现在Mac地址不能用 只有获取uuID来作为唯一标识
NSString *identifierForVendor = [[UIDevice currentDevice].identifierForVendor UUIDString];
现在Mac地址不能用 只有获取uuID来作为唯一标识
NSString *identifierForVendor = [[UIDevice currentDevice].identifierForVendor UUIDString];