UserAccountCallback localUserRegistered
read / write
本地用户成功注册 User Account 回调。
本地用户成功调用 [RtcEngine.registerLocalUserAccount](https://docs.AR.io/cn/Video/API Reference/flutter/rtc_engine/RtcEngine/registerLocalUserAccount.html) 方法注册用户 User Account,或调用 [RtcEngine.joinChannelWithUserAccount](https://docs.AR.io/cn/Video/API Reference/flutter/rtc_engine/RtcEngine/joinChannelWithUserAccount.html) 加入频道后,SDK 会触发该回调, 并告知本地用户的 UID 和 User Account。
UserAccountCallback
包含如下参数:
Implementation
UserAccountCallback localUserRegistered