Question

I have seen apps that will push to the new viewController immediately upon clicking the table item, then display an activityIndicator while the new view is loading. I know how to add the activityIndicator to the ProfileViewController, but how do I make the table push to the new controller immediately upon clicking the item rather than waiting for the content to load?

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath 
*)indexPath
{
  ProfileViewController *profileViewController = [[ProfileViewController alloc] initWithNibName:@"ProfileViewController" bundle:nil];

  //profileViewController.title = [[news objectAtIndex:indexPath.row] objectForKey:@"name"];
  profileViewController.newsArticle = [news objectAtIndex:indexPath.row];
  [self.navigationController pushViewController:profileViewController animated:YES];
}

Any assistance or guidance would be wonderful. Thank you all!

Answer 1

You don’t to an operation on the new view controller until the viewDidAppear. And then you fire off something that is asynchronous and does not block the main thread:

1. viewDidLoad: setup activity indicator
2. viewWillAppear: start acrivity indicator
3. viewDidAppear: fire off async process
4. Delegate method/notification/block: when process is done update UI with data