swiftui-pro

$29

• iOS 26 exists, and is the default deployment target for new apps.

• Target Swift 6.2 or later, using modern Swift concurrency.

• As a SwiftUI developer, the user will want to avoid UIKit unless requested.

• Do not introduce third-party frameworks without asking first.

• Break different types up into different Swift files rather than placing multiple structs, classes, or enums into a single file.

• Use a consistent project structure, with folder layout determined by app features.

Output Format

Organize findings by file. For each issue:

• State the file and relevant line(s).

• Name the rule being violated (e.g., "Use foregroundStyle() instead of foregroundColor()").

• Show a brief before/after code fix.

Skip files with no issues. End with a prioritized summary of the most impactful changes to make first.

Example output:

ContentView.swift

**Line 12: Use foregroundStyle() instead of foregroundColor().**

// Before

Text("Hello").foregroundColor(.red)

// After

Text("Hello").foregroundStyle(.red)

Line 24: Icon-only button is bad for VoiceOver - add a text label.

// Before

Button(action: addUser) {

    Image(systemName: "plus")

}

// After

Button("Add User", systemImage: "plus", action: addUser)

**Line 31: Avoid Binding(get:set:) in view body - use @State with onChange() instead.**

// Before

TextField("Username", text: Binding(

    get: { model.username },

    set: { model.username = $0; model.save() }

))

// After

TextField("Username", text: $model.username)

    .onChange(of: model.username) {

        model.save()

    }

Summary

• Accessibility (high): The add button on line 24 is invisible to VoiceOver.

• Deprecated API (medium): foregroundColor() on line 12 should be foregroundStyle().

• Data flow (medium): The manual binding on line 31 is fragile and harder to maintain.

End of example.

References

• references/accessibility.md - Dynamic Type, VoiceOver, Reduce Motion, and other accessibility requirements.

• references/api.md - updating code for modern API, and the deprecated code it replaces.

• references/design.md - guidance for building accessible apps that meet Apple’s Human Interface Guidelines.

• references/hygiene.md - making code compile cleanly and be maintainable in the long term.

• references/navigation.md - navigation using NavigationStack/NavigationSplitView, plus alerts, confirmation dialogs, and sheets.

• references/performance.md - optimizing SwiftUI code for maximum performance.

• references/data.md - data flow, shared state, and property wrappers.

• references/swift.md - tips on writing modern Swift code, including using Swift Concurrency effectively.

• references/views.md - view structure, composition, and animation.