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4 min readJun 24, 2026
MasterOnce

GeometryReader Control

Learn when to use GeometryReader and when to avoid it.

Build a view that reads its width and scales an image.

Repeat with height constraints.

Watch how GeometryReader affects layout priorities.

This drill prevents accidental full-screen layouts.

You learn to use it sparingly and intentionally.

Repetition makes the tradeoffs clear.

Wrap GeometryReader in a fixed frame to limit growth.

Measure only what you need to avoid layout feedback loops.

Try the repetition loop

Pick a SwiftUI concept and write it 50 times. Feel the pattern lock in.