TIMBackgroundParam Class Reference Inherits from NSObject Declared in TIMComm.h Overview 切后台参数 c2cUnread C2C 未读计数 @property (nonatomic, assign) int c2cUnread Declared In TIMComm.h groupUnread 群未读计数 @property (nonatomic, assign) int groupUnread Declared In TIMComm.h