[Fix]

lib/src/enum/message_status.dart

@@ -1,6 +1,6 @@
-class MessageStatus{
+class MessageStatus {
   static const sending = 1;
   static const succeeded = 2;
   static const failed = 3;
   static const deleted = 4;
-}
+}

lib/src/listener/advanced_msg_listener.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_openim_sdk/flutter_openim_sdk.dart';
 
-
 abstract class AdvancedMsgListener {
   /// Uniquely identifies
   final String id;

lib/src/listener/impl/friendship_listener.dart

@@ -35,7 +35,8 @@ class OnFriendshipListener extends FriendshipListener {
 
   @override
   void friendApplicationListAccept(UserInfo u) {
-    if (null != onFriendApplicationListAccept) onFriendApplicationListAccept!(u);
+    if (null != onFriendApplicationListAccept)
+      onFriendApplicationListAccept!(u);
   }
 
   @override
@@ -45,12 +46,14 @@ class OnFriendshipListener extends FriendshipListener {
 
   @override
   void friendApplicationListDeleted(UserInfo u) {
-    if (null != onFriendApplicationListDeleted) onFriendApplicationListDeleted!(u);
+    if (null != onFriendApplicationListDeleted)
+      onFriendApplicationListDeleted!(u);
   }
 
   @override
   void friendApplicationListReject(UserInfo u) {
-    if (null != onFriendApplicationListReject) onFriendApplicationListReject!(u);
+    if (null != onFriendApplicationListReject)
+      onFriendApplicationListReject!(u);
   }
 
   @override

lib/src/listener/impl/msg_send_progress_listener.dart

@@ -1,6 +1,5 @@
 import 'package:flutter_openim_sdk/flutter_openim_sdk.dart';
 
-
 class OnMsgSendProgressListener extends MsgSendProgressListener {
   Function(String msgID, int progress)? onProgress;
 

lib/src/manager/im_message_manager.dart

@@ -44,14 +44,13 @@ class MessageManager {
     bool onlineUserOnly = false,
   }) {
     return _channel.invokeMethod(
-            'sendMessage',
-            _buildParam({
-              'message': message.toJson(),
-              'receiver': userID ?? '',
-              'groupID': groupID ?? '',
-              'onlineUserOnly': onlineUserOnly,
-            }))
-        /*.then((value) => _toObj(value))*/;
+        'sendMessage',
+        _buildParam({
+          'message': message.toJson(),
+          'receiver': userID ?? '',
+          'groupID': groupID ?? '',
+          'onlineUserOnly': onlineUserOnly,
+        })) /*.then((value) => _toObj(value))*/;
   }
 
   /// Find all history message

lib/src/manager/im_offline_push_manager.dart

@@ -4,4 +4,4 @@
 //   MethodChannel _channel;
 //
 //   OfflinePushManager(this._channel);
-// }
+// }

lib/src/models/conversation_info.dart

@@ -4,6 +4,7 @@ import 'package:flutter_openim_sdk/flutter_openim_sdk.dart';
 
 class ConversationInfo {
   String conversationID;
+
   /// [ConversationType]
   int? conversationType;
   String? userID;

lib/src/models/group_info.dart

@@ -18,7 +18,7 @@ class GroupInfo {
       this.createTime,
       this.memberCount});
 
-  GroupInfo.fromJson(Map<String, dynamic> json): groupID = json['groupID'] {
+  GroupInfo.fromJson(Map<String, dynamic> json) : groupID = json['groupID'] {
     /*groupID = json['groupID'];*/
     groupName = json['groupName'];
     notification = json['notification'];

lib/src/models/message.dart

@@ -1,5 +1,3 @@
-
-
 class Message {
   String? clientMsgID;
   String? serverMsgID;
@@ -69,8 +67,8 @@ class Message {
     this.mergeElem,
   });
 
-  Message.fromJson(Map<String, dynamic> json)
-  /*  : clientMsgID = json['clientMsgID']*/ {
+  Message.fromJson(
+      Map<String, dynamic> json) /*  : clientMsgID = json['clientMsgID']*/ {
     clientMsgID = json['clientMsgID'];
     serverMsgID = json['serverMsgID'];
     createTime = json['createTime'];