成员的完整列表，这些成员属于 com.netease.lava.nertc.sdk.NERtcCallback,包括所有继承而来的类成员

onClientRoleChange(int oldRole, int newRole)	com.netease.lava.nertc.sdk.NERtcCallback
onDisconnect(int reason)	com.netease.lava.nertc.sdk.NERtcCallback
onJoinChannel(int result, long channelId, long elapsed, long uid)	com.netease.lava.nertc.sdk.NERtcCallback
onLeaveChannel(int result)	com.netease.lava.nertc.sdk.NERtcCallback
onUserAudioStart(long uid)	com.netease.lava.nertc.sdk.NERtcCallback
onUserAudioStop(long uid)	com.netease.lava.nertc.sdk.NERtcCallback
onUserJoined(long uid)	com.netease.lava.nertc.sdk.NERtcCallback
onUserJoined(long uid, NERtcUserJoinExtraInfo joinExtraInfo)	com.netease.lava.nertc.sdk.NERtcCallback
onUserLeave(long uid, int reason)	com.netease.lava.nertc.sdk.NERtcCallback
onUserLeave(long uid, int reason, NERtcUserLeaveExtraInfo leaveExtraInfo)	com.netease.lava.nertc.sdk.NERtcCallback
onUserVideoStart(long uid, int maxProfile)	com.netease.lava.nertc.sdk.NERtcCallback
onUserVideoStop(long uid)	com.netease.lava.nertc.sdk.NERtcCallback