xcode - Swift:收到内存警告后崩溃

Question

我收到内存警告，加载应用程序几分钟后崩溃(来自调试器的消息:由于内存问题而终止)

我在互联网上阅读了一些答案，我认为这可能会发生，因为我将 Sprite 动画存储在字典数组中，如下所示:

class CharacterCreate {

    var player = SKSpriteNode()
    var playerAtlas = SKTextureAtlas()
    var playerAnimation = [String : [SKTexture]]()
    let playerAnimationTypes = ["run", "static", "jump", "armed_static", "armed_run", "armed_jump"] // Player's animations
    var playerAnimationsArray = [String]() // Array with all player Sprites
    let playerAnimationSpritesPrefix = "Player_"
    let runAnimationTime = 0.1
    init(initPosition: CGPoint) {

        playerAtlas = SKTextureAtlas(named: "Player_anim")

        for i in 0 ..< playerAtlas.textureNames.count {
            playerAnimationsArray.append(playerAtlas.textureNames[i]) // Gets all the animations image names
        }

        for i in 0 ..< playerAnimationTypes.count {

            let animations = playerAnimationsArray.filter{$0.hasPrefix(playerAnimationSpritesPrefix + playerAnimationTypes[i])}.sort() // Gets all image names for a specific type of animation (eg: Player_run0.png, Player_run1.png, etc)

            for j in 0 ..< animations.count {

                if playerAnimation[playerAnimationTypes[i]] == nil {
                    playerAnimation[playerAnimationTypes[i]] = [] // Creates array if doesn't exist
                }

                playerAnimation[playerAnimationTypes[i]]!.append(SKTexture(imageNamed: animations[j])) // Add texture to make the animation

            }

        }

我不知道问题的发生是因为我存储动画的方式还是因为其他原因，但它总是在打开应用程序后 15 分钟内发生。如果你们需要任何其他信息，我很乐意提供

@edit:我也不知道问题是否因此而发生，但我在更新函数中有一些值不断变化，并且由于它在每一帧调用，我认为它也可能会使所使用的内存过载，我不知道

override func update(currentTime: CFTimeInterval) {
    /* Called before each frame is rendered */

    if (Player.playerOldY != Player.player.position.y && !Player.playerOnGround) {
        Player.playerOnAir = true
        if (Player.playerRunningJumpAnimation == false) {
            Player.playerRunningJumpAnimation = true
            spriteAnimation(Player.player, action: Player.playerAnimation["jump"]!, time: Player.runAnimationTime)
        }
    }

    Player.playerOldY = Player.player.position.y
    Player.playerOldX = Player.player.position.x

    if pressedButtons.indexOf(directionButtons["left"]!) != nil {
        Player.player.position.x -= Player.playerWalkingSpeed
        Player.playerDirection = (pressedButtons.count > 1 ? Player.playerDirection : -1)
        Player.player.xScale = Player.playerScale * Player.playerDirection
    }
    if pressedButtons.indexOf(directionButtons["right"]!) != nil {
        Player.player.position.x += Player.playerWalkingSpeed
        Player.playerDirection = (pressedButtons.count > 1 ? Player.playerDirection : 1)
        Player.player.xScale = Player.playerScale * Player.playerDirection
    }

}

@edit2:所以，我发现，如果我移除地面和玩家，内存就会停止增长。但是如果我只添加后面的一个，内存又开始不断增长

override func didMoveToView(view: SKView) {
    /* Setup your scene here */
    // Ground Create
    ground = SKSpriteNode(imageNamed: "grassSprite")
    ground.setScale(3)
    ground.position = CGPoint(x: self.frame.width / 2, y: 100 + ground.frame.height)

    // Ground Physics
    ground.physicsBody = SKPhysicsBody(rectangleOfSize: ground.size)
    ground.physicsBody?.categoryBitMask = PhysicsCategory.Ground
    ground.physicsBody?.collisionBitMask = PhysicsCategory.Player
    ground.physicsBody?.contactTestBitMask = PhysicsCategory.Player
    ground.physicsBody?.affectedByGravity = false
    ground.physicsBody?.dynamic = false
    ground.physicsBody?.restitution = 0
    self.addChild(ground)


    self.addChild(Player.player)

Answer 1

我做了很多调试，发现如果我去掉所有对象的物理特性，内存泄漏就会消失。所以看来问题出在游戏物理上，这很奇怪。

然后我做了很多研究，发现显示游戏物理需要大量内存。因此，我只需从 GameViewController 中删除 skView.showsPhysics = true 行，问题就解决了。