# alert(_:isPresented:actions:) Presents an alert when a given condition is true, using a text view for the title. ``` nonisolated func alert(_ title: Text, isPresented: Binding, @ContentBuilder actions: () -> A) -> some View where A : View ``` ## Parameters `title` The title of the alert. `isPresented` A binding to a Boolean value that determines whether to present the alert. When the user presses or taps one of the alert’s actions, the system sets this value to `false` and dismisses. `actions` A `ContentBuilder` returning the alert’s actions. ## Discussion In the example below, a login form conditionally presents an alert by setting the `didFail` state variable. When the form sets the value to to `true`, the system displays an alert with an “OK” action. ``` struct Login: View { @State private var didFail = false let alertTitle: String = "Login failed." var body: some View { LoginForm(didFail: $didFail) .alert( Text(alertTitle), isPresented: $didFail ) { Button("OK") { // Handle the acknowledgement. } } } } ``` All actions in an alert dismiss the alert after the action runs. The default button is shown with greater prominence. You can influence the default button by assigning it the `KeyboardShortcut/defaultAction` keyboard shortcut. The system may reorder the buttons based on their role and prominence. If no actions are present, the system includes a standard “OK” action. No default cancel action is provided. If you want to show a cancel action, use a button with a role of `ButtonRole/cancel`. On iOS, tvOS, and watchOS, alerts only support controls with labels that are `Text`. Passing any other type of view results in the content being omitted. --- 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)