ios - 简单创建 SCNNode 时 NSSecureCoding 抛出异常

Question

我正在尝试从 .scn(最初是我转换为 .scn 的 DAE 文件)创建一个 SCNNode，当我这样做时，控制台会生成以下内容:

[general] NSSecureCoding allowed classes list contains [NSObject class],
which bypasses security by allowing any Objective-C class to be implicitly
decoded. Consider reducing the scope of allowed classes during decoding by
listing only the classes you expect to decode, or a more specific base class
than NSObject.

这是导致抛出的代码:

if let usrScene = SCNScene(named: "Test.scnassets/Models/player.scn") {
    usr = usrScene.rootNode.childNode(withName: "root", recursively: true)!
}

场景图如下:root->player

我怎样才能移除 throw 物(或者应该)？用通俗的话来说是什么意思？

Answer 1

对于有同样问题的人:

我从来没有弄清楚抛出的含义，但我确实设法用以下代码摆脱了它:

extension SCNNode {
    convenience init?(daePath: String) {
        self.init()

        guard let scene = SCNScene(named: daePath) else {
            return
        }

        for childNode in scene.rootNode.childNodes {
            addChildNode(childNode)
        }
    }
}

然后像这样导入...

usr = SCNNode(daePath: "Test.scnassets/Models/player.dae")