如何知道用戶在quickblox for iOS中是在線還是離線？

Question

我存儲用戶接觸在arrContactList

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

從arrContactList，存在狀態如何導出。

同樣在獲得狀態後，如果用戶上線或下線，如何找到它。

Answer 1

//聯繫人有帳戶及存在狀態

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); 
    } 
} 

//當接觸用戶上線或離線，該方法被調用

- (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 
}