How to set addObserver in SwiftUI?

Question

How do I add NotificationCenter.default.addObserve in SwiftUI?

When I tried adding observer I get below error

Argument of \'#sele

Answer 1

I use this extension so it's a bit nicer on the call site:

/// Extension

extension View {
    func onReceive(_ name: Notification.Name,
                   center: NotificationCenter = .default,
                   object: AnyObject? = nil,
                   perform action: @escaping (Notification) -> Void) -> some View {
        self.onReceive(
            center.publisher(for: name, object: object), perform: action
        )
    }
}

/// Usage

struct MyView: View {
    var body: some View {
        Color.orange
            .onReceive(.myNotification) { _ in
                print(#function)
            }
    }
}

extension Notification.Name {
    static let myNotification = Notification.Name("myNotification")
}