# sendReadReceiptMessageV4

public abstract void sendReadReceiptMessageV4(ConversationType conversationType, String targetId, String channelId, String startMessageUID, String endMessageUID, IRongCoreCallback.OperationCallback callback)

发送已读回执v4(支持单群聊)

#### Since

5.6.7

#### Parameters

conversationType

会话类型

targetId

会话 id

channelId

频道 ID，非超级群时传入 null

startMessageUID

群聊已读开始的消息UID,单聊为""

endMessageUID

已读最后一条消息的UID

callback

回调函数