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# GKChallengeEventHandlerDelegate

You implement the [`GKChallengeEventHandlerDelegate`](/documentation/GameKit/GKChallengeEventHandlerDelegate) delegate to control how challenges are displayed in your game.

```
protocol GKChallengeEventHandlerDelegate : NSObjectProtocol
```

## Overview

By default, GameKit briefly displays a banner over your game when any of the following events occur:

- The local player receives a challenge.
- The local player completes a challenge.
- A remote player completes a challenge issued by the local player.

Your event handler can override or extend this behavior:

- It can prevent a banner from being displayed.
- It can be notified when a player taps in a banner.
- It can handle the events directly.

## Topics

### Detecting When a User Taps a Banner

[`localPlayerDidSelect(_:)`](/documentation/GameKit/GKChallengeEventHandlerDelegate/localPlayerDidSelect(_:))

Called when the local player selects a challenge banner displayed by GameKit.

### Responding When a New Challenge is Received

[`localPlayerDidReceive(_:)`](/documentation/GameKit/GKChallengeEventHandlerDelegate/localPlayerDidReceive(_:))

Called when the local player receives a new challenge.

[`shouldShowBanner(forLocallyReceivedChallenge:)`](/documentation/GameKit/GKChallengeEventHandlerDelegate/shouldShowBanner(forLocallyReceivedChallenge:))

Called to determine whether a banner should be shown when the local player receives a challenge.

### Responding to Challenges Completed By the Local Player

[`localPlayerDidComplete(_:)`](/documentation/GameKit/GKChallengeEventHandlerDelegate/localPlayerDidComplete(_:))

Called when the local player completes a challenge.

[`shouldShowBanner(forLocallyCompletedChallenge:)`](/documentation/GameKit/GKChallengeEventHandlerDelegate/shouldShowBanner(forLocallyCompletedChallenge:))

Called to determine whether a banner should be shown when the local player completes a challenge.

### Responding to Challenges Issued by the Local Player

[`remotePlayerDidComplete(_:)`](/documentation/GameKit/GKChallengeEventHandlerDelegate/remotePlayerDidComplete(_:))

Called when a remote player completes a challenge issued by the local player.

[`shouldShowBanner(forRemotelyCompletedChallenge:)`](/documentation/GameKit/GKChallengeEventHandlerDelegate/shouldShowBanner(forRemotelyCompletedChallenge:))

Called to determine whether a banner should be shown when a remote player completes a challenge.


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