<!--
{
  "availability" : [
    "iOS: 15.0.0 -",
    "iPadOS: 15.0.0 -",
    "macCatalyst: 15.0.0 -",
    "macOS: 10.15.0 -",
    "tvOS: 15.0.0 -",
    "visionOS: 1.0.0 -",
    "watchOS: 8.0.0 -"
  ],
  "documentType" : "symbol",
  "framework" : "OSLog",
  "identifier" : "/documentation/OSLog/OSLogEntryActivity",
  "metadataVersion" : "0.1.0",
  "role" : "Class",
  "symbol" : {
    "kind" : "Class",
    "modules" : [
      "OSLog"
    ],
    "preciseIdentifier" : "c:objc(cs)OSLogEntryActivity"
  },
  "title" : "OSLogEntryActivity"
}
-->

# OSLogEntryActivity

An entry generated by an activity event.

```
class OSLogEntryActivity
```

## Topics

### Identifying the Parent

[`parentActivityIdentifier`](/documentation/OSLog/OSLogEntryActivity/parentActivityIdentifier)

The identifier of the parent activity.

## Relationships

### Conforms To

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`NSSecureCoding`](/documentation/Foundation/NSSecureCoding)

[`Hashable`](/documentation/Swift/Hashable)

[`CVarArg`](/documentation/Swift/CVarArg)

[`NSCoding`](/documentation/Foundation/NSCoding)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

[`OSLogEntryFromProcess`](/documentation/OSLog/OSLogEntryFromProcess)

[`Equatable`](/documentation/Swift/Equatable)

### Inherits From

[`OSLogEntry`](/documentation/OSLog/OSLogEntry)

---

Copyright &copy; 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)