sendMessage method

Future<V2TimValueCallback<V2TimMessage>> sendMessage({ required String id, required String receiver, required String groupID, MessagePriorityEnum? priority = MessagePriorityEnum.V2TIM_PRIORITY_NORMAL, bool onlineUserOnly = false, bool isExcludedFromUnreadCount = false, bool isExcludedFromLastMessage = false, bool? isSupportMessageExtension = false, bool needReadReceipt = false, OfflinePushInfo? offlinePushInfo, String? cloudCustomData, String? localCustomData, })

发送消息 参数

id	消息唯一标识
receiver	消息接收者的 userID, 如果是发送 C2C 单聊消息，只需要指定 receiver 即可。
groupID	目标群组 ID，如果是发送群聊消息，只需要指定 groupID 即可。
priority	消息优先级，仅针对群聊消息有效。请把重要消息设置为高优先级（比如红包、礼物消息），高频且不重要的消息设置为低优先级（比如点赞消息）。
onlineUserOnly	是否只有在线用户才能收到，如果设置为 true ，接收方历史消息拉取不到，常被用于实现“对方正在输入”或群组里的非重要提示等弱提示功能，该字段不支持 AVChatRoom。
offlinePushInfo	离线推送时携带的标题和内容。
needReadReceipt 消息是否需要已读回执（只有 Group 消息有效，6.1 及以上版本支持，需要您购买旗舰版套餐）

Implementation

Future<V2TimValueCallback<V2TimMessage>> sendMessage({
  required String id, // 自己创建的ID
  required String receiver,
  required String groupID,
  MessagePriorityEnum? priority = MessagePriorityEnum.V2TIM_PRIORITY_NORMAL,
  bool onlineUserOnly = false,
  bool isExcludedFromUnreadCount = false,
  bool isExcludedFromLastMessage = false,
  bool? isSupportMessageExtension = false,
  bool needReadReceipt = false,
  OfflinePushInfo? offlinePushInfo,
  String? cloudCustomData, // 云自定义消息字段，只能在消息发送前添加
  String? localCustomData,
}) async {
  return ImFlutterPlatform.instance.sendMessage(
    id: id,
    receiver: receiver,
    groupID: groupID,
    priority: priority!.index,
    onlineUserOnly: onlineUserOnly,
    isExcludedFromUnreadCount: isExcludedFromUnreadCount,
    isExcludedFromLastMessage: isExcludedFromLastMessage,
    isSupportMessageExtension: isSupportMessageExtension,
    offlinePushInfo: offlinePushInfo?.toJson(),
    localCustomData: localCustomData,
    needReadReceipt: needReadReceipt,
    cloudCustomData: cloudCustomData,
  );
}