---
title: behavior
framework: uikit
role: symbol
role_heading: Instance Property
path: uikit/uimutableusernotificationaction/behavior
---

# behavior

The custom behavior (if any) that the action supports.

## Declaration

```swift
var behavior: UIUserNotificationActionBehavior { get set }
```

## Discussion

Discussion The default value of this property is UIUserNotificationActionBehaviorDefault.

## See Also

### Configuring the action’s behavior

- [activationMode](uikit/uimutableusernotificationaction/activationmode.md)
- [isAuthenticationRequired](uikit/uimutableusernotificationaction/isauthenticationrequired.md)
- [isDestructive](uikit/uimutableusernotificationaction/isdestructive.md)
- [parameters](uikit/uimutableusernotificationaction/parameters.md)