ios - 使用未声明的类型 'NSEvent'

Question

我正在尝试创建鼠标按下事件，但在“override func mouseDown( theEvent: NSEvent!) { ”行中不断收到错误“使用未声明的类型‘NSEvent’”。在研究和尝试不同的东西之后，我仍然一无所获。以前有人遇到过这个问题吗？

import UIKit
import SpriteKit


let BallCategoryName = "ball"
let MainBallCategoryName = "mainBall"

class GameScene: SKScene {
    override func didMoveToView(view: SKView) {
        super.didMoveToView(view)

        // 1. Create a physics body that borders the screen
        let borderBody = SKPhysicsBody(edgeLoopFromRect: self.frame)
        // 2. Set the friction of that physicsBody to 0
        borderBody.friction = 0
        // 3. Set physicsBody of scene to borderBody
        self.physicsBody = borderBody

        physicsWorld.gravity = CGVectorMake(0, 0)

        let ball = childNodeWithName(BallCategoryName) as SKSpriteNode
        var mainBall = childNodeWithName(MainBallCategoryName) as SKSpriteNode

    ball.physicsBody!.applyImpulse(CGVectorMake(10, -10))

    ball.physicsBody!.allowsRotation = false
    ball.physicsBody!.friction = 0
    ball.physicsBody!.restitution = 1
    ball.physicsBody!.linearDamping = 0
    ball.physicsBody!.angularDamping = 0

}

override func mouseDown( theEvent: NSEvent!) {
    let action = SKAction.moveTo(
        CGPoint(x:theEvent.locationInWindow.x,y:theEvent.locationInWindow.y),
        duration:2
    );
    MainBallCategoryName.runAction(action)

 }
}

Answer 1

iOS 设备没有鼠标，iOS 也没有 NSEvent 类。它有一个 UIEvent 类，但在 iOS 上名为 mouseDown 的函数并没有什么特别之处。 iOS 事件报告触摸，而不是鼠标按钮。

如果您从教程中复制此代码，则该教程适用于 OS X，而非 iOS。您应该找到 iOS 教程。