---
title: didReceiveMemoryWarningNotification
framework: uikit
role: symbol
role_heading: Type Property
path: uikit/uiapplication/didreceivememorywarningnotification
---

# didReceiveMemoryWarningNotification

A notification that posts when the app receives a warning from the operating system about low memory availability.

## Declaration

```swift
nonisolated class let didReceiveMemoryWarningNotification: NSNotification.Name
```

## Mentioned in

Responding to memory warnings

## Discussion

Discussion This notification does not contain a userInfo dictionary.

## See Also

### Responding to environment changes

- [applicationProtectedDataDidBecomeAvailable(_:)](uikit/uiapplicationdelegate/applicationprotecteddatadidbecomeavailable(_:).md)
- [applicationProtectedDataWillBecomeUnavailable(_:)](uikit/uiapplicationdelegate/applicationprotecteddatawillbecomeunavailable(_:).md)
- [applicationDidReceiveMemoryWarning(_:)](uikit/uiapplicationdelegate/applicationdidreceivememorywarning(_:).md)
- [applicationSignificantTimeChange(_:)](uikit/uiapplicationdelegate/applicationsignificanttimechange(_:).md)
- [protectedDataDidBecomeAvailableNotification](uikit/uiapplication/protecteddatadidbecomeavailablenotification.md)
- [protectedDataWillBecomeUnavailableNotification](uikit/uiapplication/protecteddatawillbecomeunavailablenotification.md)
- [significantTimeChangeNotification](uikit/uiapplication/significanttimechangenotification.md)