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# handle(_:)

Responds to Handoff–related activity from Siri.

```
optional func handle(_ userActivity: NSUserActivity)
```

## Parameters

`userActivity`

The activity object containing the data associated with the task the user was performing. Use the data to continue the user’s activity in your app on Apple Watch.

## Discussion

WatchKit calls this method when it receives data associated with a user activity. Use this method to update your app on Apple Watch so that the user can continue the activity from where they left off.

---

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