---
title: "init(handler:)"
framework: carplay
role: symbol
role_heading: Initializer
path: "carplay/cpnowplayingbutton/init(handler:)"
---

# init(handler:)

Creates a Now Playing button that invokes a handler.

## Declaration

```swift
init(handler: ((CPNowPlayingButton) -> Void)? = nil)
```

## Parameters

- `handler`: A closure that the button invokes when the user taps it.