# alert(item:content:) Presents an alert to the user. ``` nonisolated func alert(item: Binding, content: (Item) -> Alert) -> some View where Item : Identifiable ``` ## Parameters `item` A binding to an optional source of truth for the alert. if `item` is non-`nil`, the system passes the contents to the modifier’s closure. You use this content to populate the fields of an alert that you create that the system displays to the user. If `item` changes, the system dismisses the currently displayed alert and replaces it with a new one using the same process. `content` A closure returning the alert to present. ## Discussion Use this method when you need to show an alert that contains information from a binding to an optional data source that you provide. The example below shows a custom data source `FileInfo` whose properties configure the alert’s `message` field: ``` struct FileInfo: Identifiable { var id: String { name } let name: String let fileType: UTType } struct ConfirmImportAlert: View { @State private var alertDetails: FileInfo? var body: some View { Button("Show Alert") { alertDetails = FileInfo(name: "MyImageFile.png", fileType: .png) } .alert(item: $alertDetails) { details in Alert(title: Text("Import Complete"), message: Text(""" Imported \(details.name) \n File type: \(details.fileType.description). """), dismissButton: .default(Text("Dismiss"))) } } } ```  --- 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)