Xcode 9 GM 中的 ARSessionConfiguration 未解决 [英] ARSessionConfiguration unresolved in Xcode 9 GM

问题描述

我使用 Xcode 9 的测试版创建了一个 ARKit 项目，我能够在我的真实设备上毫无问题地运行该项目.
昨天，我升级到 Xcode 9 GM，没有碰任何东西，Xcode 显示多个错误，说它不知道 ARSessionConfiguration 即:

I have created an ARKit project using a beta version of Xcode 9, which I was able to run on my real device without issues.
Yesterday, I upgraded to Xcode 9 GM, and without touching anything, Xcode shows multiple errors, saying it does not know ARSessionConfiguration i.e.:

使用未声明的类型ARSessionConfiguration"

Use of undeclared type 'ARSessionConfiguration'

和:

使用未声明的类型ARWorldTrackingSessionConfiguration"

Use of undeclared type 'ARWorldTrackingSessionConfiguration'

...对于此代码:

let session = ARSession()
var sessionConfig: ARSessionConfiguration = ARWorldTrackingSessionConfiguration()

我已经导入了 ARKit 并在我的 ViewController 中使用了 ARSCNViewDelegate.
从 Xcode 测试版打开项目时，它没有显示错误，我可以再次在手机上运行该应用程序.

I have imported ARKit and am using the ARSCNViewDelegate in my ViewController.
When opening the project from the beta version of Xcode, it does not show the errors and I can again run the app on my phone.

知道如何解决这个问题吗?

Any idea how I can fix this?

推荐答案

ARWorldTrackingSessionConfiguration 已弃用并重命名为 ARWorldTrackingConfiguration:见这里

ARWorldTrackingSessionConfiguration has been deprecated and renamed to ARWorldTrackingConfiguration: See here

此外，ARSessionConfiguration 已被弃用并重命名为 ARConfiguration，它现在是一个抽象基类.

Also, ARSessionConfiguration has been deprecated and renamed to ARConfiguration, which is now an abstract base class.

当您不想要世界跟踪时，请使用 AROrientationTrackingConfiguration，而不是使用通用AR配置.因此:

Use AROrientationTrackingConfiguration when you don't want world tracking, instead of using a generic ARConfiguration. Thus:

let configuration = AROrientationTrackingConfiguration()

您还可以检查设备是否支持世界跟踪:

You can also check if world tracking is supported on a device:

if ARWorldTrackingConfiguration.isSupported {
   configuration = ARWorldTrackingConfiguration()
}
else  {
   configuration = AROrientationTrackingConfiguration()
} 

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