---
title: "pickerView(_:viewForRow:forComponent:reusing:)"
framework: uikit
role: symbol
role_heading: Instance Method
path: "uikit/uipickerviewdelegate/pickerview(_:viewforrow:forcomponent:reusing:)"
---

# pickerView(_:viewForRow:forComponent:reusing:)

Called by the picker view when it needs the view to use for a given row in a given component.

## Declaration

```swift
optional func pickerView(_ pickerView: UIPickerView, viewForRow row: Int, forComponent component: Int, reusing view: UIView?) -> UIView
```

## Parameters

- `pickerView`: An object representing the picker view requesting the data.
- `row`: A zero-indexed number identifying a row of component. Rows are numbered top-to-bottom.
- `component`: A zero-indexed number identifying a component of pickerView. Components are numbered left-to-right.
- `view`: A view object that was previously used for this row, but is now hidden and cached by the picker view.

## Return Value

Return Value A view object to use as the content of row. The object can be any subclass of UIView, such as UILabel, UIImageView, or even a custom view.

## Discussion

Discussion If the previously used view (the view parameter) is adequate, return that. If you return a different view, the previously used view is released. The picker view centers the returned view in the rectangle for row.

## See Also

### Setting the content of component rows

- [pickerView(_:titleForRow:forComponent:)](uikit/uipickerviewdelegate/pickerview(_:titleforrow:forcomponent:).md)
- [pickerView(_:attributedTitleForRow:forComponent:)](uikit/uipickerviewdelegate/pickerview(_:attributedtitleforrow:forcomponent:).md)