ok log the user id you got from the segue in viewDidLoad of your profile viewController. also log the user returned from the query so we can see if you are actually getting anything from the backend

- (void)viewDidLoad
{
    [super viewDidLoad];

            //does this log a user id or null?
            NSLog(@"user id: %@", self.userId);
            PFUser *selectedUser = [PFQuery getUserObjectWithId:self.userId];
           //does this log a user object or null?
            NSLog(@"user object: %@", selectedUser);
            NSLog(@"username: %@" , selectedUser.username);
            self.userNameLabel.text = selectedUser.username; // Shows nothing
            self.emailLabel.text = selectedUser.email; //Shows nothing

}

also log the selectedUser id object in your prepareForSEgue method to amke sure it has a value when you pass it to the profile controller:

-(void)prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender{

    if ([segue.identifier isEqualToString:@"showProfileView"]) {
        ProfileViewController *vc = (ProfileViewController *)segue.destinationViewController;
        //what does this log?
        NSLog(@"self.selectedUserId in prepareForSegue: %@", self.selectedUserId);
        vc.userId = self.selectedUserId; // could set this in didSelectRowAtIndexPath
    }
}

It works ! Thank you so much ! :)

I seem to be having the same issue. I just cannot pass this value to my profileViewController no matter what i try. Which is odd because I've got several checks to see if the self.selectedUserId is being set and it recalls the correct Id in the FriendsVC, however it logs null in the profileVC every time.

here is my FriendsVC.m

import "FriendsViewController.h"

import "EditFriendsTableViewController.h"

@interface FriendsViewController ()

@end

@implementation FriendsViewController

• (void)viewDidLoad { [super viewDidLoad];

  self.friendsRelation = [[PFUser currentUser] objectForKey:@"friendsRelation"]; }

• (void) viewWillAppear:(BOOL)animated { [super viewWillAppear:animated];

  PFQuery *query = [self.friendsRelation query]; [query orderByAscending:@"username"]; [query findObjectsInBackgroundWithBlock:^(NSArray *objects, NSError *error) { if(error) { NSLog(@"Error: %@ %@", error, [error userInfo]); } else { self.friends = objects; [self.tableView reloadData]; } }]; }

• (NSInteger)numberOfSectionsInTableView:(UITableView *)tableView { return 1; }

• (NSInteger)tableView:(UITableView *)tableView numberOfRowsInSection:(NSInteger)section { return [self.friends count]; }

• (UITableViewCell *)tableView:(UITableView *)tableView cellForRowAtIndexPath:(NSIndexPath *)indexPath { UITableViewCell *cell = [tableView dequeueReusableCellWithIdentifier:@"Cell" forIndexPath:indexPath];

  PFUser *user = [self.friends objectAtIndex:indexPath.row]; cell.textLabel.text = user.username;

  return cell; }

• (void) tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [self.tableView deselectRowAtIndexPath:indexPath animated:NO]; PFUser *user = [self.friends objectAtIndex:indexPath.row]; self.selectedUserId = user.objectId;

  NSLog(@" selected id - didSelect: %@", self.selectedUserId);

  [self performSegueWithIdentifier:@"showProfile" sender:self]; }

• (void) prepareForSegue:(UIStoryboardSegue *)segue sender:(id)sender { /*NSIndexPath *indexPath = [self.tableView indexPathForSelectedRow]; PFUser *user = [self.friends objectAtIndex:indexPath.row]; self.selectedUserId = user.objectId;

  NSLog(@" selected id - prepare: %@", self.selectedUserId); */

  if([segue.identifier isEqualToString:@"showEditFriends"]) { EditFriendsTableViewController *viewController = (EditFriendsTableViewController *)segue.destinationViewController;

  viewController.friends = [NSMutableArray arrayWithArray:self.friends];
  

  } else if ([segue.identifier isEqualToString:@"<showProfile>"]) { ProfileViewController *profileView = (ProfileViewController *)segue.destinationViewController; profileView.userId = self.selectedUserId; NSLog(@"self.selectedUserId in prepareForSegue: %@", self.selectedUserId); NSLog(@"Selected user in prepareForSegue: %@", profileView.userId); } }

@end

Here is my ProfileVC.m file

import "ProfileViewController.h"

import "FriendsViewController.h"

import <Parse/Parse.h>

@interface ProfileViewController ()

@end

@implementation ProfileViewController

• (void)viewDidLoad { [super viewDidLoad];

  //does this log a user id or null? NSLog(@"user id: %@", self.userId);

}

• (void) viewWillAppear:(BOOL)animated { [super viewWillAppear:animated]; }

@end