Hi @Ammar S. Mittori, The way that mail works on my iPad is that it shows two columns at first, and when you press the button to expand to three columns, that button disappears. To go back to the two column view, you click on the rightmost detail column and it will collapse. If you do want to show a button to collapse the third column, you can try code like this: struct ContentView: View { @State private var columnVisibility: NavigationSplitViewVisibility = .all var body: some View { NavigationSplitView(columnVisibility: $columnVisibility) { Text(Column 1) } content: { Text(Column 2) .toolbar { Group { if columnVisibility == .all { ToolbarItem(placement: .navigation) { Button(Back){ columnVisibility = .doubleColumn } } } } } } detail: { Text(Column 3) } } } This code sets a variable for the column visibility to be all the columns, and then changes that variable to just two columns when the back button is clicked
Topic:
UI Frameworks
SubTopic:
SwiftUI
Tags: