更新纹理不起作用

Question

不对此纹理进行更新。代码是缩写版本，我需要它。我需要更新纹理。我怎么能在SpriteKit中的Swift中做到这一点？

func didBeginContact(contact: SKPhysicsContact) {        
    if firstBody.categoryBitMask == PhysicsCatagory.ball && secondBody.categoryBitMask == PhysicsCatagory.coin
    {
        vyhodnoceni()
        screen(2)

    }}

override func update(currentTime: NSTimeInterval) {
    vysledekHvezdyTexture = SKTexture(imageNamed: starString1!)}

func vyhodnoceni(){
starString1 = "hvezdy1"}

func screen(number: Int){
    if number == 2 {
        vysledekHvezdy = SKSpriteNode(texture: vysledekHvezdyTexture)
        vysledekHvezdy.size = CGSize(width: screenSize.width / 2, height: screenSize.height / 10.5)
        vysledekHvezdy.position = CGPoint(x: self.frame.width / 2, y: self.frame.height / 2.3)
        vysledekHvezdy.zPosition = 11
        vysledekHvezdy.alpha = 0.0
        vysledekHvezdy.runAction(SKAction.fadeInWithDuration(0.7))
        self.addChild(vysledekHvezdy)
    }
}

Answer 1

我更新纹理的方法是：

let changeTexture = SKAction.animateWithTextures([page1], timePerFrame: 0.1)
bg.runAction(changeTexture)

如果有效，请告诉我。