self.navigationController pushViewController: animated: gives me a black screen

Question

I'm using Objective-C. I have this code in my .m file.

- (void)tableView:(UITableView *)tableView didSelectRowAtIndexPath:(NSIndexPath*)indexPath
{
    detailViewController *detail = [[detailViewController alloc]init];
    [self.navigationController pushViewController:detail animated:YES];
}

And I created my Detail View Controller Scene in storyboard. It looks like this [

And every time I run this in my simulator and tap on one of the tableview cell, it pushes the screen to a complete black screen like this:

Can someone help me? I would thank you very much!

Answer 1

Yes it will give a blank screen, because you haven't attached any visual interpretation on detailViewController class.

Use this method

UIStoryboard *sb = [UIStoryboard storyboardWithName:@"MainStoryboard" bundle:nil];
DetailViewController *vc = [sb instantiateViewControllerWithIdentifier:@"detailViewController"];
[self.navigationController pushViewController:vc animated:YES];

You will have to set storyboard id by clicking on view controller and set storyboard id as shown in picture

Note : for above pic replace Storyboard id "MessagingVC" with "detailViewController"

Answer 2

When using a storyboard, you don't want to use alloc+init to create the view controller. Instead, you need to assign a Storyboard ID in Interface Builder and then use:

[self.storyboard instantiateViewControllerWithIdentifier:my_identifier];

A better option may be to set a push segue on the table view controller. This will cause the instantiation and push to happen automatically. You can override prepareForSegue:sender: to set properties, if needed.