ios - SpriteKit，Swift - ScrollView 未显示

Question

好吧，我用这个方法实现了一个 ScrollView :

How to create a vertical scrolling menu in spritekit?

现在，当我启动场景时，除了黑色/灰色背景之外，它不会显示任何内容

这是我在菜单场景中使用的代码:

import Foundation
import SpriteKit
import UIKit

//let kMargin: CGFloat = 40

//var backButton = SKSpriteNode()
//var selectButton = SKSpriteNode()
var moveableNode = SKNode()
var scrollView: CustomScrollView!
private var imageSize = CGSize.zero

var sprite = SKSpriteNode()

class Menu: SKScene {

func didMoveToView() {

    addChild(moveableNode)

    scrollView = CustomScrollView(frame: CGRect(x: 0, y: 0, width: self.frame.size.width, height: self.frame.size.height), scene: self, moveableNode: moveableNode)
    scrollView.contentSize = CGSizeMake(self.frame.size.width, self.frame.size.height * 2)
    view!.addSubview(scrollView)

    sprite =  SKSpriteNode(color: SKColor.redColor(), size: CGSize(width: 50, height: 44))
    sprite.position.y = CGRectGetMidY(self.frame) + self.frame.size.height
    moveableNode.addChild(sprite)

  }

}

这可能很明显，但我似乎看不到。

Answer 1

尝试这个 Sprite ，我在另一个问题中犯了一个错误，它应该是 - self.frame.size.height，而不是+。

 sprite = SKSpriteNode(color: SKColor.redColor(), size: CGSize(width: 50, height: 44))
 sprite.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame) - self.frame.size.height)
 moveableNode.addChild(sprite)

检查我的 gitHub 项目

https://github.com/crashoverride777/Swift-2-SpriteKit-UIScrollView-Helper