Ios XMPPUserCoreDataStorageObject对象始终为零
我正在使用下面的代码获取未读邮件计数。但是,Ios XMPPUserCoreDataStorageObject对象始终为零,ios,objective-c,xmppframework,Ios,Objective C,Xmppframework,我正在使用下面的代码获取未读邮件计数。但是,XMPPUserCoreDataStorageObject*user总是nil。聊天功能工作正常,但我无法获取未读邮件数 XMPPUserCoreDataStorageObject *user = [self.xmppRosterStorage userForJID:[XMPPJID jidWithString:[NSString stringWithFormat:@"%@", [[[message fromStr] componentsSeparat
XMPPUserCoreDataStorageObject*user
总是nil
。聊天功能工作正常,但我无法获取未读邮件数
XMPPUserCoreDataStorageObject *user = [self.xmppRosterStorage userForJID:[XMPPJID jidWithString:[NSString stringWithFormat:@"%@", [[[message fromStr] componentsSeparatedByString:@"/"]objectAtIndex:0] ]]
xmppStream:self.xmppStream
managedObjectContext:[self managedObjectContext_roster]];
NSNumber *number = user.unreadMessages;
int value = [number intValue];
number = [NSNumber numberWithInt:value + 1];
user.unreadMessages = number;
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