Using SwiftUI with a HUD - swift

Question

I created a SwiftUI-based, HUD class (based on SwiftyHUDView):
struct ActivityIndicatorView<Content>: View where Content: View {
#Binding var isShowing: Bool
var content: () -> Content
var body: some View {
GeometryReader { geometry in
ZStack(alignment: .center) {
self.content()
.disabled(self.isShowing)
.blur(radius: self.isShowing ? 3 : 0)
VStack {
Text("Loading...")
ActivityIndicator(isAnimating: .constant(true), style: .large)
}
.frame(width: geometry.size.width / 2,
height: geometry.size.height / 5)
.background(Color.secondary.colorInvert())
.foregroundColor(Color.primary)
.cornerRadius(20)
.opacity(self.isShowing ? 1 : 0)
}
}
}
}
The first time I use this:
#ObservedObject var serviceManager = ServiceManager()
ActivityIndicatorView(isShowing: .constant(serviceManager.loading)) {
NavigationView {
ZStack {
...
}
}
}.onAppear(perform: self.serviceFetch)
private func serviceFetch() {
serviceManager.loadSomeData()
}
}
class ServiceManager: ObservableObject {
#Published var someData: [String] = []
#Published var loading = false
init() {
loading = true
}
public func loadSomeData() {
go get some data ...
self.loading = false
}
}
The HUD class works fine, it disappears once the service call has returned data.
However, if I attempt to use the ActivityIndicatorView a second time in a different screen, the HUD screen stays up, even after the service call returns data and the #Published loading value is set to false.
My question is this. Because I am using ActivityIndicatorView a second time, is the publish/observable link, ie. the loading property which is marked #Published is changed once the data is returned, the view that has the ActivityIndicatorView and #ObservedObject ServiceManager that should update its view and is not, somehow broken or do I have to initialize ActivityIndicatorView a certain way because it is used multiple times?