---
title: filter()
framework: quartz
role: symbol
role_heading: Instance Method
path: quartz/ikfilteruiview/filter()
---

# filter()

Returns the Core Image filter associated with the view.

## Declaration

```swift
func filter() -> CIFilter!
```

## Return Value

Return Value The Core Image filter associated with the view.

## See Also

### Getting Data from the Filter View

- [objectController()](quartz/ikfilteruiview/objectcontroller().md)