---
title: supportsContentExtensions
framework: usernotifications
role: symbol
role_heading: Instance Property
path: usernotifications/unusernotificationcenter/supportscontentextensions
---

# supportsContentExtensions

A Boolean value that indicates whether the device supports notification content extensions.

## Declaration

```swift
var supportsContentExtensions: Bool { get }
```

## Discussion

Discussion Notification content extensions let you customize the appearance of the alerts displayed for your app’s notifications. The value of this property is true for devices that support notification content extensions and false for devices that do not support them. For information about how to implement a notification content extension, see Customizing the Appearance of Notifications.

## See Also

### Processing received notifications

- [delegate](usernotifications/unusernotificationcenter/delegate.md)
- [UNUserNotificationCenterDelegate](usernotifications/unusernotificationcenterdelegate.md)