How to Obtain View Dimensions in SwiftUI

TL;DR: Use GeometryReader, onGeometryChange , visualEffect, or containerRelativeFrameto dynamically retrieve and respond to view dimensions in SwiftUI. Each method caters to specific use cases and levels of customization.

Background

Dynamically retrieving the dimensions of a view is a common requirement in SwiftUI, especially in scenarios where layouts need to respond to size changes. This article introduces several methods to obtain view dimensions and their applicable use cases.

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Using GeometryReader

GeometryReader is a highly adaptable method compatible with all SwiftUI versions. It is…