Using disclosure groups to hide and show content

DisclosureGroup is a view that's used to show or hide content based on the state of a disclosure control. It takes two parameters: a label to identify its content and a binding that controls whether the content is visible or hidden. Let's take a closer look at how it works by creating an app that shows and hides content in a disclosure group.

Getting ready

Create a new SwiftUI project and name it DisclosureGroups.

How to do it…

We will create an app that uses the DisclosureGroup view to view some planets in our solar system, continents on Earth, and some surprise text. The steps are as follows:

1. Below the ContentView struct, add a state property called showplanets:

   struct ContentView: View {
     @State private var showplanets = true
     // the rest of the content here
   }

2. Replace the Text view in the body struct with a VStack and a DisclosureGroup view that contains two Text views...