How does Observable work with Bindings
Asked on 09/13/2024
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In the session titled "SwiftUI essentials" from WWDC 2024, the concept of Observable and Bindings is discussed in the context of state management in SwiftUI. An Observable object is used to create dependencies between views and the data they display. When a property of an observable object changes, SwiftUI automatically updates any views that depend on that property.
Bindings, on the other hand, provide a two-way reference to a state. This means that when a view updates a value through a binding, the change is reflected in the original state, and vice versa. This is particularly useful for creating interactive views where the state needs to be shared or synchronized across multiple views.
For example, in the session, a ratingView is updated to take a binding as an input, allowing the container view to provide a single source of truth for the rating value. This ensures that when the rating is updated in one view, it is reflected across all related views, such as a gauge, maintaining consistency in the UI.
For more details, you can refer to the session SwiftUI essentials (12:29).
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