当我在initWithSize：（CGSize）大小初始化时，Sprite Kit SKLabel没有出现

Question

我阅读了其他帖子，并将视图控制器viewdidload更改为：

(void)viewWillLayoutSubviews
{
    [super viewWillLayoutSubviews];
}

我真的不确定问题是什么。这是我的代码：

(id)initWithSize:(CGSize)size {
    if (self = [super initWithSize:size]) {

      world=SKNode.node;
      [self addChild:world];

      self.anchorPoint= CGPointMake(0.5, 0.5);
      SKSpriteNode *ground = [SKSpriteNode spriteNodeWithColor:[UIColor yellowColor] size: CGSizeMake(self.frame.size.width, 150)];
      ground.position= CGPointMake(0, -self.frame.size.height/2+ ground.frame.size.width/2);
      ground.physicsBody= [SKPhysicsBody bodyWithRectangleOfSize:ground.size];
      ground.physicsBody.dynamic=NO;

      NSLog(@"ground position: %f" ,  -self.frame.size.height/2+ ground.frame.size.width/2);

      [world addChild:ground];

      generator = [WorldGenerator generatorWithWorld:world];

      [self addChild:generator];
      [generator populate];

      hero = [MLHero hero];
      [world addChild:hero];
      pointsLabel =[SKLabelNode labelNodeWithFontNamed:@"ChalkDuster"];
      if (pointsLabel)
        NSLog(@"true");
      pointsLabel.fontColor=[SKColor redColor];
      pointsLabel.fontSize=40;
      pointsLabel.text=@"0";
      pointsLabel.position= CGPointMake(200,200); //I have tried many different values and none seem to work, including setting to the width and height etc.

      [self addChild:pointsLabel];
   }
   return self;
}