如何知道用户在iOS的quickblox中在线还是离线？

Question

I am storing user contact in arrContactList

NSArray *arrContactList =  [QBChat instance].contactList.contacts;

From arrContactList, how the presence status can be derived.

Also after getting presence status, if user goes online or offline, how it can be found.

Answer 1

// contact has userId and presence status

for(QBContactListItem *contact in arrContactList) {

    BOOL isOnline = contact.isOnline;
    NSInteger userIdValue = contact.userID;

    if(isOnline) {
        NSLog(@"User %ld is online",(long)userIdValue);
    }
    else {
        NSLog(@"User %ld is offline",(long)userIdValue);
    }
}

// When a contact user goes online or offline, this method gets called

- (void)chatDidReceiveContactItemActivity:(NSUInteger)userID isOnline:(BOOL)isOnline status:(NSString *)status{

    // here you can check presence status using isOnline and also we get userID
    // so list of user IDs who are online can be maintained in an array
}