Swift SKLabelNode相关EXC\u错误\u访问崩溃

我目前有一个崩溃，我找不到解决办法

在我正在开发的应用程序中，我有一个自定义类

LabelNode:SKNode

，它使用

SKLabelNode

和

SKSpriteNode

在黑色正方形背景上创建白色文本。使用下面的

setText（newText:String）

函数，此标签将为每一帧更新新值

class LabelNode: SKNode {

private let textNode: SKLabelNode
private let backgroundNode: SKSpriteNode
private let padding: CGFloat

var width: CGFloat = 0
var height: CGFloat = 0
var horizontalAlignment = SKLabelHorizontalAlignmentMode.center

init(fontSize: CGFloat, text: String? = "A") {
    textNode = SKLabelNode(fontNamed: "Arial")
    textNode.zPosition = 1
    backgroundNode = SKSpriteNode(color: UIColor.black, size: CGSize(width: 0, height: 0))
    textNode.fontColor = UIColor.white
    textNode.fontSize = fontSize
    textNode.text = text
    textNode.verticalAlignmentMode = SKLabelVerticalAlignmentMode.top
    height = textNode.frame.size.height
    textNode.position.y = (height / 2)
    padding = 0.165 * height
    width = textNode.frame.size.width
    backgroundNode.size = CGSize(width: width + padding, height: height + padding)
    backgroundNode.position.x = textNode.frame.midX
    super.init()
    addChild(textNode)
    addChild(backgroundNode)
}

required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented for LabelNode")
}

func setText(newText: String) {
    self.textNode.text = newText
    width = self.textNode.frame.size.width
    backgroundNode.size = CGSize(width: width + padding, height: height + padding)
    backgroundNode.position.x = textNode.frame.midX
}

func setFontColor(newFontColor: UIColor) {
    self.textNode.fontColor = newFontColor
}

func setAlignment(newAlignment: SKLabelHorizontalAlignmentMode) {
    self.textNode.horizontalAlignmentMode = newAlignment
}

}

我的应用程序一直以随机的时间间隔抛出EXC_BAD_访问，有时在不同的线程上抛出不同的错误消息。有时xcode指向该行

width = self.textNode.frame.size.width

但有时在线程x上的随机行上，但上面的行在线程y中处于活动状态

如果僵尸被激活，但是

所有异常

断点和

malloc\u error\u break

都被停用，我在崩溃时会得到以下终端输出

-[SKTexture dealloc]: message sent to deallocated instance 0x10bbaf70

其中

po 0x10bbaf70

仅给出输出

280735600

以及下面的堆栈跟踪

* thread #41: tid = 0x73287, 0x1d9ac4d0 CoreFoundation`___forwarding___ + 532, queue = 'com.apple.scenekit.renderingQueue.applicationName.GameView0x1478d2b0', stop reason = EXC_BREAKPOINT (code=EXC_ARM_BREAKPOINT, subcode=0xdefe)
frame #0: 0x1d9ac4d0 CoreFoundation`___forwarding___ + 532
frame #1: 0x1d8d13d8 CoreFoundation`_CF_forwarding_prep_0 + 24
frame #2: 0x1cc25194 libobjc.A.dylib`objc_object::sidetable_release(bool) + 238
frame #3: 0x2b23ff0a SpriteKit`SKCSpriteNode::~SKCSpriteNode() + 38
frame #4: 0x2b23ff28 SpriteKit`SKCSpriteNode::~SKCSpriteNode() + 8
frame #5: 0x2b2204a2 SpriteKit`SKCLabelNode::rebuildText() + 134
frame #6: 0x2b2201b2 SpriteKit`SKCLabelNode::getBoundingBox() + 34
frame #7: 0x2b27d248 SpriteKit`-[SKNode frame] + 40
frame #8: 0x2b297928 SpriteKit`-[SKLabelNode frame] + 40
* frame #9: 0x000aea54 applicationName`LabelNode.setText(newText="9 555 m", self=0x15863970) -> () + 288 at LabelNode.swift:45

如果我在

所有异常

断点和

malloc\u error\u break

激活的情况下运行，我不会得到任何终端输出和以下堆栈跟踪

* thread #21: tid = 0x7414f, 0x1cc24612 libobjc.A.dylib`objc_release + 2, queue = 'com.apple.scenekit.renderingQueue.applicationName.GameView0x177651b0', stop reason = EXC_BAD_ACCESS (code=1, address=0x2)
frame #0: 0x1cc24612 libobjc.A.dylib`objc_release + 2
frame #1: 0x2b23fefa SpriteKit`SKCSpriteNode::~SKCSpriteNode() + 22
frame #2: 0x2b23ff28 SpriteKit`SKCSpriteNode::~SKCSpriteNode() + 8
frame #3: 0x2b2204a2 SpriteKit`SKCLabelNode::rebuildText() + 134
frame #4: 0x2b2201b2 SpriteKit`SKCLabelNode::getBoundingBox() + 34
frame #5: 0x2b27d248 SpriteKit`-[SKNode frame] + 40
frame #6: 0x2b297928 SpriteKit`-[SKLabelNode frame] + 40
* frame #7: 0x00181a54 applicationName`LabelNode.setText(newText="4 033 m", self=0x17786cb0) -> () + 288 at LabelNode.swift:45

---

有没有人知道这次事故背后的原因，或者我可以采取什么进一步的措施来阐明这一点？任何提示都会非常有用：）

您还没有展示足够的代码来完全理解您的问题，从看起来您正在对labelNode进行子分类，并试图在标签后面放置Spritode？在我看来，这种情况要简单得多

    class LabelNode : SKSpriteNode {

init(texture: SKTexture?, color: UIColor, size: CGSize, text: String) {

    super.init(texture: texture, color: color, size: size)


    let label = SKLabelNode(fontNamed: "Courier-Bold")
    label.fontSize = 50
    label.fontColor = SKColor.black
    label.position = CGPoint.init(x: 0.0, y: 0.0)
    label.zPosition = 1
    label.verticalAlignmentMode = .center
    label.text = text
    self.addChild(label)

}

required init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
}

       }

创建自定义sprite节点类并直接在其上添加标签

然后将其添加到视图中

      let labelNode = LabelNode(texture: nil, color: .white, size: CGSize.init(width: 400, height: 100) , text: "Enter text")
    labelNode.position = CGPoint(x: self.frame.midX, y: self.frame.midY)

    self.addChild(labelNode)