I finished the "Relating Users in Parse.com" section of this project. I see the result that Ben displays in the app at the end of the last video. As I check and uncheck table view cells, the data browser in the backend updates accordingly.

But, when I navigate back to the Friends View Controller, my selections or deselections do not change anything locally on the app. This means that a new user, even after selecting friends, essentially remains with an empty Friends Table View.

The following are my implementations for didSelectRowAtIndexPath and isFriend methods, as that is where I think the problem is. I update the self.friends mutable array property accordingly as well, so I don't quite know what's going wrong.

'''

• (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath *)indexPath { [self.tableView deselectRowAtIndexPath:indexPath animated:NO];

  UITableViewCell *cell = [tableView cellForRowAtIndexPath:indexPath];

  PFUser *user = self.allUsers[indexPath.row]; PFRelation *friendsRelation = [self.currentUser relationforKey:@"friendsRelation"];

  if ([self isFriend:user]) { cell.accessoryType = UITableViewCellAccessoryNone; for (PFUser *friend in self.friends) { if ([friend.objectId isEqualToString:user.objectId]) { [self.friends removeObject:friend]; break; } } [friendsRelation removeObject:user]; } else { cell.accessoryType = UITableViewCellAccessoryCheckmark; [self.friends addObject:user]; [friendsRelation addObject:user]; } [self.currentUser saveInBackgroundWithBlock: ^(BOOL succeeded, NSError *error) { if (error) { NSLog(@"Error %@ %@", error, error.userInfo); } }]; }

  pragma mark - Helper Methods

  • (BOOL)isFriend:(PFUser *)user { for (PFUser *friend in self.friends) { if ([friend.objectId isEqualToString:user.objectId]) { return YES; } } return NO; } '''

Thanks for the help in advance