Use SwiftUI GeometryReader without affecting outer frame?

Question

Is it possible to use GeometryReader in such a way that it doesn't just fill up the parent view?

As a specific example, I want to control a bottom margin using .padding(.bottom, geometry.safeAreaInsets.bottom > 0 ? 0 : 12.0). This would use the safe area as the margin on iPhone X and a custom margin on older devices.

Without the GeometryReader my view takes up space appropriate to its actual vertical size. With the reader the view takes up 1/2 the screen.

    VStack {
      Spacer()
      GeometryReader { proxy in // Lays out nicely without this...
        HStack {
          Text("Wrong")
          Spacer()
        }.border(Color.gray, width: 1)
      }

Krames · Accepted Answer · 2019-06-10 13:37:57Z

19

Just add the .fixedSize() modifier to your HStack. That will achieve the desired affect.

answered Jun 10, 2019 at 13:37

Krames

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1 Comment

arsenius Over a year ago

fixedSize() works in that example, and attaching fixedSize(horizontal:vertical:) to my GeometryReader worked in the View I was actually working on (had nested ZStacks).

Vitaly · Accepted Answer · 2021-01-25 02:08:11Z

17

You can also try adding .aspectRatio(contentMode: .fit) modifier to GeometryReader.

answered Jan 25, 2021 at 2:08

Vitaly

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