objective-c - WeChat Umeng shared that this pit has appeared, please solve it! ! !

Question

NSLog(@"-------------------------------------------");
NSLog(@"username = %@, uid = %@, token = %@ url = %@",snsAccount.userName,snsAccount.usid,snsAccount.accessToken,snsAccount.iconURL);
NSLog(@"-------------------------------------------");
/// 打印结果：username = (null), uid = , token = (null) url = (null)