---
title: indexDelegate
framework: corespotlight
role: symbol
role_heading: Instance Property
path: corespotlight/cssearchableindex/indexdelegate
---

# indexDelegate

The delegate object that can handle index-management tasks.

## Declaration

```swift
weak var indexDelegate: (any CSSearchableIndexDelegate)? { get set }
```

## Discussion

Discussion The delegate should conform to the CSSearchableIndexDelegate protocol. Set this property to handle communication with the index and perform index-management tasks for your app. In particular, long-running apps should set a delegate so that the index can be updated while the app is in the background. Alternatively, you can create an extension with a request handler that conforms to the CSSearchableIndexDelegate protocol and let the extension perform index updates when your app isn’t running.

## See Also

### Responding to index-related changes

- [CSSearchableIndexDelegate](corespotlight/cssearchableindexdelegate.md)