swiftui - How to absolutely position a child view globally

Question

How do I absolutely position a child view within the main window?

position(x:y:) and offset(x:y:) are relative to the parent.

The best I got to was to use GeometryReader and calculate the position/offset, for example, to position the circle at the bottom of the screen:

GeometryReader { geo in
  Circle()
    .foregroundColor(.red)
    .frame(width: 100, height: 100)
    .offset(x: 0, y: UIScreen.main.bounds.size.height - geo.frame(in: .global).maxY)
}

But it's problematic. GeometryReader distorts the layout and the result would change depending on the parent of Circle.

Is there a well established way to position Circle, say in the middle of the width of the screen and 10% (or fixed amount) off of the bottom of the screen?

EDIT: here's an example of what I'm trying to achieve:

struct InnerView: View {
    var body: some View {
        Circle()
            .foregroundColor(.green)
            .frame(width: 100, height: 100)
    }
}

struct ContentView: View {
    
    var body: some View {
        LazyVGrid(columns: [.init(),.init()], content: {
            InnerView()
            InnerView()
            InnerView()
        })
    }
}

Can one of the InnerViews render their circle relative in the mid-bottom area of the window?

Answer 1

等待大神答复