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How to hide and reveal content using DisclosureGroup

Paul Hudson    @twostraws   

Updated for Xcode 12.5

SwiftUI has a dedicated DisclosureGroup view that presents a disclosure indicator and contains content inside. This can be bound to some sort of Boolean property that determines whether the content is currently visible or not, but then you can place lots of views inside there to display when unfolded.

For example, this creates a DisclosureGroup with lots of text inside, and by default the text will be hidden – the user will need to open the disclosure indicator to reveal it:

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

    var body: some View {
        DisclosureGroup("Show Terms", isExpanded: $revealDetails) {
            Text("Long terms and conditions here long terms and conditions here long terms and conditions here long terms and conditions here long terms and conditions here long terms and conditions here.")
        .frame(width: 300)

Tip: If you don’t need to show or hide the disclosure group’s contents programmatically, you can remove the binding entirely and just rely on the default UI.

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