SKView does not display? - objective-c

Question

The compiler does not give any errors but the the appeared screen is somewhat empty, even the following line of code does not affect it:
self.backgroundColor = [SKColor colorWithRed:0.0 green:0.0 blue:0.5 alpha:0.0];
I have tried to compare my code to other template codes of the view controller and scene files and did not succeed finding whats wrong. I am using Xcode 6. Below is the code:1)scene file
#import "GameScene.h"
#import "Ball.h"
#import "WorldGenerator.h"
// 1
#interface GameScene ()
#property BOOL isStarted;
#end
#implementation GameScene
{
Ball *ball;
SKNode *world;
WorldGenerator *generator;
}
-(id)initWithSize:(CGSize)size {
if (self = [super initWithSize:size]) {
//setup your scene here
self.anchorPoint = CGPointMake(0.5, 0.5);
self.backgroundColor = [SKColor colorWithRed:0.0 green:0.0 blue:0.5 alpha:0.0];
//World
world = [SKNode node];
[self addChild:world];
generator = [WorldGenerator generatorWithWorld:world];
[self addChild:generator];
[generator populate];
// Ball allocation
ball = [Ball ball];
[self addChild:ball];
}
return self;
}
2) View controller file
#import "GameViewController.h"
#import "GameScene.h"
#implementation GameViewController
- (void)viewDidLoad
{
[super viewDidLoad];
// Configure the view.
SKView * skView = (SKView *)self.view;
skView.showsFPS = YES;
skView.showsNodeCount = YES;
// Create and configure the scene.
SKScene * scene = [SKScene sceneWithSize:skView.bounds.size];
scene.scaleMode = SKSceneScaleModeAspectFill;
// Present the scene.
[skView presentScene:scene];
}
- (BOOL)shouldAutorotate{
return YES;
}
- (NSUInteger)supportedInterfaceOrientations
{
if ([[UIDevice currentDevice] userInterfaceIdiom] == UIUserInterfaceIdiomPhone) {
return UIInterfaceOrientationMaskAllButUpsideDown;
} else {
return UIInterfaceOrientationMaskAll;
}
}
- (void)didReceiveMemoryWarning
{
[super didReceiveMemoryWarning];
// Release any cached data, images, etc that aren't in use.
}
- (BOOL)prefersStatusBarHidden {
return YES;
}
#end

Answer 1

I think this line could be the issue.
SKScene * scene = [SKScene sceneWithSize:skView.bounds.size];
and should be
GameScene * scene = [GameScene sceneWithSize:skView.bounds.size];
You weren't creating an instance of GameScene just an empty SKScene.
I hope that helps.