Why isn't my SpriteNode being added to the Scene? - ios

Question

I am making a SpriteNode and trying to add it to the scene. It is not showing up even if I use the [self addChild: child]. I just can't see where I went wrong. Here is my View Controller.m:
- (void)viewDidLoad
{
[super viewDidLoad];
// Pause the view (and thus the game) when the app is interrupted or backgrounded
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(handleApplicationWillResignActive:) name:UIApplicationWillResignActiveNotification object:nil];
[[NSNotificationCenter defaultCenter] addObserver:self selector:#selector(handleApplicationDidBecomeActive:) name:UIApplicationDidBecomeActiveNotification object:nil];
// Configure the view.
SKView * skView = (SKView *)self.view;
skView.showsFPS = YES;
skView.showsNodeCount = YES;
// Create and configure the scene.
SKScene * scene = [TitleScene sceneWithSize:skView.bounds.size];
scene.scaleMode = SKSceneScaleModeAspectFill;
// Present the scene.
[skView presentScene:scene];
}
And here is my Scene.m
- (void)viewWillAppear:(BOOL)animated
{
SKView * skView = (SKView *)self.view;
skView.showsFPS = YES;
skView.showsNodeCount = YES;
SKTexture *YellowLabelTexture = [SKTexture textureWithImageNamed:#"YellowLabel.png"];
SKTexture *BlueLabelTexture = [SKTexture textureWithImageNamed:#"BlueLabel.png"];
SKTexture *GreenLabelTexture = [SKTexture textureWithImageNamed:#"GreenLabel.png"];
SKTexture *RedLabelTexture = [SKTexture textureWithImageNamed:#"RedLabel.png"];
SKTexture *WhiteLabelTexture = [SKTexture textureWithImageNamed:#"WhiteLabel.png"];
NSArray *anim = [NSArray arrayWithObjects:YellowLabelTexture, BlueLabelTexture, GreenLabelTexture, RedLabelTexture, WhiteLabelTexture, nil];
SKSpriteNode *labelNode = [SKSpriteNode spriteNodeWithImageNamed:#"WhiteLabel.png"];
labelNode.position = CGPointMake(160, 400);
SKAction *actionAnimate = [SKAction animateWithTextures:anim timePerFrame:.5 resize:YES restore:NO];
SKAction *actionRepeat = [SKAction repeatActionForever:actionAnimate];
[self runAction:actionRepeat];
[self addChild:labelNode];
}
Can someone figure out what is causing the sprite to NOT be added to the scene. Also, How can I add it to the scene? Thanks!

Answer 1

As #akashg said you can't use viewWillAppear method, and also you should use runAction for labelNode:
[self runAction:actionRepeat]; to [labelNode runAction:actionRepeat];
here is how your code should look like:
-(id)initWithSize:(CGSize)size {
if (self = [super initWithSize:size]) {
/* Setup your scene here */
SKView * skView = (SKView *)self.view;
skView.showsFPS = YES;
skView.showsNodeCount = YES;
SKTexture *YellowLabelTexture = [SKTexture textureWithImageNamed:#"YellowLabel.png"];
SKTexture *BlueLabelTexture = [SKTexture textureWithImageNamed:#"BlueLabel.png"];
SKTexture *GreenLabelTexture = [SKTexture textureWithImageNamed:#"GreenLabel.png"];
SKTexture *RedLabelTexture = [SKTexture textureWithImageNamed:#"RedLabel.png"];
SKTexture *WhiteLabelTexture = [SKTexture textureWithImageNamed:#"WhiteLabel.png"];
NSArray *anim = [NSArray arrayWithObjects:YellowLabelTexture, BlueLabelTexture, GreenLabelTexture, RedLabelTexture, WhiteLabelTexture, nil];
SKSpriteNode *labelNode = [SKSpriteNode spriteNodeWithImageNamed:#"WhiteLabel.png"];
labelNode.position = CGPointMake(160, 400);
SKAction *actionAnimate = [SKAction animateWithTextures:anim timePerFrame:.5 resize:YES restore:NO];
SKAction *actionRepeat = [SKAction repeatActionForever:actionAnimate];
[labelNode runAction:actionRepeat];
[self addChild:labelNode];
}
return self;
}
#end