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# dropInteraction(_:item:willAnimateDropWith:)

Tells the delegate the system’s drop animation is about to start.

```
optional func dropInteraction(_ interaction: UIDropInteraction, item: UIDragItem, willAnimateDropWith animator: any UIDragAnimating)
```

## Parameters

`interaction`

The interaction that called this method.

`item`

The current drag item.

`animator`

The animator that provides custom animations to run alongside the system’s drop animation. You can also use it to add a completion block that runs after the animations have finished.

## Discussion

This method is called for each drag item in the session, whether the item’s visible or not.

---

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