In SwiftUI, managing lifecycle events such as when a view appears or disappears is essential for updating data or performing tasks accordingly. You can use the `onAppear` and `onDisappear` modifiers to handle these events. Below is an example of how to respond to lifecycle events in a SwiftUI application.
import SwiftUI
struct ContentView: View {
@State private var message: String = "Hello, World!"
var body: some View {
Text(message)
.onAppear {
print("View appeared")
message = "Welcome to SwiftUI!"
}
.onDisappear {
print("View disappeared")
message = "Goodbye!"
}
}
}
struct ContentView_Previews: PreviewProvider {
static var previews: some View {
ContentView()
}
}
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