18 lines
524 B
Markdown
18 lines
524 B
Markdown
---
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uid: arkit-upgrade-guide
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---
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# Upgrading to ARKit XR Plug-in version 4.2
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To upgrade to ARKit XR Plug-in package version 4.2, you need to do the following:
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- Remove uses of `NSError.isNull`.
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- Use Unity 2020.3 or newer.
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**Remove uses of `NSError.isNull`**
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[NSError.isNull](xref:UnityEngine.XR.ARKit.NSError.isNull) has been deprecated. To determine whether an `NSError` is null, compare it to `null` using the `==` operator.
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**Use Unity 2020.3 or newer**
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This version of the package requires Unity 2020.3 or newer.
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