> For the complete documentation index, see [llms.txt](https://docs.caf.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.caf.io/sdk-lite/sdk-lite-english-pt-br/configuracao/ios/source-code.md).

# Código-fonte

```swift
import UIKit
import CafFaceLivenessLite

final class MainViewController: UIViewController {
    private let sdk = CafFaceLivenessLiteSDK(enableSecurity: true)

    override func viewDidLoad() {
        super.viewDidLoad()
        sdk.delegate = self

        sdk.setup(
            mobileToken: "mobileToken",
            personId: "personId",
            customLocalization: nil,
            customLocalizationBundle: nil,
            environment: .prod,
            loading: true
        )
        // Opcional: sobreponha a solicitação da sessão com o que o usuário fizer em seguida
        sdk.prewarm()

        let startButton = UIButton(type: .system)
        startButton.setTitle("Iniciar Liveness Lite", for: .normal)
        startButton.addTarget(self, action: #selector(startLivenessLite), for: .touchUpInside)
        view.addSubview(startButton)
        // Layout omitido
    }

    @objc private func startLivenessLite() {
        sdk.startSDK(viewController: self)
    }
}

extension MainViewController: CafFaceLivenessLiteDelegate {
    func didFinishWithSuccess(livenessResult: CafFaceLivenessLiteResult) {
        // JWT opaco da rota assíncrona — resolva o resultado final no seu backend
        print("Sucesso: \(livenessResult.signedResponse ?? \"-\")")
    }

    func didFinishWithFailure(type: CafFailureType, description: String?, signedResponse: String?) {
        print("Falha: type=\(type) desc=\(description ?? \"-\") signed=\(signedResponse ?? \"-\")")
    }

    func didFinishWithError(type: CafErrorType, description: String) {
        print("Erro: type=\(type) desc=\(description)")
    }

    func cancelled() { print("Cancelado") }
    func loading() { print("Carregando") }
    func loaded() { print("Carregado") }
}
```


---

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