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  "documentType" : "symbol",
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  "title" : "ASAccessoryEvent"
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# ASAccessoryEvent

Properties of an event encountered during accessory discovery.

```
class ASAccessoryEvent
```

## Overview

The event handler you register with the session’s [`activate(on:eventHandler:)`](/documentation/AccessorySetupKit/ASAccessorySession/activate(on:eventHandler:)) method receives objects of this type from the session. Each event identifies the type of event and which accessory (if any) is involved.

## Topics

### Inspecting the event

[`var accessory: ASAccessory?`](/documentation/AccessorySetupKit/ASAccessoryEvent/accessory)

The accessory involved in the event, if any.

[`class ASAccessory`](/documentation/AccessorySetupKit/ASAccessory)

An accessory discovered by the accessory session.

[`var eventType: ASAccessoryEventType`](/documentation/AccessorySetupKit/ASAccessoryEvent/eventType)

The type of event, such as accessory addition or removal, or picker presentation or removal.

[`enum ASAccessoryEventType`](/documentation/AccessorySetupKit/ASAccessoryEventType)

An enumeration of the types of events encountered during accessory discovery

### Handling errors

[`var error: (any Error)?`](/documentation/AccessorySetupKit/ASAccessoryEvent/error)

The error associated with the event, if any.

## Relationships

### Conforms To

[`Sendable`](/documentation/Swift/Sendable)

[`CustomDebugStringConvertible`](/documentation/Swift/CustomDebugStringConvertible)

[`SendableMetatype`](/documentation/Swift/SendableMetatype)

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

[`Equatable`](/documentation/Swift/Equatable)

[`CVarArg`](/documentation/Swift/CVarArg)

[`Hashable`](/documentation/Swift/Hashable)

[`CustomStringConvertible`](/documentation/Swift/CustomStringConvertible)

### Inherits From

[`NSObject-swift.class`](/documentation/ObjectiveC/NSObject-swift.class)

---

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