Understanding the state

In SwiftUI, a state is a piece of data that can change. When the state changes, the view that depends on the state is automatically refreshed.

You can declare a state in a SwiftUI view by using the @State property wrapper. For example, see the following:

struct ContentView: View {
    @State private var name: String = "Bella"
}

Here, name is a state that is stored as a string. You can then use this state to display dynamic content in your view:

struct ContentView: View {
    @State private var name: String = "Bella"
    var body: some View {
        Text("Hello, \(name)")
    }
}

To change the state, we can assign a new value to the @State property. For example, see the following:

struct ContentView: View {
    @State private var name: String = "Bella"
  ...