SwiftUI Core Patterns

Modern SwiftUI patterns for views, navigation, state, toolbars, and text editing.

Critical Constraints

• ❌ NavigationView → ✅ NavigationSplitView (sidebar/detail) or NavigationStack (push/pop)
• ❌ @StateObject → ✅ @State with @Observable classes (macOS 14+)
• ❌ @ObservedObject → ✅ direct property or @Bindable for bindings
• ❌ @EnvironmentObject → ✅ @Environment with custom key
• ❌ toolbar { } without IDs for customizable toolbars → ✅ toolbar(id:) with ToolbarItem(id:)
• ❌ Old .searchable without behavior → ✅ Add .searchToolbarBehavior(.minimize) for space efficiency
• ❌ Plain String in TextEditor for rich text → ✅ Use AttributedString binding

Reference Index