
-        // todo 实际情况可通过API请求后返回
-        var channel = WKChannel(channelId, channelType);
-        channel.channelName = "【单聊】${channel.channelID}";
-        var index = channel.channelID.hashCode % imgs.length;
-        channel.avatar = imgs[index];
-        channel.remoteExtraMap = {'status': 1, 'notice': 'xx'};
-        channel.localExtra = {'localStatus': 1, 'localNotice': 'nxx'};
-        back(channel);
+        print('获取个人资料$channelId');
+        HttpUtils.getUserInfo(channelId);
       } else if (channelType == WKChannelType.group) {
         // 获取群资料
-        var channel = WKChannel(channelId, channelType);
-        channel.channelName = "【群聊】${channel.channelID}";
-        var index = channel.channelID.hashCode % imgs.length;
-        channel.avatar = imgs[index];
-        channel.remoteExtraMap = {'status': 2, 'notice': 'ss'};
-        channel.localExtra = {'localStatus': 2, 'localNotice': 'nss'};
-        back(channel);
+        HttpUtils.getGroupInfo(channelId);
       }
     });
     // 监听同步最近会话
diff --git a/example/lib/msg.dart b/example/lib/msg.dart
index 65a3c78..e52f6c8 100644
--- a/example/lib/msg.dart
+++ b/example/lib/msg.dart
@@ -1,6 +1,5 @@
 import 'package:wukongimfluttersdk/entity/msg.dart';
 import 'package:wukongimfluttersdk/type/const.dart';
-import 'package:wukongimfluttersdk/wkim.dart';
 
 import 'const.dart';
 
@@ -12,10 +11,6 @@ class UIMsg {
     if (wkMsg.messageContent == null) {
       return '';
     }
-    var readCount = 0;
-    if (wkMsg.wkMsgExtra != null) {
-      readCount = wkMsg.wkMsgExtra!.readedCount;
-    }
     return wkMsg.messageContent!.displayText();
     // return "${wkMsg.messageContent!.displayText()} [是否需要回执：${wkMsg.setting.receipt}]，[已读数量：$readCount]";
   }
diff --git a/example/lib/order_message_content.dart b/example/lib/order_message_content.dart
new file mode 100644
index 0000000..77dee6e
--- /dev/null
+++ b/example/lib/order_message_content.dart
@@ -0,0 +1,37 @@
+import 'package:wukongimfluttersdk/model/wk_message_content.dart';
+
+class OrderMsg extends WKMessageContent {
+  var orderNo = "";
+  var title = '';
+  var imgUrl = '';
+  var num = 0;
+  var price = 0;
+  OrderMsg() {
+    contentType = 56;
+  }
+  @override
+  Map<String, dynamic> encodeJson() {
+    return {
+      "orderNo": orderNo,
+      'title': title,
+      'imgUrl': imgUrl,
+      'num': num,
+      'price': price
+    };
+  }
+
+  @override
+  WKMessageContent decodeJson(Map<String, dynamic> json) {
+    title = json["title"];
+    orderNo = json["orderNo"];
+    imgUrl = json["imgUrl"];
+    num = json["num"];
+    price = json["price"];
+    return this;
+  }
+
+  @override
+  String displayText() {
+    return "[订单消息]";
+  }
+}
diff --git a/example/lib/popmenu_util.dart b/example/lib/popmenu_util.dart
new file mode 100644
index 0000000..a3aaf44
--- /dev/null
+++ b/example/lib/popmenu_util.dart
@@ -0,0 +1,57 @@
+import 'package:flutter/material.dart';
+
+import 'popup_item.dart';
+
+class PopmenuUtil {
+  static Future showPopupMenu(BuildContext context,
+      LongPressStartDetails details, List<PopupItem> items) {
+    final List<PopupMenuItem> popupMenuItems = [];
+    for (PopupItem item in items) {
+      PopupMenuItem popupMenuItem = PopupMenuItem(
+        // PopupMenuItem 的坑，默认为8，点击到边矩的地方会无反应
+        padding: const EdgeInsets.all(0),
+        onTap: item.onTap,
+        child: Builder(builder: (context0) {
+          // 这里需要使用 新的 context ，不然点击会无反应。
+          // 区分现有的 context
+          return GestureDetector(
+            behavior: HitTestBehavior.opaque,
+            child: Container(
+              padding: const EdgeInsets.all(8.0),
+              child: Text(
+                item.text,
+                style: const TextStyle(
+                    color: Colors.black,
+                    fontSize: 14,
+                    fontWeight: FontWeight.bold),
+              ),
+            ),
+          );
+        }),
+      );
+
+      popupMenuItems.add(popupMenuItem);
+    }
+
+    RenderBox? renderBox =
+        Overlay.of(context).context.findRenderObject() as RenderBox;
+
+    // 表示位置（在画面边缘会自动调整位置）
+    final RelativeRect position = RelativeRect.fromRect(
+      Rect.fromLTRB(
+        details.globalPosition.dx,
+        details.globalPosition.dy,
+        details.globalPosition.dx + 110, // 菜单显示位置X轴坐标
+        details.globalPosition.dy - 40, // 菜单显示位置Y轴坐标
+      ),
+      Offset.zero & renderBox.size,
+    );
+
+    return showMenu(
+        color: Colors.white,
+        context: context,
+        position: position,
+        items: popupMenuItems,
+        useRootNavigator: true);
+  }
+}
diff --git a/example/lib/popup_item.dart b/example/lib/popup_item.dart
new file mode 100644
index 0000000..1ca895c
--- /dev/null
+++ b/example/lib/popup_item.dart
@@ -0,0 +1,7 @@
+import 'package:flutter/material.dart';
+
+class PopupItem {
+  final String text;
+  final GestureTapCallback? onTap;
+  PopupItem({this.text = '', this.onTap});
+}
diff --git a/example/lib/chat.dart b/example/lib/ui_chat.dart
similarity index 62%
rename from example/lib/chat.dart
rename to example/lib/ui_chat.dart
index dc01692..4e2be5f 100644
--- a/example/lib/chat.dart
+++ b/example/lib/ui_chat.dart
@@ -1,4 +1,6 @@
 import 'package:example/const.dart';
+import 'package:example/http.dart';
+import 'package:example/order_message_content.dart';
 import 'package:flutter/material.dart';
 import 'package:wukongimfluttersdk/entity/channel.dart';
 import 'package:wukongimfluttersdk/entity/msg.dart';
@@ -7,7 +9,9 @@ import 'package:wukongimfluttersdk/proto/proto.dart';
 import 'package:wukongimfluttersdk/type/const.dart';
 import 'package:wukongimfluttersdk/wkim.dart';
 
+import 'chatview.dart';
 import 'msg.dart';
+import 'ui_input_dialog.dart';
 
 class ChatPage extends StatelessWidget {
   const ChatPage({super.key});
@@ -45,14 +49,8 @@ class ChatListDataState extends State<ChatList> {
     WKIM.shared.channelManager
         .getChannel(channelID, channelType)
         .then((channel) {
-      print(channel?.localExtra);
-      print(channel?.remoteExtraMap);
       WKIM.shared.channelManager.fetchChannelInfo(channelID, channelType);
-      if (channelType == WKChannelType.group) {
-        title = '${channel?.channelName}';
-      } else {
-        title = '${channel?.channelName}';
-      }
+      title = '${channel?.channelName}';
     });
   }
   List<UIMsg> msgList = [];
@@ -66,6 +64,20 @@ class ChatListDataState extends State<ChatList> {
   }
 
   initListener() {
+    // 监听刷新频道
+    WKIM.shared.channelManager.addOnRefreshListener('chat', (channel) {
+      if (channelID == channel.channelID) {
+        title = channel.channelName;
+      }
+      for (var i = 0; i < msgList.length; i++) {
+        if (msgList[i].wkMsg.fromUID == channel.channelID) {
+          msgList[i].wkMsg.setFrom(channel);
+        }
+      }
+      setState(() {});
+    });
+
+    // 监听发送消息入库返回
     WKIM.shared.messageManager.addOnMsgInsertedListener((wkMsg) {
       setState(() {
         msgList.add(UIMsg(wkMsg));
@@ -74,6 +86,8 @@ class ChatListDataState extends State<ChatList> {
         _scrollController.jumpTo(_scrollController.position.maxScrollExtent);
       });
     });
+
+    // 监听新消息
     WKIM.shared.messageManager.addOnNewMsgListener('chat', (msgs) {
       setState(() {
         for (var i = 0; i < msgs.length; i++) {
@@ -90,6 +104,8 @@ class ChatListDataState extends State<ChatList> {
         _scrollController.jumpTo(_scrollController.position.maxScrollExtent);
       });
     });
+
+    // 监听消息刷新
     WKIM.shared.messageManager.addOnRefreshMsgListener('chat', (wkMsg) {
       for (var i = 0; i < msgList.length; i++) {
         if (msgList[i].wkMsg.clientMsgNO == wkMsg.clientMsgNO) {
@@ -102,6 +118,19 @@ class ChatListDataState extends State<ChatList> {
       }
       setState(() {});
     });
+
+    // 监听删除消息
+    WKIM.shared.messageManager.addOnDeleteMsgListener('chat', (clientMsgNo) {
+      for (var i = 0; i < msgList.length; i++) {
+        if (msgList[i].wkMsg.clientMsgNO == clientMsgNo) {
+          setState(() {
+            msgList.removeAt(i);
+          });
+          break;
+        }
+      }
+    });
+
     // 清除聊天记录
     WKIM.shared.messageManager.addOnClearChannelMsgListener("chat",
         (channelId, channelType) {
@@ -178,67 +207,16 @@ class ChatListDataState extends State<ChatList> {
   }
 
   Widget _buildRow(UIMsg uiMsg) {
+    if (uiMsg.wkMsg.wkMsgExtra?.revoke == 1) {
+      return getRevokedView(uiMsg, context);
+    }
     if (uiMsg.wkMsg.fromUID == UserInfo.uid) {
       return Container(
         padding: const EdgeInsets.only(left: 0, top: 5, right: 0, bottom: 5),
         child: Row(
           children: [
-            Expanded(
-              child: Container(
-                padding:
-                    const EdgeInsets.only(left: 5, top: 3, right: 5, bottom: 3),
-                margin: const EdgeInsets.only(
-                    left: 60, top: 0, right: 5, bottom: 0),
-                decoration: const BoxDecoration(
-                    shape: BoxShape.rectangle,
-                    borderRadius: BorderRadius.all(Radius.circular(12)),
-                    color: Colors.blue),
-                alignment: Alignment.bottomRight,
-                child: Column(
-                  children: [
-                    Container(
-                      alignment: Alignment.centerRight,
-                      child: Text(
-                        uiMsg.getShowContent(),
-                        style:
-                            const TextStyle(color: Colors.white, fontSize: 16),
-                      ),
-                    ),
-                    Row(
-                      mainAxisAlignment: MainAxisAlignment.end,
-                      children: [
-                        Text(
-                          uiMsg.getShowTime(),
-                          style:
-                              const TextStyle(color: Colors.grey, fontSize: 12),
-                        ),
-                        Image(
-                            image: AssetImage(uiMsg.getStatusIV()),
-                            width: 30,
-                            height: 30)
-                      ],
-                    ),
-                  ],
-                ),
-              ),
-            ),
-            Container(
-              decoration: const BoxDecoration(
-                  shape: BoxShape.rectangle,
-                  borderRadius: BorderRadius.all(Radius.circular(20)),
-                  color: Color.fromARGB(255, 243, 33, 131)),
-              width: 50,
-              alignment: Alignment.center,
-              height: 50,
-              margin: const EdgeInsets.fromLTRB(0, 0, 10, 0),
-              child: Text(
-                CommonUtils.getAvatar(uiMsg.wkMsg.fromUID),
-                style: const TextStyle(
-                    color: Colors.white,
-                    fontSize: 20,
-                    fontWeight: FontWeight.bold),
-              ),
-            ),
+            getSendView(uiMsg, context),
+            chatAvatar(uiMsg),
           ],
         ),
       );
@@ -246,62 +224,7 @@ class ChatListDataState extends State<ChatList> {
       return Container(
         padding: const EdgeInsets.only(left: 0, top: 5, right: 0, bottom: 5),
         child: Row(
-          children: [
-            Container(
-              decoration: const BoxDecoration(
-                  shape: BoxShape.rectangle,
-                  borderRadius: BorderRadius.all(Radius.circular(20)),
-                  color: Color.fromARGB(255, 215, 80, 1)),
-              width: 50,
-              alignment: Alignment.center,
-              height: 50,
-              margin: const EdgeInsets.fromLTRB(0, 0, 10, 0),
-              child: Text(
-                CommonUtils.getAvatar(uiMsg.wkMsg.fromUID),
-                style: const TextStyle(
-                    color: Colors.white,
-                    fontSize: 20,
-                    fontWeight: FontWeight.bold),
-              ),
-            ),
-            Expanded(
-              child: Container(
-                alignment: Alignment.centerLeft,
-                margin: const EdgeInsets.only(
-                    left: 0, top: 0, right: 60, bottom: 0),
-                child: Container(
-                  padding: const EdgeInsets.only(
-                      left: 10, top: 3, right: 10, bottom: 3),
-                  decoration: const BoxDecoration(
-                      shape: BoxShape.rectangle,
-                      borderRadius: BorderRadius.all(Radius.circular(12)),
-                      color: Color.fromARGB(255, 163, 33, 243)),
-                  child: Column(
-                    children: [
-                      Container(
-                        alignment: Alignment.topLeft,
-                        child: Text(
-                          uiMsg.getShowContent(),
-                          style: const TextStyle(
-                              color: Colors.white, fontSize: 16),
-                        ),
-                      ),
-                      Row(
-                        mainAxisAlignment: MainAxisAlignment.end,
-                        children: [
-                          Text(
-                            uiMsg.getShowTime(),
-                            style: const TextStyle(
-                                color: Colors.grey, fontSize: 12),
-                          )
-                        ],
-                      )
-                    ],
-                  ),
-                ),
-              ),
-            )
-          ],
+          children: [chatAvatar(uiMsg), getRecvView(uiMsg, context)],
         ),
       );
     }
@@ -315,23 +238,90 @@ class ChatListDataState extends State<ChatList> {
       appBar: AppBar(
         title: Text(title),
         actions: [
-          MaterialButton(
-              child: const Text(
-                '清空记录',
-                style: TextStyle(color: Color.fromARGB(255, 4, 80, 194)),
-              ),
-              onPressed: () async {
-                var v = await WKIM.shared.messageManager
-                    .getMaxExtraVersionWithChannel(channelID, channelType);
-                print(v);
-                // WKIM.shared.messageManager
-                //     .clearWithChannel(channelID, channelType);
-              }),
+          PopupMenuButton<String>(
+            onSelected: (value) => {
+              if (value == '清空聊天记录')
+                {
+                  showDialog(
+                      context: context,
+                      builder: (context) {
+                        return AlertDialog(
+                          shape: RoundedRectangleBorder(
+                            borderRadius: BorderRadius.circular(5.0),
+                          ),
+                          backgroundColor: Colors.white,
+                          title: const Text('确认清空聊天记录？'),
+                          content: const Text('清空后将无法恢复，确定要清空吗?'),
+                          actions: <Widget>[
+                            GestureDetector(
+                              child: const Text(
+                                '取消',
+                                style: TextStyle(
+                                    color: Color.fromARGB(255, 113, 112, 112),
+                                    fontSize: 16,
+                                    fontWeight: FontWeight.bold),
+                              ),
+                              onTap: () {
+                                Navigator.of(context).pop();
+                              },
+                            ),
+                            GestureDetector(
+                              child: Container(
+                                margin: const EdgeInsets.only(left: 20),
+                                child: const Text('确认',
+                                    style: TextStyle(
+                                        color: Colors.red,
+                                        fontSize: 16,
+                                        fontWeight: FontWeight.bold)),
+                              ),
+                              onTap: () {
+                                Navigator.of(context).pop();
+                                HttpUtils.clearChannelMsg(
+                                    channelID, channelType);
+                              },
+                            ),
+                          ],
+                        );
+                      })
+                }
+              else if (value == '修改群名称')
+                {showUpdateChannelNameDialog(context)}
+            },
+            itemBuilder: (context) {
+              return getPopuMenuItems();
+            },
+          )
         ],
       ),
+      floatingActionButton: Column(
+          crossAxisAlignment: CrossAxisAlignment.end,
+          mainAxisAlignment: MainAxisAlignment.end,
+          children: [
+            FloatingActionButton(
+              heroTag: 'previous',
+              onPressed: () {
+                getPrevious();
+              },
+              tooltip: '上一页',
+              backgroundColor: Colors.transparent,
+              child: const Icon(Icons.vertical_align_top),
+            ),
+            const SizedBox(height: 10.0),
+            FloatingActionButton(
+              heroTag: 'next',
+              onPressed: () {
+                getLast();
+              },
+              backgroundColor: Colors.transparent,
+              tooltip: '下一页',
+              child: const Icon(Icons.vertical_align_bottom),
+            ),
+            const SizedBox(height: 20.0),
+          ]),
       body: Container(
         padding:
             const EdgeInsets.only(left: 10, top: 10, right: 10, bottom: 10),
+        color: const Color.fromARGB(255, 221, 221, 221),
         child: Column(
           children: [
             Expanded(
@@ -356,36 +346,22 @@ class ChatListDataState extends State<ChatList> {
                 ),
                 MaterialButton(
                   onPressed: () {
-                    getPrevious();
+                    DateTime now = DateTime.now();
+                    var orderMsg = OrderMsg();
+                    orderMsg.title = "问界M9纯电版 旗舰SUV 2024款 3.0L 自动 豪华版";
+                    orderMsg.num = 300;
+                    orderMsg.price = 20;
+                    orderMsg.orderNo = '${now.millisecondsSinceEpoch}';
+                    orderMsg.imgUrl =
+                        "https://img0.baidu.com/it/u=4245434814,3643211003&fm=253&fmt=auto&app=120&f=JPEG?w=674&h=500";
+                    WKIM.shared.messageManager.sendMessage(
+                        orderMsg, WKChannel(channelID, channelType));
                   },
                   color: Colors.brown,
-                  child:
-                      const Text("上一页", style: TextStyle(color: Colors.white)),
-                ),
-                MaterialButton(
-                  onPressed: () {
-                    WKMsgExtra extra = WKMsgExtra();
-                    extra.messageID = "112";
-                    extra.channelID = channelID;
-                    extra.channelType = channelType;
-                    extra.readed = 1;
-                    extra.extraVersion = 100871;
-                    List<WKMsgExtra> list = [];
-                    list.add(extra);
-                    WKMsgExtra extra1 = WKMsgExtra();
-                    extra1.messageID = "1122";
-                    extra1.channelID = channelID;
-                    extra1.channelType = channelType;
-                    extra1.readed = 1;
-                    extra1.extraVersion = 100872;
-                    list.add(extra1);
-                    WKIM.shared.messageManager.saveRemoteExtraMsg(list);
-                    // getLast();
-                  },
-                  color: Colors.brown,
-                  child:
-                      const Text("下一页", style: TextStyle(color: Colors.white)),
+                  child: const Text("自定义消息",
+                      style: TextStyle(color: Colors.white)),
                 ),
+                const SizedBox(width: 10.0),
                 MaterialButton(
                   onPressed: () {
                     if (content != '') {
@@ -458,10 +434,42 @@ class ChatListDataState extends State<ChatList> {
     );
   }
 
+  getPopuMenuItems() {
+    var list = <PopupMenuItem<String>>[];
+    list.add(const PopupMenuItem<String>(
+      value: '清空聊天记录',
+      child: Text('清空聊天记录'),
+    ));
+    if (channelType == WKChannelType.group) {
+      list.add(const PopupMenuItem<String>(
+        value: '修改群名称',
+        child: Text('修改群名称'),
+      ));
+    }
+    return list;
+  }
+
+  showUpdateChannelNameDialog(BuildContext context) {
+    showDialog(
+      context: context,
+      builder: (BuildContext context) => InputDialog(
+        title: const Text("请输入群名称"),
+        isOnlyText: true,
+        hintText: '请输入群名称',
+        back: (name, channelType) {
+          HttpUtils.updateGroupName(channelID, name);
+        },
+      ),
+    );
+  }
+
   @override
   void dispose() {
     super.dispose();
+    // 移出监听
     WKIM.shared.messageManager.removeNewMsgListener('chat');
     WKIM.shared.messageManager.removeOnRefreshMsgListener('chat');
+    WKIM.shared.messageManager.removeDeleteMsgListener('chat');
+    WKIM.shared.channelManager.removeOnRefreshListener('chat');
   }
 }
diff --git a/example/lib/home.dart b/example/lib/ui_conversation.dart
similarity index 81%
rename from example/lib/home.dart
rename to example/lib/ui_conversation.dart
index 9ccbe64..19d0185 100644
--- a/example/lib/home.dart
+++ b/example/lib/ui_conversation.dart
@@ -1,14 +1,16 @@
 import 'package:example/const.dart';
+import 'package:example/http.dart';
 import 'package:flutter/material.dart';
-import 'package:wukongimfluttersdk/common/logs.dart';
 import 'package:wukongimfluttersdk/entity/conversation.dart';
 import 'package:wukongimfluttersdk/entity/reminder.dart';
 import 'package:wukongimfluttersdk/type/const.dart';
 import 'package:wukongimfluttersdk/wkim.dart';
 
-import 'chat.dart';
-import 'contestation.dart';
-import 'input_dialog.dart';
+import 'popmenu_util.dart';
+import 'popup_item.dart';
+import 'ui_chat.dart';
+import 'conversation_msg.dart';
+import 'ui_input_dialog.dart';
 
 class HomePage extends StatelessWidget {
   const HomePage({super.key});
@@ -112,7 +114,7 @@ class ListViewShowDataState extends State<ListViewShowData> {
         if (msgList[i].msg.channelID == channel.channelID &&
             msgList[i].msg.channelType == channel.channelType) {
           msgList[i].msg.setWkChannel(channel);
-          msgList[i].channelAvatar = channel.avatar;
+          msgList[i].channelAvatar = "${HttpUtils.apiURL}/${channel.avatar}";
           msgList[i].channelName = channel.channelName;
           setState(() {});
           break;
@@ -173,7 +175,8 @@ class ListViewShowDataState extends State<ListViewShowData> {
     if (uiConversation.channelAvatar == '') {
       uiConversation.msg.getWkChannel().then((channel) {
         if (channel != null) {
-          uiConversation.channelAvatar = channel.avatar;
+          uiConversation.channelAvatar =
+              "${HttpUtils.apiURL}/${channel.avatar}";
         }
       });
     }
@@ -189,6 +192,10 @@ class ListViewShowDataState extends State<ListViewShowData> {
           } else {
             uiConversation.channelName = channel.channelRemark;
           }
+          if (uiConversation.channelName == '') {
+            WKIM.shared.channelManager.fetchChannelInfo(
+                uiConversation.msg.channelID, uiConversation.msg.channelType);
+          }
         } else {
           WKIM.shared.channelManager.fetchChannelInfo(
               uiConversation.msg.channelID, uiConversation.msg.channelType);
@@ -200,7 +207,8 @@ class ListViewShowDataState extends State<ListViewShowData> {
 
   Widget _buildRow(UIConversation uiMsg) {
     return Container(
-        margin: const EdgeInsets.all(10),
+        color: Colors.white,
+        padding: const EdgeInsets.all(10),
         child: Row(
           children: [
             Container(
@@ -282,7 +290,9 @@ class ListViewShowDataState extends State<ListViewShowData> {
   @override
   Widget build(BuildContext context) {
     return Scaffold(
+      backgroundColor: const Color.fromARGB(255, 221, 221, 221),
       appBar: AppBar(
+        backgroundColor: const Color.fromARGB(255, 251, 246, 246),
         title: Text(_connectionStatusStr),
       ),
       body: ListView.builder(
@@ -290,6 +300,9 @@ class ListViewShowDataState extends State<ListViewShowData> {
           itemCount: msgList.length,
           itemBuilder: (context, pos) {
             return GestureDetector(
+              onLongPressStart: (details) {
+                longClick(msgList[pos], context, details);
+              },
               onTap: () {
                 Navigator.push(
                   context,
@@ -315,46 +328,6 @@ class ListViewShowDataState extends State<ListViewShowData> {
         child: const Icon(Icons.add),
       ),
       persistentFooterButtons: [
-        ElevatedButton(
-          style: ElevatedButton.styleFrom(
-            backgroundColor: const Color.fromARGB(255, 240, 117, 2),
-          ),
-          onPressed: () {
-            WKIM.shared.conversationManager.clearAllRedDot();
-          },
-          child: const Text(
-            '清除未读',
-            style: TextStyle(color: Colors.white),
-          ),
-        ),
-        ElevatedButton(
-          style: ElevatedButton.styleFrom(
-            backgroundColor: const Color.fromARGB(255, 240, 2, 133),
-          ),
-          onPressed: () {
-            if (msgList.isEmpty) {
-              return;
-            }
-
-            List<WKReminder> list = [];
-            WKReminder reminder = WKReminder();
-            reminder.needUpload = 0;
-            reminder.type = WKMentionType.wkReminderTypeMentionMe;
-            reminder.data = '[有人@你]';
-            reminder.done = 0;
-            reminder.reminderID = 11;
-            reminder.version = 1;
-            reminder.publisher = "uid_1";
-            reminder.channelID = msgList[0].msg.channelID;
-            reminder.channelType = msgList[0].msg.channelType;
-            list.add(reminder);
-            WKIM.shared.reminderManager.saveOrUpdateReminders(list);
-          },
-          child: const Text(
-            '提醒项',
-            style: TextStyle(color: Colors.white),
-          ),
-        ),
         ElevatedButton(
           style: ElevatedButton.styleFrom(
             backgroundColor: Colors.red,
@@ -386,23 +359,57 @@ class ListViewShowDataState extends State<ListViewShowData> {
   _showDialog(BuildContext context) {
     showDialog(
       context: context,
-      builder: (BuildContext context) => InputDialog(
+      builder: (BuildContext _context) => InputDialog(
         title: const Text("创建新的聊天"),
-        back: (channelID, channelType) {
-          Navigator.push(
-            context,
-            MaterialPageRoute(
-              builder: (context) => ChatPage(),
-              settings: RouteSettings(
-                arguments: ChatChannel(
-                  channelID,
-                  channelType,
+        back: (channelID, channelType) async {
+          bool isSuccess = await HttpUtils.createGroup(channelID);
+          if (isSuccess) {
+            Navigator.push(
+              context,
+              MaterialPageRoute(
+                builder: (context) => ChatPage(),
+                settings: RouteSettings(
+                  arguments: ChatChannel(
+                    channelID,
+                    channelType,
+                  ),
                 ),
               ),
-            ),
-          );
+            );
+          }
         },
       ),
     );
   }
+
+  longClick(UIConversation uiMsg, BuildContext context,
+      LongPressStartDetails details) {
+    List<PopupItem> items = [];
+    if (uiMsg.msg.unreadCount > 0) {
+      items.add(PopupItem(
+        text: '设置已读',
+        onTap: () {
+          HttpUtils.clearUnread(uiMsg.msg.channelID, uiMsg.msg.channelType);
+        },
+      ));
+    }
+    items.add(PopupItem(
+        text: '测试提醒项',
+        onTap: () {
+          List<WKReminder> list = [];
+          WKReminder reminder = WKReminder();
+          reminder.needUpload = 0;
+          reminder.type = WKMentionType.wkReminderTypeMentionMe;
+          reminder.data = '[有人@你]';
+          reminder.done = 0;
+          reminder.reminderID = 11;
+          reminder.version = 1;
+          reminder.publisher = "uid_1";
+          reminder.channelID = uiMsg.msg.channelID;
+          reminder.channelType = uiMsg.msg.channelType;
+          list.add(reminder);
+          WKIM.shared.reminderManager.saveOrUpdateReminders(list);
+        }));
+    PopmenuUtil.showPopupMenu(context, details, items);
+  }
 }
diff --git a/example/lib/input_dialog.dart b/example/lib/ui_input_dialog.dart
similarity index 62%
rename from example/lib/input_dialog.dart
rename to example/lib/ui_input_dialog.dart
index 614ff66..c1f2da0 100644
--- a/example/lib/input_dialog.dart
+++ b/example/lib/ui_input_dialog.dart
@@ -3,12 +3,16 @@ import 'package:wukongimfluttersdk/type/const.dart';
 
 class InputDialog extends StatefulWidget {
   const InputDialog(
-      {Key? key, this.hintText = "请输入对方uid...", this.title, this.back})
+      {Key? key,
+      this.isOnlyText = false,
+      this.hintText = "请输入对方uid...",
+      this.title,
+      this.back})
       : super(key: key);
   final Function(String channelID, int channelType)? back;
   final Widget? title; // Text('New nickname'.tr)
   final String? hintText;
-
+  final bool isOnlyText;
   @override
   State<InputDialog> createState() => _InputDialogState(
       title: this.title, hintText: this.hintText, back: this.back);
@@ -31,6 +35,10 @@ class _InputDialogState extends State<InputDialog> {
   Widget build(BuildContext context) {
     return AlertDialog(
       title: title,
+      shape: RoundedRectangleBorder(
+        borderRadius: BorderRadius.circular(5.0),
+      ),
+      backgroundColor: Colors.white,
       content: SizedBox(
         height: 125,
         child: Column(
@@ -43,36 +51,37 @@ class _InputDialogState extends State<InputDialog> {
                 },
                 decoration: InputDecoration(hintText: hintText),
                 autofocus: true),
-            Row(
-              children: [
-                Radio<RadioValue>(
-                    value: RadioValue.personal,
-                    groupValue: _radioValue,
-                    onChanged: (value) {
-                      setState(() {
-                        hintText = '请输入对方uid';
-                        _radioValue = value!;
-                      });
-                    }),
-                const Text(
-                  '单聊',
-                  style: TextStyle(fontSize: 18.0),
-                ),
-                Radio<RadioValue>(
-                    value: RadioValue.group,
-                    groupValue: _radioValue,
-                    onChanged: (value) {
-                      setState(() {
-                        hintText = '请输入群Id';
-                        _radioValue = value!;
-                      });
-                    }),
-                const Text(
-                  '群聊',
-                  style: TextStyle(fontSize: 18.0),
-                ),
-              ],
-            )
+            if (!widget.isOnlyText)
+              Row(
+                children: [
+                  Radio<RadioValue>(
+                      value: RadioValue.personal,
+                      groupValue: _radioValue,
+                      onChanged: (value) {
+                        setState(() {
+                          hintText = '请输入对方uid';
+                          _radioValue = value!;
+                        });
+                      }),
+                  const Text(
+                    '单聊',
+                    style: TextStyle(fontSize: 18.0),
+                  ),
+                  Radio<RadioValue>(
+                      value: RadioValue.group,
+                      groupValue: _radioValue,
+                      onChanged: (value) {
+                        setState(() {
+                          hintText = '请输入群Id';
+                          _radioValue = value!;
+                        });
+                      }),
+                  const Text(
+                    '群聊',
+                    style: TextStyle(fontSize: 18.0),
+                  ),
+                ],
+              )
           ],
         ),
       ),
diff --git a/example/lib/main.dart b/example/lib/ui_main.dart
similarity index 97%
rename from example/lib/main.dart
rename to example/lib/ui_main.dart
index e3b0b44..0dc3ab8 100644
--- a/example/lib/main.dart
+++ b/example/lib/ui_main.dart
@@ -7,7 +7,7 @@ import 'package:flutter/material.dart';
 import 'package:flutter/services.dart';
 import 'package:wukongimfluttersdk/wkim.dart';
 
-import 'home.dart';
+import 'ui_conversation.dart';
 
 void main() {
   runApp(const MyApp());
@@ -74,7 +74,7 @@ class LoginDemoState extends State<LoginDemo> {
                           TextStyle(fontSize: 30, fontWeight: FontWeight.bold),
                     ),
                     Text(
-                      '悟空IM演示程序。当前SDK版本：V1.0.1',
+                      '悟空IM演示程序。当前SDK版本：V1.5.6',
                       textAlign: TextAlign.center,
                       style:
                           TextStyle(fontSize: 20, fontWeight: FontWeight.bold),
@@ -92,7 +92,7 @@ class LoginDemoState extends State<LoginDemo> {
                 },
                 decoration: const InputDecoration(
                     labelText: 'API基地址',
-                    hintText: 'API基地址 默认【https://api.githubim.com】'),
+                    hintText: 'API基地址 默认【http://62.234.8.38:7090/v1】'),
               ),
             ),
             Padding(
diff --git a/example/test/widget_test.dart b/example/test/widget_test.dart
index 092d222..3d0a04f 100644
--- a/example/test/widget_test.dart
+++ b/example/test/widget_test.dart
@@ -8,7 +8,7 @@
 import 'package:flutter/material.dart';
 import 'package:flutter_test/flutter_test.dart';
 
-import 'package:example/main.dart';
+import 'package:example/ui_main.dart';
 
 void main() {
   testWidgets('Counter increments smoke test', (WidgetTester tester) async {
diff --git a/lib/common/logs.dart b/lib/common/logs.dart
index 3f0841a..128381b 100644
--- a/lib/common/logs.dart
+++ b/lib/common/logs.dart
@@ -1,16 +1,24 @@
+import 'package:wukongimfluttersdk/wkim.dart';
+
 class Logs {
   static debug(Object msg) {
-    // ignore: avoid_print
-    print("debug:$msg");
+    if (WKIM.shared.options.debug) {
+      // ignore: avoid_print
+      print("debug:$msg");
+    }
   }
 
   static info(Object msg) {
-    // ignore: avoid_print
-    print("info:$msg");
+    if (WKIM.shared.options.debug) {
+      // ignore: avoid_print
+      print("info:$msg");
+    }
   }
 
   static error(Object msg) {
-    // ignore: avoid_print
-    print("error:$msg");
+    if (WKIM.shared.options.debug) {
+      // ignore: avoid_print
+      print("error:$msg");
+    }
   }
 }
diff --git a/lib/common/options.dart b/lib/common/options.dart
index d46ca81..7a1a141 100644
--- a/lib/common/options.dart
+++ b/lib/common/options.dart
@@ -4,6 +4,8 @@ class Options {
   String? uid, token;
   String? addr; // connect address IP:PORT
   int protoVersion = 0x04; // protocol version
+  int deviceFlag = 0;
+  bool debug = true;
   Function(Function(String addr) complete)?
       getAddr; // async get connect address
   Proto proto = Proto();
diff --git a/lib/entity/msg.dart b/lib/entity/msg.dart
index c178ebe..25eaf1e 100644
--- a/lib/entity/msg.dart
+++ b/lib/entity/msg.dart
@@ -50,7 +50,7 @@ class WKMsg {
     _channelInfo = wkChannel;
   }
 
-  getChannelInfo() {
+  WKChannel? getChannelInfo() {
     return _channelInfo;
   }
 
@@ -58,7 +58,7 @@ class WKMsg {
     _memberOfFrom = wkChannelMember;
   }
 
-  getMemberOfFrom() {
+  WKChannelMember? getMemberOfFrom() {
     return _memberOfFrom;
   }
 
@@ -66,7 +66,7 @@ class WKMsg {
     _from = channel;
   }
 
-  getFrom() {
+  WKChannel? getFrom() {
     return _from;
   }
 }
diff --git a/lib/manager/cmd_manager.dart b/lib/manager/cmd_manager.dart
index dde5088..69fa36a 100644
--- a/lib/manager/cmd_manager.dart
+++ b/lib/manager/cmd_manager.dart
@@ -13,6 +13,12 @@ class WKCMDManager {
   handleCMD(dynamic json) {
     String cmd = WKDBConst.readString(json, 'cmd');
     dynamic param = json['param'];
+    if (param != null && param is Map) {
+      if (!param.containsKey('channel_id')) {
+        param['channel_id'] = json['channel_id'];
+        param['channel_type'] = json['channel_type'];
+      }
+    }
     WKCMD wkcmd = WKCMD();
     wkcmd.cmd = cmd;
     wkcmd.param = param;
diff --git a/lib/manager/connect_manager.dart b/lib/manager/connect_manager.dart
index 7a74b18..4ba73d6 100644
--- a/lib/manager/connect_manager.dart
+++ b/lib/manager/connect_manager.dart
@@ -36,17 +36,18 @@ class _WKSocket {
     _isListening = false;
     _instance = null;
     try {
-      _socket?.destroy();
+      _socket?.close();
+      // _socket?.destroy();
     } finally {
       _socket = null; // 现在可以将 _socket 设置为 null
     }
   }
 
-  void send(Uint8List data) {
+  send(Uint8List data) {
     try {
       if (_socket?.remotePort != null) {
         _socket?.add(data); // 使用安全调用操作符
-        _socket?.flush();
+        return _socket?.flush();
       }
     } catch (e) {
       Logs.debug('发送消息错误$e');
@@ -78,7 +79,7 @@ class WKConnectionManager {
   Timer? checkNetworkTimer;
   final heartIntervalSecond = const Duration(seconds: 60);
   final checkNetworkSecond = const Duration(seconds: 1);
-  final HashMap<int, SendingMsg> _sendingMsgMap = HashMap();
+  final LinkedHashMap<int, SendingMsg> _sendingMsgMap = LinkedHashMap();
   HashMap<String, Function(int, int?, ConnectionInfo?)>? _connectionListenerMap;
   _WKSocket? _socket;
   addOnConnectionStatus(String key, Function(int, int?, ConnectionInfo?) back) {
@@ -270,15 +271,18 @@ class WKConnectionManager {
         setConnectionStatus(WKConnectStatus.success,
             reasoncode: connackPacket.reasonCode,
             info: ConnectionInfo(connackPacket.nodeId));
+        // Future.delayed(Duration(seconds: 1), () {
+
+        // });
         try {
           WKIM.shared.conversationManager.setSyncConversation(() {
             setConnectionStatus(WKConnectStatus.syncCompleted);
+            _resendMsg();
           });
         } catch (e) {
           Logs.error(e.toString());
         }
 
-        _resendMsg();
         _startHeartTimer();
         _startCheckNetworkTimer();
       } else {
@@ -287,6 +291,7 @@ class WKConnectionManager {
         Logs.debug('连接失败！错误->${connackPacket.reasonCode}');
       }
     } else if (packet.header.packetType == PacketType.recv) {
+      Logs.debug('收到消息');
       var recvPacket = packet as RecvPacket;
       _verifyRecvMsg(recvPacket);
       if (!recvPacket.header.noPersist) {
@@ -334,6 +339,7 @@ class WKConnectionManager {
   }
 
   _sendConnectPacket() async {
+    CryptoUtils.init();
     var deviceID = await _getDeviceID();
     var connectPacket = ConnectPacket(
         uid: WKIM.shared.options.uid!,
@@ -346,10 +352,10 @@ class WKConnectionManager {
     _sendPacket(connectPacket);
   }
 
-  _sendPacket(Packet packet) {
+  _sendPacket(Packet packet) async {
     var data = WKIM.shared.options.proto.encode(packet);
     if (!isReconnection) {
-      _socket?.send(data);
+      await _socket?.send(data);
     }
   }
 
@@ -366,8 +372,8 @@ class WKConnectionManager {
           setConnectionStatus(WKConnectStatus.noNetwork);
         } else {
           if (isReconnection) {
-            connect();
             isReconnection = false;
+            connect();
           }
         }
       });
@@ -519,13 +525,13 @@ class WKConnectionManager {
     return isDelete;
   }
 
-  _resendMsg() {
+  _resendMsg() async {
     _removeSendingMsg();
     if (_sendingMsgMap.isNotEmpty) {
-      final it = _sendingMsgMap.entries.iterator;
-      while (it.moveNext()) {
-        if (it.current.value.isCanResend) {
-          _sendPacket(it.current.value.sendPacket);
+      for (var entry in _sendingMsgMap.entries) {
+        if (entry.value.isCanResend) {
+          Logs.debug("重发消息：${entry.value.sendPacket.clientSeq}");
+          await _sendPacket(entry.value.sendPacket);
         }
       }
     }
diff --git a/lib/manager/message_manager.dart b/lib/manager/message_manager.dart
index a32b697..9d2273d 100644
--- a/lib/manager/message_manager.dart
+++ b/lib/manager/message_manager.dart
@@ -741,6 +741,9 @@ class WKMessageManager {
       map['order_seq'] = orderSeq;
       MessageDB.shared.updateMsgWithField(map, clientSeq);
       setRefreshMsg(wkMsg);
+
+      // 更新最近会话
+      WKIM.shared.conversationManager.saveWithLiMMsg(wkMsg, 0);
     }
   }
 
diff --git a/lib/wkim.dart b/lib/wkim.dart
index 19c0492..31d9573 100644
--- a/lib/wkim.dart
+++ b/lib/wkim.dart
@@ -1,4 +1,3 @@
-import 'package:wukongimfluttersdk/common/crypto_utils.dart';
 import 'package:wukongimfluttersdk/common/mode.dart';
 import 'package:wukongimfluttersdk/db/wk_db_helper.dart';
 import 'package:wukongimfluttersdk/manager/channel_manager.dart';
@@ -28,7 +27,7 @@ class WKIM {
 
   Future<bool> setup(Options opts) async {
     options = opts;
-    CryptoUtils.init();
+    deviceFlagApp = opts.deviceFlag;
     _initNormalMsgContent();
     if (isApp()) {
       bool result = await WKDBHelper.shared.init();
@@ -68,6 +67,7 @@ class WKIM {
     });
   }
 
+  @Deprecated('Use Options deviceFlag')
   void setDeviceFlag(int deviceFlag) {
     deviceFlagApp = deviceFlag;
   }
diff --git a/pubspec.yaml b/pubspec.yaml
index 4283204..751b908 100644
--- a/pubspec.yaml
+++ b/pubspec.yaml
@@ -15,7 +15,7 @@ description: wukong IM flutter sdk
 # https://developer.apple.com/library/archive/documentation/General/Reference/InfoPlistKeyReference/Articles/CoreFoundationKeys.html
 # In Windows, build-name is used as the major, minor, and patch parts
 # of the product and file versions while build-number is used as the build suffix.
-version: 1.5.5
+version: 1.5.7
 homepage: https://github.com/WuKongIM/WuKongIMFlutterSDK
 
 environment: