Updating texture not working

问题

Not working update on this texture. The code is an abbreviated version and I need it so. I need to update the texture. How would I be able to do this in Swift in SpriteKit?

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)
    }
}

回答1:

What I do to update textures is:

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

let me know if that works.

来源：https://stackoverflow.com/questions/37903386/updating-texture-not-working