# init(_:value:formatter:onEditingChanged:onCommit:) Creates an instance which binds over an arbitrary type, `T`. ``` nonisolated init(_ titleKey: LocalizedStringKey, value: Binding, formatter: Formatter, onEditingChanged: @escaping (Bool) -> Void, onCommit: @escaping () -> Void) ``` ## Parameters `titleKey` The key for the localized title of the text field, describing its purpose. `value` The underlying value to be edited. `formatter` A formatter to use when converting between the string the user edits and the underlying value of type `T`. In the event that `formatter` is unable to perform the conversion, `binding.value` isn’t modified. `onEditingChanged` The action to perform when the user begins editing `text` and after the user finishes editing `text`. The closure receives a Boolean value that indicates the editing status: `true` when the user begins editing, `false` when they finish. `onCommit` An action to perform when the user performs an action (for example, when the user presses the Return key) while the text field has focus. --- 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)