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# AAUSBAccessoryMatchingCriteria

A class that represents the accessory matching criteria for a USB accessory.

```
class AAUSBAccessoryMatchingCriteria
```

## Discussion

A class that conforms to the [`AAUSBAccessoryListener`](/documentation/AccessoryAccess/AAUSBAccessoryListener) protocol can use [`AAUSBAccessoryMatchingCriteria`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria) objects to register itself with [`AAUSBAccessoryManager`](/documentation/AccessoryAccess/AAUSBAccessoryManager).

## Topics

### Creating matching criteria

[`init?(deviceMatchingDictionary: [String : any Sendable])`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/init(deviceMatchingDictionary:))

Initializes a criteria object using a USB device matching dictionary.

[`init?(deviceMatchingDictionary: [String : any Sendable]?, interfaceMatchingDictionaries: [[String : any Sendable]], interfaceMatchingOption: AAUSBAccessoryMatchingCriteria.InterfaceMatchingOption)`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/init(deviceMatchingDictionary:interfaceMatchingDictionaries:interfaceMatchingOption:))

Initializes a criteria object using USB interface matching dictionaries, for the provided USB device matching criteria.

[`convenience init(deviceMatchingCriteria: AAUSBAccessoryMatchingCriteria.DeviceMatchingCriteria)`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/init(deviceMatchingCriteria:))

Initializes a criteria object with the provided USB device matching properties.

[`convenience init(deviceMatchingCriteria: AAUSBAccessoryMatchingCriteria.DeviceMatchingCriteria?, interfaceMatchingCriteria: [AAUSBAccessoryMatchingCriteria.InterfaceMatchingCriteria], interfaceMatchingOption: AAUSBAccessoryMatchingCriteria.InterfaceMatchingOption)`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/init(deviceMatchingCriteria:interfaceMatchingCriteria:interfaceMatchingOption:))

Initializes a criteria object using USB interface matching criteria, for the given USB device matching criteria.

### Specifying device and interface criteria

[`struct DeviceMatchingCriteria`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/DeviceMatchingCriteria)

A structure you provide that enumerates which device characteristics to search for.

[`struct InterfaceMatchingCriteria`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/InterfaceMatchingCriteria)

A structure you provide that enumerates which device interface characteristics to search for.

### Matching options

[`enum InterfaceMatchingOption`](/documentation/AccessoryAccess/AAUSBAccessoryMatchingCriteria/InterfaceMatchingOption)

Values that represent options for performing interface matching using interface matching criteria.

## Relationships

### Conforms To

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

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

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

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

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

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

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

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

[`NSCopying`](/documentation/Foundation/NSCopying)

### Inherits From

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

---

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