# sheet(isPresented:onDismiss:content:) Presents a sheet when a binding to a Boolean value that you provide is true. ``` nonisolated func sheet(isPresented: Binding, onDismiss: (() -> Void)? = nil, @ContentBuilder content: @escaping () -> Content) -> some View where Content : View ``` ## Parameters `isPresented` A binding to a Boolean value that determines whether to present the sheet that you create in the modifier’s `content` closure. `onDismiss` The closure to execute when dismissing the sheet. `content` A closure that returns the content of the sheet. ## Discussion Use this method when you want to present a modal view to the user when a Boolean value you provide is true. The example below displays a modal view of the mockup for a software license agreement when the user toggles the `isShowingSheet` variable by clicking or tapping on the “Show License Agreement” button: ``` struct ShowLicenseAgreement: View { @State private var isShowingSheet = false var body: some View { Button(action: { isShowingSheet.toggle() }) { Text("Show License Agreement") } .sheet(isPresented: $isShowingSheet, onDismiss: didDismiss) { VStack { Text("License Agreement") .font(.title) .padding(50) Text(""" Terms and conditions go here. """) .padding(50) Button("Dismiss", action: { isShowingSheet.toggle() }) } } } func didDismiss() { // Handle the dismissing action. } } ```  In vertically compact environments, such as iPhone in landscape orientation, a sheet presentation automatically adapts to appear as a full-screen cover. Use the [`presentationCompactAdaptation(_:)`](/documentation/SwiftUI/View/presentationCompactAdaptation(_:)) or [`presentationCompactAdaptation(horizontal:vertical:)`](/documentation/SwiftUI/View/presentationCompactAdaptation(horizontal:vertical:)) modifier to override this behavior. ### Breakthrough effect In visionOS, most system presentations appear with a breakthrough effect by default. To change how the enclosing presentation breaks through content occluding it, use [`presentationBreakthroughEffect(_:)`](/documentation/SwiftUI/View/presentationBreakthroughEffect(_:)), like in the following example: ```swift .sheet(isPresented: $isShowingSheet, onDismiss: didDismiss) { VStack { Text("License Agreement") .font(.title) .padding(50) Text(""" Terms and conditions go here. """) .padding(50) Button("Dismiss", action: { isShowingSheet.toggle() }) } .presentationBreakthroughEffect(.prominent) } ``` > Passing a `.none` value for a sheet has no effect. --- 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)