# Speed Configure the details for parameter variables that contain speed values. ## Topics ### Creating an intent parameter [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, defaultValue: Double?, defaultUnit: IntentParameter.Speed?, defaultUnitAdjustForLocale: Bool, supportsNegativeNumbers: Bool, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior)`](/documentation/AppIntents/IntentParameter/init(title:description:defaultValue:defaultUnit:defaultUnitAdjustForLocale:supportsNegativeNumbers:requestValueDialog:inputConnectionBehavior:)-5i0hc) Creates an app intent parameter with a default unit for the measurement. [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, defaultValue: Double?, defaultUnit: IntentParameter.Speed?, defaultUnitAdjustForLocale: Bool, supportsNegativeNumbers: Bool, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior, resolvers: () -> Spec)`](/documentation/AppIntents/IntentParameter/init(title:description:defaultValue:defaultUnit:defaultUnitAdjustForLocale:supportsNegativeNumbers:requestValueDialog:inputConnectionBehavior:resolvers:)-6xvn5) Creates an app intent parameter with a default unit for the measurement. [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, defaultValue: Double?, unit: IntentParameter.Speed, unitAdjustForLocale: Bool, supportsNegativeNumbers: Bool, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior)`](/documentation/AppIntents/IntentParameter/init(title:description:defaultValue:unit:unitAdjustForLocale:supportsNegativeNumbers:requestValueDialog:inputConnectionBehavior:)-9yog) Creates an app intent parameter that specifies the unit for the measurement. [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, defaultValue: Double?, unit: IntentParameter.Speed, unitAdjustForLocale: Bool, supportsNegativeNumbers: Bool, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior, resolvers: () -> Spec)`](/documentation/AppIntents/IntentParameter/init(title:description:defaultValue:unit:unitAdjustForLocale:supportsNegativeNumbers:requestValueDialog:inputConnectionBehavior:resolvers:)-7pyxn) Creates an app intent parameter that specifies the unit for the measurement. [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior, optionsProvider: OptionsProvider)`](/documentation/AppIntents/IntentParameter/init(title:description:requestValueDialog:inputConnectionBehavior:optionsProvider:)-6c1ac) Creates an app intent parameter with a list of selectable options. [`convenience init(title: LocalizedStringResource, description: LocalizedStringResource?, requestValueDialog: IntentDialog?, inputConnectionBehavior: InputConnectionBehavior, resolvers: () -> Spec, optionsProvider: OptionsProvider)`](/documentation/AppIntents/IntentParameter/init(title:description:requestValueDialog:inputConnectionBehavior:resolvers:optionsProvider:)-3owho) Creates an app intent parameter with a list of selectable options that can convert the selected value. ### Accessing unit details [`var unit: IntentParameter.Speed?`](/documentation/AppIntents/IntentParameter/unit-620ka) [`enum Speed`](/documentation/AppIntents/IntentParameter/Speed) [`var defaultUnit: IntentParameter.Speed?`](/documentation/AppIntents/IntentParameter/defaultUnit-92l04) [`var supportsNegativeNumbers: Bool?`](/documentation/AppIntents/IntentParameter/supportsNegativeNumbers-1bekt) [`var unitAdjustForLocale: Bool?`](/documentation/AppIntents/IntentParameter/unitAdjustForLocale-8a31x) --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)