ios - 无法更改SKView backgroundColor

Question

这是在iOS 9中。我无法设置SKView的背景颜色，它始终以默认的灰色呈现。有没有解决的办法？

let frame = CGRect(x: 0, y: 0, width: 200, height: 100)
let spriteView = SKView(frame: frame)
spriteView.backgroundColor = .blueColor()
self.view.addSubview(spriteView)

当上面的代码运行时，SKView是灰色而不是蓝色。我真正想要做的是设置 allowsTransparency = true，但是如果我无法将背景色更改为 clearColor，那么我将无法使用它。

还有其他人遇到吗？任何解决方法？

更新

即使有@Danilo的建议，它仍然显示为灰色:

let frame = CGRect(x: 0, y: 0, width: 200, height: 100)
let spriteView = SKView(frame: frame)
spriteView.backgroundColor = .clearColor()
spriteView.allowsTransparency = true
spriteView.opaque = false

更新

显然，设置SKView的 backgroundColor无效，但是如果您将其设置为任何值，则 allowsTransparency = true不起作用。

Answer 1

除了添加SKView外，我们还需要一个由SKScene表示的SKView;然后，我们调整/更改backgroundColor的SKScene。节点将依次由场景添加。

例如:

//create a SKView, which takes up the same frame as our view
let spriteView = SKView(frame: self.view.bounds)

//adding spriteView as a child view of our view
self.view.addSubview(spriteView)

//Here, we create a scene, which is the root object of
//the graph
let scene = SKScene(size: spriteView.frame.size)
scene.backgroundColor = .orangeColor()

//As said, we present the scene with our SKView
spriteView.presentScene(scene)

//Here, we create a node, which will be added by our scene
//This node takes up a size that you originally created and has the 
//background color set to blue
let nodeFrame = CGRect(x: 0, y: 0, width: 200, height: 100)
let node = SKSpriteNode(color: .blueColor(), size: nodeFrame.size)

//The following just serves to show how we can adjust the node's   
//position; I will leave that to you
node.position = CGPointMake(scene.frame.size.width - 200, scene.frame.size.height - 100)

//Finally, we add the node to our scene
scene.addChild(node)