Push View Controller, Black Screen

Question

I\'m pushing to a new view controller and passing some data to it. When I run the application I can press the button and push to a new view but the screen is completely blac

Answer 1

Typically, you transition to another view controller by calling:

initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil

on your custom UIViewController.

If you're not using a xib file, then what you're doing may be fine. Are you dynamically creating your UI elements within the constructor of your ImagesViewController?

Answer 2

I was trying without using storyboard, and its just that the default screen it uses is in black color. I changed the background color to white and it worked.

Pushed the controller this way-

NextController *nextController = [[NextController alloc]init]; [self.navigationController pushViewController:nextController animated:YES];

In NextController-

(void)viewDidLoad{
[self.view setBackgroundColor:[UIColor whiteColor]];

}

Answer 3

I got a good one:

Make sure you are implementing the right Super class, delegate, etc.. in the top part of the viewController you are trying to present. i.e.

I wasn't using/implementing UINavigationController at all

class TMDetailBlogViewController: UINavigationController {
  //code goes here
}

After

class TMDetailBlogViewController: UIViewController {
  //code goes here
}

Answer 4

When you're using a storyboard, and you want to push a view controller in code (rather than with a segue), you need to give the controller an identifier, and create it like this:

    ImagesViewController *ivc = [self.storyboard instantiateViewControllerWithIdentifier:@"MyIdentifier"];
    ivc.label = self.label.text;
    [self.navigationController pushViewController:ivc animated:YES];

Answer 5

Xcode 7.3 and Swift 2.2

In my case, I had made changes in the storyboard and made it a TabBarController and accordingly changed the class of the controller from UIViewController to UITabBarController. After some tweaking, this change wasn't favourable and I un did all the changes and got a black screen then because I had forgotten to change the class of the controller. I changed it back to UIViewController and it started working again.

So check if you have made the same mistake. The black screen came because the storyboard had a class(UIView/UITabBar/UITableView Controller) but that wasnt the same in code.

Answer 6

The view controller you are pushing is not having any frame dimension set.It is always recommended to call designated init for objects. For view controllers, designated init method is

- (id)initWithNibName:(NSString *)nibName bundle:(NSBundle *)nibBundle

if you have a xib assign it like

ImagesViewController *ivc = [[ImagesViewController alloc] initWithNibName:<your xib> bundle:[NSBundle mainbundle];

if you are using custom view, assign a frame dimension and add it as subview