先写一个GCD
static UserInfoVoModel *userInfoShare = nil; +(instancetype)shareUserInfoVoModel { static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ userInfoShare = [[UserInfoVoModel alloc] init]; }); return userInfoShare; }
miaomiaocat 2016-04-11 11:23 原文
先写一个GCD
static UserInfoVoModel *userInfoShare = nil; +(instancetype)shareUserInfoVoModel { static dispatch_once_t onceToken; dispatch_once(&onceToken, ^{ userInfoShare = [[UserInfoVoModel alloc] init]; }); return userInfoShare; }