UIScreen.main.bounds 返回什么值?屏幕尺寸匹配时出现问题

Question

文档和其他指南向我建议 Swift 中的 UIScreen.main.bounds 返回屏幕边缘。然而，在 Swift 中使用模拟器并不像这样。

下面是来自XCode模拟器（5s，6）的两个屏幕截图，使用相同的代码。

苹果手机5s苹果手机6

代码在下面，但基本上只是用（屏幕宽度，屏幕高度），（-屏幕宽度，屏幕高度），（屏幕宽度，-屏幕高度

），（-屏幕宽度，-屏幕高度）绘制四条路径。

我是否误解了UIScreen.main.bounds？还是有其他原因造成的？理想情况下，我希望能够以编程方式设置找到屏幕四个角的变量。

这一切都是在GameScene中完成的。我在故事板上没有添加任何功能。

    let screenSize = UIScreen.main.bounds
    let screenWidth = screenSize.width
    let screenHeight = screenSize.height
    let pathBound = UIBezierPath(rect: CGRect(x: -screenWidth, y: -screenHeight, width: 5, height: screenHeight*2))
    let shapeNode = SKShapeNode(path: pathBound.cgPath)
    shapeNode.fillColor = UIColor.green
    shapeNode.strokeColor = UIColor.green
    addChild(shapeNode)
    let pathBound2 = UIBezierPath(rect: CGRect(x: screenWidth-5, y: -screenHeight, width: 5, height: screenHeight*2))
    let shapeNode2 = SKShapeNode(path: pathBound2.cgPath)
    shapeNode2.fillColor = UIColor.blue
    shapeNode2.strokeColor = UIColor.blue
    addChild(shapeNode2)
    let pathBound3 = UIBezierPath(rect: CGRect(x: -screenWidth, y: screenHeight-5, width: screenWidth*2, height: 5))
    let shapeNode3 = SKShapeNode(path: pathBound3.cgPath)
    shapeNode3.fillColor = UIColor.red
    shapeNode3.strokeColor = UIColor.red
    addChild(shapeNode3)
    let pathBound4 = UIBezierPath(rect: CGRect(x: -screenWidth, y: -screenHeight, width: screenWidth*2, height: 5))
    let shapeNode4 = SKShapeNode(path: pathBound4.cgPath)
    shapeNode4.fillColor = UIColor.orange
    shapeNode4.strokeColor = UIColor.orange
    addChild(shapeNode4)
    let pathBound5 = UIBezierPath(rect: CGRect(x: -screenWidth, y: 0
        , width: screenWidth*2, height: 5))
    let shapeNode5 = SKShapeNode(path: pathBound5.cgPath)
    shapeNode5.fillColor = UIColor.purple
    shapeNode5.strokeColor = UIColor.purple
    addChild(shapeNode5)

Answer 1

你对此有何看法-

var screenWidth = UIScreen.main.bounds.size.width

var screenHeight = UIScreen.main.bounds.size.height