DEV Community

loading...

@Appstorage in SwiftUI

Thomas Prezioso Jr.
iOS Developer
・2 min read

Appstorage is a property wrapper for getting stored values from UserDefaults in SwiftUI. We use @Appstorage too reload our body view property whenever the value changes of our UserDefaults. This keeps our view up to date with the data that we have stored. Let's take a look at an example on how we can use @Appstorage in our SwiftUI project.

import SwiftUI

struct ContentView: View {
    @AppStorage("isCookieTime") var isCookieTime = false
    
    var body: some View {
            Toggle("Cookie time", isOn: $isCookieTime)
        .padding()
    }
}

In the example above we have a Toggle view for "Cookie time" 🍪. We use our @AppStorage property to watch our isCookieTime variable. If the value changes it is then stored in our UserDefaults. Now our toggle will show the stored value depending on the @AppStorage.

A example of where I use @AppStorage is for storing things like a users settings options in a settings screen of an app. I hope this helps explain how to use @AppStorage in SwiftUI.

Thanks for reading and happy coding.

Discussion (0)

Forem Open with the Forem app