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# UIDynamicAnimatorDelegate

To respond to the pausing or resumption of UIKit dynamic animation, configure a custom class to adopt the [`UIDynamicAnimatorDelegate`](/documentation/UIKit/UIDynamicAnimatorDelegate) protocol. Then, in a dynamic animator (an instance of the [`UIDynamicAnimator`](/documentation/UIKit/UIDynamicAnimator) class), set the delegate to be an instance of your custom class.

```
@MainActor protocol UIDynamicAnimatorDelegate : NSObjectProtocol
```

## Topics

### Responding to animation pausing and resumption

[`dynamicAnimatorDidPause(_:)`](/documentation/UIKit/UIDynamicAnimatorDelegate/dynamicAnimatorDidPause(_:))

Called when a dynamic animator pauses the animations for its behaviors’ associated dynamic items.

[`dynamicAnimatorWillResume(_:)`](/documentation/UIKit/UIDynamicAnimatorDelegate/dynamicAnimatorWillResume(_:))

Called when a dynamic animator is about to resume the animations for its behaviors’ associated dynamic items.


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