Jared Sinclair • 3/2/2024

Scaled Metric Surprises on iOS & iPadOS

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This technical article details how UIKit's UIFontMetrics.scaledValue(for:) and SwiftUI's @ScaledMetric property wrapper do not scale values proportionally to the default system font sizes for a given text style (e.g., .body). It demonstrates the divergence with code examples and recommends directly using a UIFont's pointSize for exact proportional scaling with dynamic type.

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#accessibility #Io #Typography
Scaled Metric Surprises on iOS & iPadOS

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