# collectResources

> Raised when the build pipeline collects resources to add to the Xcode asset catalog.

## Definition

* **Type:** Event
* **Namespace:** [UnityEditor.iOS](/engine/6000.7/script-reference/unityeditor/ios.md)
* **Assembly:** UnityEditor.Apple.Extensions.Common

```csharp
public static event BuildPipeline.ResourcesCollectorDelegate collectResources
```

### Remarks

Subscribe using an [BuildPipeline.ResourcesCollectorDelegate](/engine/6000.7/script-reference/unityeditor/ios/buildpipeline/resourcescollectordelegate.md) method. The build pipeline calls each subscribed method once per build. Resources can include plain files or device-variant sets. Use [Resource.AddOnDemandResourceTags](/engine/6000.7/script-reference/unityeditor/ios/resource/addondemandresourcetags.md) to mark resources for on-demand delivery. Resources without tags are included in the initial app bundle.