Alert

struct · iOS 13.0+ · Deprecated in iOS 100000.0 · SDK 27.1

struct Alert

A representation of an alert presentation. Use an alert when you want the user to act in response to the state of the app or the system. If you want the user to make a choice in response to their own action, use an ``ActionSheet`` instead. You show an alert by using the ``View/alert(isPresented:content:)`` view modifier to create an alert, which then appears whenever the bound `isPresented` value is `true`. The `content` closure you provide to this modifer produces a customized instance of the `Alert` type. In the following example, a button presents a simple alert when tapped, by updating a local `showAlert` property that binds to the alert. @State private var showAlert = false var body: some View { Button("Tap to show alert") { showAlert = true } .alert(isPresented: $showAlert) { Alert( title: Text("Current Location Not Available"), message: Text("Your current location can’t be " + "determined at this time.") ) } }  To customize the alert, add instances of the ``Alert/Button`` type, which provides standardized buttons for common tasks like canceling and performing destructive actions. The following example uses two buttons: a default button labeled "Try Again" that calls a `saveWorkoutData` method, and a "destructive" button that calls a `deleteWorkoutData` method. @State private var showAlert = false var body: some View { Button("Tap to show alert") { showAlert = true } .alert(isPresented: $showAlert) { Alert( title: Text("Unable to Save Workout Data"), message: Text("The connection to the server was lost."), primaryButton: .default( Text("Try Again"), action: saveWorkoutData ), secondaryButton: .destructive( Text("Delete"), action: deleteWorkoutData ) ) } }  The alert handles its own dismissal when the user taps one of the buttons in the alert, by setting the bound `isPresented` value back to `false`.

Members (2)

static initTitleMessageDismissButton(title: _SwiftUICore_Text, message?: (_SwiftUICore_Text) | null, dismissButton?: (Alert_Button) | null): Alert

init(title: Text, message: Text? = nil, dismissButton: Alert.Button? = nil)

static initTitleMessagePrimaryButtonSecondaryButton(title: _SwiftUICore_Text, message: (_SwiftUICore_Text) | null, primaryButton: Alert_Button, secondaryButton: Alert_Button): Alert

init(title: Text, message: Text? = nil, primaryButton: Alert.Button, secondaryButton: Alert.Button)

All SwiftUI types →