ios - 以编程方式创建的 SKLabelNode 不可见 : SpriteKit

Question

这是使用 SpriteKit、Swift 3 后退按钮的代码

var backButton = SKLabelNode()
backButton.text = "Back"
backButton.name = "backbutton"
backButton.position = CGPoint(x: self.frame.minX + 40, y: self.frame.maxY - 40)
backButton.fontColor = SKColor.red
backButton.fontSize = 30
self.addChild(backButton)

Answer 1

可能您做错了一些事情，例如 zPosition、position 或您添加标签的位置(在什么方法中以及在什么父级中)。查看此示例以查看您的标签:

override func didMove(to view: SKView) {
     var backButton = SKLabelNode(fontNamed: "Arial")
     backButton.text = "Back"
     backButton.fontSize = 30
     backButton.name = "backbutton"
     backButton.fontColor = SKColor.red
     self.addChild(backButton) // self is GameScene (an SKScene)
     backButton.zPosition = 1
     backButton.position = CGPoint(x: self.frame.midX, y: self.frame.midY)
}