无法解析符号import SpriteKit
class GameScene: SKScene ,SKPhysicsContactDelegate {
let ballCategory:UInt32 = 0x1 << 0
let bottomCategory:UInt32 = 0x1 << 1
let paddleCategory:UInt32 = 0x1 << 2
override init(size: CGSize){
super.init(size: size)
physicsWorld.contactDelegate = self
let ball = SKSpriteNode(imageNamed: "ball")
ball.position = CGPointMake(CGRectGetMidX(self.frame), CGRectGetMidY(self.frame))
addChild(ball)
ball.physicsBody = SKPhysicsBody(circleOfRadius: self.frame.size.width / 2)
ball.physicsBody?.dynamic = true
ball.physicsBody?.allowsRotation = false
ball.physicsBody?.friction = 0
// ball.physicsBody?.applyImpulse(CGVectorMake(2,-2))
ball.physicsBody?.categoryBitMask = ballCategory
ball.physicsBody?.contactTestBitMask = paddleCategory
ball.physicsBody?.collisionBitMask = paddleCategory
ball.physicsBody?.affectedByGravity = true
let paddle = SKSpriteNode(imageNamed: "paddle")
paddle.position = CGPointMake(CGRectGetMidX(self.frame), paddle.frame.size.height * 2)
addChild(paddle)
paddle.physicsBody = SKPhysicsBody(rectangleOfSize: paddle.frame.size)
paddle.physicsBody?.affectedByGravity = false
paddle.physicsBody?.dynamic = false
paddle.physicsBody?.categoryBitMask = paddleCategory
}
required init?(coder aDecoder: NSCoder) {
fatalError("init(coder:) has not been implemented")
}
override func touchesBegan(touches: Set<UITouch>, withEvent event: UIEvent?) {
}
func didBeginContact(contact: SKPhysicsContact) {
print("touched")
}
override func update(currentTime: CFTimeInterval) {
/* Called before each frame is rendered */
}
}
，findViewById()以及更多基本功能，也许我对资源文件做错了，但我现在不知道该怎么做才能纠正。
getApplicationContext()答案 0 :(得分：1)
应用程序没有成功构建，因为@vasilis提到尝试清理和重建项目。如果不能解决问题，请重新启动工作室，最糟糕的情况下重新启动系统。
答案 1 :(得分：1)
您似乎遇到了Android Studio中的损坏缓存错误。
修复：文件＆gt;使高速缓存/重新启动无效
答案 2 :(得分：0)
虽然不是很有效但我找到了方法，但我顺便说一句。我将整个项目复制到另一个位置并从那里打开。 MAGIC它对我有用。