# init(_:systemImage:isOn:) Creates a toggle that generates its label from a localized string key and system image. ``` @export(implementation) nonisolated init(_ titleKey: LocalizedStringKey, systemImage: String, isOn: Binding) ``` ## Parameters `titleKey` The key for the toggle’s localized title, that describes the purpose of the toggle. `systemImage` The name of the image resource to lookup. `isOn` A binding to a property that indicates whether the toggle is on or off. ## Discussion This initializer creates a [`Text`](/documentation/SwiftUI/Text) view on your behalf, and treats the localized key similar to [`init(_:tableName:bundle:comment:)`](/documentation/SwiftUI/Text/init(_:tableName:bundle:comment:)). See `Text` for more information about localizing strings. --- 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)