Question 328004 in IOS Swift Question posted in
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Ios swift – Setting ScrollView contentSize in SwiftUI

Is it possible to explicitly set content size of ScrollView in SwiftUI (like we do in UIKit)? I tried setting frame or height of ScrollView to 10000 points but it seems to be ignored.

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2

Answers


  1. 0

    ScrollView automatically has contentSize equal to all its child view’s sizes. So you can simply add a Spacer and set a frame for it. Changing the scrollView frame by itself won’t have any effect unless you put scrollView inside another View.

    ScrollView {
    Spacer()
        .frame(height: 1000)
        .frame(maxWidth: .infinity)
    ...
}
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  2. 0

    In iOS 17+ you can use

    .containerRelativeFrame

    Here is some sample code.

    ScrollView(.horizontal) {
    LazyHStack(spacing: 10.0) {
        ForEach(0..<5) { item in
            Rectangle()
                .fill(.purple)
                .aspectRatio(3.0 / 2.0, contentMode: .fit)
                .containerRelativeFrame(
                    .horizontal, count: 4, span: 3, spacing: 10.0)
        }
    }
}
.safeAreaPadding(.horizontal, 20.0)

    I would also recommend watching the related WWDC video.

    https://developer.apple.com/wwdc23/10159

    Prior to iOS 17 you would have to set the size manually or use the default size.

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