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moving from one UIViewController to another from sprite kit SKScene

create a new NSNotificationCenter inside your UIViewController class inside viewDidAppear function 


1).

-(void)viewDidAppear:(BOOL)animated
{
    [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(disMissViewController) name:@"disMissViewController"  object:nil];

}


2.)

create selector 


-(void)disMissViewController{
   

    //in case of story board

    UIStoryboard *storyboard = [UIStoryboard storyboardWithName:@"Main"   bundle:nil];
    mainView= [storyboard instantiateViewControllerWithIdentifier:@"main" ];

    //in case of code

     mainView=[[UIViewController alloc] init];
    [self presentViewController:newviewController animated:YES completion:^{
        
    }];


    //remove Notification
    [[NSNotificationCenter defaultCenter] removeObserver:self
                                                    name:@"disMissViewController"
                                                  object:nil];
}


3) calling NSNotificationCenter from your skscene 


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

thats it work done remember 


one thing skview maintain cache so removing Scene from view does not remove it all


such as

-(void)willMoveFromView:(SKView *)view
{
    
    
    [self removeAllChildren];
    [self removeAllActions];
    [self removeFromParent];
    [self.view presentScene:nil];
}



this would remove  Scene from view not skview from your viewController its skivew that maintain cache for high performance so you need to remove skview from viewController  add few lines to your code for that 
this would remove skview from your parent viewController

-(void)viewDidDisappear:(BOOL)animated {
    if( self.skView ) {
        NSLog(@"%s - removing skView",__PRETTY_FUNCTION__);
        [self.skView removeFromSuperview];
         self.skView = nil;
     
    }

}

for more information click the below link

https://developer.apple.com/library/ios/qa/qa1889/_index.html

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