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How to present a full screen modal view using fullScreenCover()

Paul Hudson    @twostraws   

Updated for Xcode 12.5

New in iOS 14

SwiftUI’s fullScreenCover() modifier gives us a presentation style for times when you want to cover as much of the screen as possible, and in code it works almost identically to regular sheets.

Regular sheets can be dismissed by dragging downwards on them, but that isn’t possible with views presented using fullScreenCover(). As a result, it’s important you provide a way to dismiss the presented view, probably using the presentationMode environment key.

Important: fullScreenCover() is not available on macOS.

For example, this defines a simple FullScreenModalView struct that can dismiss itself, then presents it from ContentView when another button is pressed:

struct FullScreenModalView: View {
    @Environment(\.presentationMode) var presentationMode

    var body: some View {
        Button("Dismiss Modal") {
            presentationMode.wrappedValue.dismiss()
        }
    }
}

struct ContentView: View {
    @State private var isPresented = false

    var body: some View {
        Button("Present!") {
            isPresented.toggle()
        }
        .fullScreenCover(isPresented: $isPresented, content: FullScreenModalView.init)
    }
}
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