我需要响应在物理键盘上按下的键,但是方法 pressesBegan
没有在任何类上被调用。我试过将它放在我的 SKScene 和我的 ViewController 中,但它就是没有被识别
UPDATE 这是代码,我用 fatalError()
替换了逻辑,这样当 pressesBegan
得到时这本书就会崩溃叫。因为它没有崩溃,所以 pressesBegan
没有被调用
其余代码与响应者无关
import Foundation
import SpriteKit
import SceneKit
import UIKit
public class GameScene: SKScene {
// ... some code
public override func pressesBegan(_ presses: Set<UIPress>, with event: UIPressesEvent?) {
fatalError()
}
/// Some more code...
}
class GameViewController: UIViewController {
override func loadView(){
self.view = sceneView
}
let sceneView = SKView(frame: CGRect(x:0 , y:0, width: 1920, height: 1080))
override func viewDidLoad() {
if let scene = GameScene(fileNamed: "GameScene") {
// Set the scale mode to scale to fit the window
scene.scaleMode = .aspectFill
// Present the scene
sceneView.presentScene(scene)
}
}
public override func pressesBegan(_ presses: Set<UIPress>, with event: UIPressesEvent?) {
fatalError()
}
}
let viewController = GameViewController()
viewController.view.becomeFirstResponder()
PlaygroundPage.current.liveView = viewController
PlaygroundPage.current.needsIndefiniteExecution = true
最佳答案
通过向 UIViewController
添加 override var canBecomeFirstResponder { true }
解决,在呈现 Controller 并调用 后调用
当我不处理媒体时myViewController.becomeFirstResponder()
code>super.pressesBegan
关于swift - pressesBegan 未在 Playground Book 中调用,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/67128452/