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# post(notification:argument:)

Posts a notification to assistive apps.

```
@MainActor static func post(notification: UIAccessibility.Notification, argument: Any?)
```

## Parameters

`notification`

The notification to post (see “Notifications” in <doc://com.apple.documentation/documentation/UIKit/uiaccessibility-protocol> for a list of notifications).

`argument`

The argument specified by the notification. Pass `nil` unless a notification specifies otherwise.

## Discussion

Your application might need to post accessibility notifications if you have user interface components that change very frequently or that appear and disappear.

---

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