# init(wrappedValue:) Creates an observed object with an initial wrapped value. ``` @MainActor @preconcurrency init(wrappedValue: ObjectType) ``` ## Parameters `wrappedValue` An initial value for the observable object. ## Discussion Don’t call this initializer directly. Instead, declare an input to a view with the `@ObservedObject` attribute, and pass a value to this input when you instantiate the view. Unlike a [`StateObject`](/documentation/SwiftUI/StateObject) which manages data storage, you use an observed object to refer to storage that you manage elsewhere, as in the following example: ``` class DataModel: ObservableObject { @Published var name = "Some Name" @Published var isEnabled = false } struct MyView: View { @StateObject private var model = DataModel() var body: some View { Text(model.name) MySubView(model: model) } } struct MySubView: View { @ObservedObject var model: DataModel var body: some View { Toggle("Enabled", isOn: $model.isEnabled) } } ``` Explicitly calling the observed object initializer in `MySubView` would behave correctly, but would needlessly recreate the same observed object instance every time SwiftUI calls the view’s initializer to redraw the view. --- Copyright © 2026 Apple Inc. All rights reserved. | [Terms of Use](https://www.apple.com/legal/internet-services/terms/site.html) | [Privacy Policy](https://www.apple.com/privacy/privacy-policy)