---
title: UIApplication.SystemPrefersReducedResourceUsageDidChangeMessage
framework: uikit
role: symbol
role_heading: Structure
platforms: [iOS 27.0+, iPadOS 27.0+, Mac Catalyst 27.0+, tvOS 27.0+, visionOS 27.0+]
path: uikit/uiapplication/systemprefersreducedresourceusagedidchangemessage
---

# UIApplication.SystemPrefersReducedResourceUsageDidChangeMessage

## Declaration

```swift
struct SystemPrefersReducedResourceUsageDidChangeMessage
```

## Topics

### Initializers

- [init()](uikit/uiapplication/systemprefersreducedresourceusagedidchangemessage/init().md)

## Relationships

### Conforms To

- [NotificationCenter.MainActorMessage](foundation/notificationcenter/mainactormessage.md)
- [SendableMetatype](swift/sendablemetatype.md)