# popover(item:attachmentAnchor:arrowEdge:content:) Presents a popover using the given item as a data source for the popover’s content. ``` @export(implementation) nonisolated func popover(item: Binding, attachmentAnchor: PopoverAttachmentAnchor = .rect(.bounds), arrowEdge: Edge? = nil, @ContentBuilder content: @escaping (Item) -> Content) -> some View where Item : Identifiable, Content : View ``` ## Parameters `item` A binding to an optional source of truth for the popover. When `item` is non-`nil`, the system passes the contents to the modifier’s closure. You use this content to populate the fields of a popover that you create that the system displays to the user. If `item` changes, the system dismisses the currently presented popover and replaces it with a new popover using the same process. `attachmentAnchor` The positioning anchor that defines the attachment point of the popover. The default is [`bounds`](/documentation/SwiftUI/Anchor/Source/bounds). `arrowEdge` The edge of the `attachmentAnchor` that defines the location of the popover’s arrow. The default is `nil`, which results in the system allowing any arrow edge. `content` A closure returning the content of the popover. ## Discussion Use this method when you need to present a popover with content from a custom data source. The example below uses data in the `PopoverModel` structure to populate the view in the `content` closure that the popover displays to the user: ``` struct PopoverExample: View { @State private var popover: PopoverModel? var body: some View { Button("Show Popover") { popover = PopoverModel(message: "Custom Message") } .popover(item: $popover, arrowEdge: .bottom) { detail in Text("\(detail.message)") .padding() } } } struct PopoverModel: Identifiable { var id: String { message } let message: String } ```  > Important: Prior to iOS 18.1, the popover arrow edge was not > respected. Apps that are re-compiled with the iOS 18.1 or later SDK or > visionOS 2.1 or later SDK and run on iOS 18.1 or later or visionOS 2.1 > or later have the arrow edge respected. On macOS, arrow edge has always > been respected. Alternatively, to allow the system to choose the > best orientation of the popover’s arrow, use the > ``View/popover(item:attachmentAnchor:content:)`` variant. ### 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 .popover(item: $popover) { detail in Text("\(detail.message)") .padding() .presentationBreakthroughEffect(.prominent) } ``` --- 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)