SwiftUI iOS14 – NavigationView + List – Won’t fill space

Problem

It looks like the default styles of a List or NavigationView in iOS 14 may in some cases be different than in iOS 13.

Solution #1 – explicit listStyle

It’s no longer always the PlainListStyle (as in iOS 13) but sometimes the InsetGroupedListStyle as well.

You need to explicitly specify the listStyle to PlainListStyle:

.listStyle(PlainListStyle())

Example:

struct ContentView: View {
    var views = ["Line 1", "Line 2", "Line 3"]

    var body: some View {
        NavigationView {
            VStack {
                List {
                    ForEach(views, id: \.self) { view in
                        VStack {
                            Text("\(view)")
                        }
                        .background(Color.red)
                    }
                }
                .listStyle(PlainListStyle()) // <- add here
            }
        }
    }
}

Solution #2 – explicit navigationViewStyle

It looks like the NavigationView’s default style can sometimes be the DoubleColumnNavigationViewStyle (even on iPhones).

You can try setting the navigationViewStyle to the StackNavigationViewStyle (as in iOS 13):

.navigationViewStyle(StackNavigationViewStyle())

Example:

struct ContentView: View {
    var views = ["Line 1", "Line 2", "Line 3"]

    var body: some View {
        NavigationView {
            VStack {
                List {
                    ForEach(views, id: \.self) { view in
                        VStack {
                            Text("\(view)")
                        }
                        .background(Color.red)
                    }
                }
            }
        }
        .navigationViewStyle(StackNavigationViewStyle()) // <- add here
    }
}