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# PKPayLaterViewDelegate

Methods the framework calls when the Apple Pay Later view’s size changes.

```
protocol PKPayLaterViewDelegate : NSObjectProtocol
```

## Overview

When manually laying out this view, adopt this protocol to receive a callback when the Apple Pay Layer view’s size changes.

## Topics

### Responding to view size changes

[`func payLaterViewDidUpdateHeight(PKPayLaterView)`](/documentation/PassKit/PKPayLaterViewDelegate/payLaterViewDidUpdateHeight(_:))

Tells the delegate when the Apple Pay Later visual merchandising widget’s height changes.

## Relationships

### Inherits From

[`NSObjectProtocol`](/documentation/ObjectiveC/NSObjectProtocol)

---

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