崩溃：
com.apple.scenekit.scnview-renderer（34）：EXC_BAD_ACCESS（代码= 1，地址= 0x68）
尝试删除按钮上的节点时，我总是遇到严重的访问崩溃。在某些情况下，为了重现撞车事故，必须重新生成并删除车辆2到3次。我利用removeFromParentNode函数，并将SCNNode的全局变量设置为nil。
已尝试在主服务器上调度队列。
尝试了异常和符号断点。
尝试跳入分配/僵尸工具，未发现明显的内存泄漏/释放。内存已正确释放。
尝试使用SCNTransaction隐藏UI。
添加节点功能：
@IBAction func addCarToSceneView(_ sender: UITapGestureRecognizer) {
if self.sharedCarNode == nil {
//if there is no car spawned, activate haptic feedback.
self.feedbackGenerator = UIImpactFeedbackGenerator()
self.feedbackGenerator?.impactOccurred()
//Get tap location
let tapLocation = sender.location(in: self.sceneView)
let hitTestResults = self.sceneView.hitTest(tapLocation, types: .existingPlane)
//Get first hit from tap location and grab where plane and node intersect
guard let firstHit = hitTestResults.first else {return}
let translation = firstHit.worldTransform.translation
let x = translation.x
let y = translation.y
let z = translation.z
//Initiate the scene from file
guard let carScene = SCNScene(named: "Avent.scn", inDirectory: "art.scnassets/Aventador", options: nil),
let carNode = carScene.rootNode.childNode(withName: "Car", recursively: true) else { return }
carNode.position = SCNVector3(x, y + 4, z - 10)
//Drop car animation to detected plane
let originalCarPosition = SCNVector3Make(x, y, z)
let dropCar = SCNAction.move(to: originalCarPosition, duration: 0.5)
carNode.runAction(dropCar)
self.positionForRotation = originalCarPosition
self.sceneView.scene.rootNode.addChildNode(carNode)
self.sharedCarNode = carNode
self.rotateButton.isEnabled = true
}
//Hide all Planes in view once a car is spawned
for plane in self.planes {
plane.isHidden = true
}
}
删除汽车功能：
@IBAction func deletePressed(_ sender: UIButton) {
self.sharedCarNode?.removeFromParentNode()
self.sharedCarNode = nil
for plane in self.planes {
plane.isHidden = false
}
self.scaleFactor.text = "Scale: 0%"
}
错误讯息：
Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState]
PID: 1685, TID: 396634, Thread name: com.apple.CoreMotion.MotionThread, Queue name: com.apple.root.default-qos.overcommit, QoS: 0
Backtrace:
4 libobjc.A.dylib 0x000000020f3cf6f4 <redacted> + 56
5 CoreMotion 0x0000000215b49d9c CoreMotion + 294300
6 CoreMotion 0x0000000215b4a2cc CoreMotion + 295628
7 CoreMotion 0x0000000215b4a1dc CoreMotion + 295388
8 CoreMotion 0x0000000215b7801c CoreMotion + 483356
9 CoreMotion 0x0000000215b78060 CoreMotion + 483424
10 CoreFoundation 0x000000021015e27c <redacted> + 28
11 CoreFoundation 0x000000021015db64 <redacted> + 276
12 CoreFoundation 0x0000000210158e58 <redacted> + 2276
13 CoreFoundation 0x0000000210158254 CFRunLoopRunSpecific + 452
14 CoreFoundation 0x0000000210158f88 CFRunLoopRun + 84
15 CoreMotion 0x0000000215b779f4 CoreMotion + 481780
16 libsystem_pthread.dylib 0x000000020fdd6908 <redacted> + 132
17 libsystem_pthread.dylib 0x000000020fdd6864 _pthread_start + 48
18 libsystem_pthread.dylib 0x000000020fddedcc thread_start + 4
2019-07-24 17:29:25.746570-0400 Portal[1685:396634] [reports] Main Thread Checker: UI API called on a background thread: -[UIApplication applicationState]
PID: 1685, TID: 396634, Thread name: com.apple.CoreMotion.MotionThread, Queue name: com.apple.root.default-qos.overcommit, QoS: 0
Backtrace:
4 libobjc.A.dylib 0x000000020f3cf6f4 <redacted> + 56
5 CoreMotion 0x0000000215b49d9c CoreMotion + 294300
6 CoreMotion 0x0000000215b4a2cc CoreMotion + 295628
7 CoreMotion 0x0000000215b4a1dc CoreMotion + 295388
8 CoreMotion 0x0000000215b7801c CoreMotion + 483356
9 CoreMotion 0x0000000215b78060 CoreMotion + 483424
10 CoreFoundation 0x000000021015e27c <redacted> + 28
11 CoreFoundation 0x000000021015db64 <redacted> + 276
12 CoreFoundation 0x0000000210158e58 <redacted> + 2276
13 CoreFoundation 0x0000000210158254 CFRunLoopRunSpecific + 452
14 CoreFoundation 0x0000000210158f88 CFRunLoopRun + 84
15 CoreMotion 0x0000000215b779f4 CoreMotion + 481780
16 libsystem_pthread.dylib 0x000000020fdd6908 <redacted> + 132
17 libsystem_pthread.dylib 0x000000020fdd6864 _pthread_start + 48
18 libsystem_pthread.dylib 0x000000020fddedcc thread_start + 4
2019-07-24 17:29:48.348816-0400 Portal[1685:396639] [Graphics] UIColor created with component values far outside the expected range. Set a breakpoint on UIColorBreakForOutOfRangeColorComponents to debug. This message will only be logged once.
最佳答案
在渲染器委托方法更新其他线程中的节点时，尝试在主线程（由SCNNodes发出）中隐藏/取消隐藏IBAction时遇到类似的问题。您的源代码未显示在时间/渲染器更新功能中如何更改节点。
例如：
@IBAction func toggleAnchorGrid(_ sender: UIBarButtonItem)
{
showGrid = !showGrid
for node in self.grids{
node.isHidden = self.showGrid ? false : true
}
//MARK: - SceneView renderer delegate methods...
func renderer(_ renderer: SCNSceneRenderer, didUpdate node: SCNNode, for anchor: ARAnchor) {
DispatchQueue.main.async {
if self.showGrid {
if let foundGrid = self.grids.filter({ $0.anchor.identifier == anchor.identifier }).first {
foundGrid.update(anchor: anchor as! ARPlaneAnchor)
}
}
}
......
关于ios - 场景套件渲染器上的错误访问崩溃，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/57191579/