Allegory is a library built to resemble SwiftUI as much as possible built on top of UIKit for use on iOS versions starting from iOS 10.

See Progress

Allegory is designed to be almost identical to SwiftUI, except that the body of your views returns SomeView instead of some View.

struct Counter: View {
    @State var count: Int
    let limit: Int

    var body: SomeView {
        if count < limit {
            VStack {
                Button("Increment") { count  = 1 }
                Text("\(count)")
            }
            // Not yet implemented
            // .onAppear { print("Counter.VStack onAppear") }
            // .onDisappear { print("Counter.VStack onDisappear") }
        } else {
            VStack { Text("Limit exceeded") }
        }
    }
}

@main
struct CounterApp: App {
    var body: SomeScene {
        WindowGroup("Counter Demo") {
            Counter(count: 5, limit: 15)
        }
    }
}

Add the following line to your Podfile:

pod 'Allegory', '~> 0.0.2'

In Xcode 12.3 go to File -> Swift Packages -> Add Package Dependency and enter there URL of this repo

https://github.com/mgray88/Allegory

Allegory is a highly dynamic work in progress. Much of it is not ready for use.

• Twitter: @MikeMgray88

Many, many thanks to these other open source projects and resources that have inspired and provided insight on the inner workings of SwiftUI

• Mockingbird and MockingbirdUIKit
• RxSwiftWidgets
• UIKitPlus
• Tokamak
• SwiftUI Layout Explained @ objc.io
• SwiftUI State Explained @ objc.io

SwiftUI is a trademark owned by Apple Inc. Software maintained as a part of the Allegory project is not affiliated with Apple Inc.

Allegory is available under the MIT license. See LICENSE for more info.