SwiftUI: Spacer doesn't work at ScrollView

Question

How can I get space in VStack to pin the button at the bottom?

ScrollView {
        VStack() {
            Text("Title_1")
                .padding(.bottom, 35.0)
            Text("Title_2")
                .padding(.bottom, 32.0)
            Text("Title_3")
                .padding(.bottom, 27.0)
            
            Spacer()
            Button(action: { print("ACTION") }) {
                Text("OK")
                    .font(.title)
                    .fontWeight(.semibold)
                    .foregroundColor(Color.red)
                    
            }
            .frame(height: 35)
            .cornerRadius(8.0)
            .padding(.bottom, 25.0)
        }
        .frame(maxWidth: .infinity)
    }

what I have

what I want to have

8HP8 · Accepted Answer · 2021-09-02 07:48:57Z

51

The ScrollView gives that VStack infinite possible height. That's why the spacers not working.

The Fix:

Give the VStack a minimumHeight that’s the height of the ScrollView or View
Also important to set the scrollview's width to be the view's width

GeometryReader { geometry in
    ScrollView(showsIndicators: false) {
        VStack {
        ...
        }
        .frame(minHeight: geometry.size.height)
    }.frame(width: geometry.size.width)
}

THIS WAY THE CONTENT WILL BE ABLE TO LAYOUT BEYOND THE VIEW's HEIGHT IF NEEDED

edited Sep 2, 2021 at 7:48

answered Aug 26, 2021 at 9:04

8HP8

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5 Comments

NeverwinterMoon Over a year ago

At a glance, this looks nice and works. Sadly, at least with iOS 15, because of this approach, the text views inside VStack can get compressed, resulting in the truncated text. To test: put several blocks of Text views inside the Stack, so it would be one screen height worth of content, some of the Text views would get compressed, some won't in my case.

passatgt Over a year ago

@NeverwinterMoon i just checked and works for me now, maybe it was a bug that got fixed.

joshuakcockrell Over a year ago

Unfortunately this has some weird behavior if it's inside of a NavigationView.

Nik Over a year ago

Doesn't work in iOS17

Cameron Porter Over a year ago

Add .fixedSize(horizontal: false, vertical: true) to fix any Text that gets compressed as a result of this

mahan · Accepted Answer · 2021-06-27 12:36:52Z

Use GeometryReader

A container view that defines its content as a function of its own size and coordinate space. https://developer.apple.com/documentation/swiftui/geometryreader

GeometryReader { geometry in
    ScrollView {
        VStack() {
          -----
        }
        .frame(width: geometry.size.width, height: geometry.size.height)
    }
}

Doing so, the VStack is full-screen.

You may not neeed to use ScrollView, because you do not need to scroll to see its content.

    var body: some View {
        
        VStack() {
            Text("Title_1")
                .padding(.bottom, 35.0)
            Text("Title_2")
                .padding(.bottom, 32.0)
            Text("Title_3")
                .padding(.bottom, 27.0)
            
            Spacer()
            Button(action: { print("ACTION") }) {
                Text("OK")
                    .font(.title)
                    .fontWeight(.semibold)
                    .foregroundColor(Color.red)
                
            }
            .frame(height: 35)
            .cornerRadius(8.0)
            .padding(.bottom, 25.0)
        }
        .frame(maxWidth: .infinity)
    }

But if your content's height is more than the screen height, the OK button is at the bottom, regardless. Hence, you do not need to do anything.

Mykyta Khlamov · Accepted Answer · 2025-10-23 14:08:13Z

0

From iOS 17 you could use .containerRelativeFrame() modifier.
But it could be tricky for Views with a lot of content for small screens.

ScrollView {
    VStack {
        Spacer()
        
        Text("Hello, world!")
        
        Spacer()
        
        Text("Some Text")
    }
    .containerRelativeFrame(.vertical)
}

More: https://www.hackingwithswift.com/quick-start/swiftui/how-to-adjust-the-size-of-a-view-relative-to-its-container

edited Oct 23 at 14:08

answered Oct 23 at 10:45

Mykyta Khlamov

415 bronze badges

Comments

Rushani Shawuti · Accepted Answer · 2022-06-28 15:53:45Z

-3

Setting minHeight to screen height like other answers suggested works, but it brings issue where the ScrollView will no longer scroll beyond the screen height.

Proper solution is wrapping a VStack outside of the ScrollView.

For your case,

VStack {
    ScrollView {
        VStack() {
            Text("Title_1")
                .padding(.bottom, 35.0)
            Text("Title_2")
                .padding(.bottom, 32.0)
            Text("Title_3")
                .padding(.bottom, 27.0)
        }
        .frame(maxWidth: .infinity)
    }
    Spacer()
    Button(action: { print("ACTION") }) {
        Text("OK")
          .font(.title)
          .fontWeight(.semibold)
          .foregroundColor(Color.red)
    }
    .frame(height: 35)
    .cornerRadius(8.0)
    .padding(.bottom, 25.0)
}

answered Jun 28, 2022 at 15:53

Rushani Shawuti

1

1 Comment

Hamad Fuad Over a year ago

It won't give your the best user experience

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