How to present UIAlertController from SKScene

Question

I\'m working in Spritekit and I\'m trying to present a UIAlertController from my SKScene, but I am having trouble doing it. I\'ve watched several tutorials but none of the UIAle

Answer 1

SKScene shouldn't be the one presenting the UIAlertController, but rather a UIViewController such as your initial GameViewController. Above code works fine when called from a UIViewController.

You could use NSNotificationCenter to help you call your view controller.

Add this to your view controller's viewDidLoad method,

[[NSNotificationCenter defaultCenter] addObserver:self                                          
                                         selector:@selector(playerLost:) 
                                             name:@"PlayerLostNotification" 
                                           object:nil];   

and you will need to define this method too.

- (void)playerLost:(NSNotification*) notification {
   UIAlertController *alert = [UIAlertController alertControllerWithTitle:@"You Lose!" 
                                         message:@"Do You Want To Beat This Level?" 
                                  preferredStyle:UIAlertControllerStyleAlert];

   UIAlertAction* cancel = [UIAlertAction actionWithTitle:@"GiveUp"
                         style:UIAlertActionStyleDefault
                       handler:^(UIAlertAction * action) {
                          [alert dismissViewControllerAnimated:YES completion:nil];
                       }];
   [alert addAction:cancel];
   [self presentViewController:alert animated:YES completion:nil];
}                             

In your SKScene when the player loses,

[[NSNotificationCenter defaultCenter] postNotificationName:@"PlayerLostNotification" object:self];