How to run function when "viewDidLoad" is called while using SwiftUI

Question

I'm trying to run a function when the app finish loading up, like viewDidLoad, but I'm using SwiftUI now and I have no viewDidLoad. How can I do this now?

var body: some View {
    NavigationView {
        Form {
            Section {
                self.exampleFunction()

                Text(" ......  ")
            }
        }
    }
}

I want to take some information from that function and present it in the text. But the way I'm doing it is wrong. It's not building.

Answer 1

You can use .onAppear { ... } to execute arbitrary code when a view appears:

var body: some View {
        NavigationView {
            Form {
                Section {
                    Text(" ......  ")
                }.onAppear { self.exampleFunction() }