ObservableObject: Making Data Drive SwiftUI Views
ObservableObject lets your custom data classes signal SwiftUI views to refresh when data changes. Use it for reference types like a user profile or settings manager. Changes are ignored unless you mark properties with `@Published`, leaving your UI stale.
ObservableObject is a protocol that turns a custom class into a publisher, allowing SwiftUI views to subscribe to its changes. It's the core mechanism for binding your data model to your UI. Implement it on reference types that manage complex state, like a view model fetching network data. The biggest pitfall is forgetting the `@Published` property wrapper; without it, property changes won't notify subscribers, and your view won't update.
Read the original → developer.apple.com
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