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# PKPushRegistryDelegate

The methods that you use to handle incoming PushKit notifications and registration events.

```
protocol PKPushRegistryDelegate : NSObjectProtocol
```

## Overview

Implement the methods of this protocol in an object of your app and assign that object to the [`delegate`](/documentation/PushKit/PKPushRegistry/delegate) property of your `PKPushRegistry` object. Use the methods of this protocol to process incoming notifications and to react to token registration and invalidation.

## Topics

### Responding to Registration Events

[`-  pushRegistry:didUpdatePushCredentials:forType:`](/documentation/PushKit/PKPushRegistryDelegate/pushRegistry(_:didUpdate:for:))

Tells the delegate that the system updated the credentials for the specified type of push notification.

[`-  pushRegistry:didInvalidatePushTokenForType:`](/documentation/PushKit/PKPushRegistryDelegate/pushRegistry(_:didInvalidatePushTokenFor:))

Tells the delegate that the system invalidated the push token for the specified type.

### Handling an Incoming Notification

[`-  pushRegistry:didReceiveIncomingPushWithPayload:forType:withCompletionHandler:`](/documentation/PushKit/PKPushRegistryDelegate/pushRegistry(_:didReceiveIncomingPushWith:for:completion:))

Tells the delegate that a remote push notification arrived.

### Deprecated Methods

[`-  pushRegistry:didReceiveIncomingPushWithPayload:forType:`](/documentation/PushKit/PKPushRegistryDelegate/pushRegistry(_:didReceiveIncomingPushWith:for:))

Notifies the delegate that a remote push has been received.

## Relationships

### Inherits From

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

---

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