> 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/caf-sdk/caf-sdk-pt-br/ios/standalone-modules/caffaceliveness/lifecycle.md).

# Ciclo de vida do SDK

## CafFaceLivenessDelegate

O `CafFaceLivenessDelegate` o protocolo trata eventos-chave durante o processo de detecção de vivacidade do SDK:

| Evento                                                    | Descrição                                                                                   |
| --------------------------------------------------------- | ------------------------------------------------------------------------------------------- |
| `cancelled()`                                             | Disparado quando o usuário cancela o processo.                                              |
| `didFinishWithError(sdkFailure: CafSDKFailure)`           | Chamado em caso de falha do SDK, com detalhes do erro fornecidos em `sdkFailure`.           |
| `loaded()`                                                | Disparado quando o SDK está pronto, se a tela de carregamento estiver desativada.           |
| `loading()`                                               | Indica que o SDK está inicializando, chamado se nenhuma tela de carregamento for exibida.   |
| `didFinishWithSuccess(livenessResult: CafLivenessResult)` | Chamado após uma detecção bem-sucedida, com o resultado em `livenessResult.signedResponse`. |

### Exemplo

```swift
extension YourViewController: CafFaceLivenessDelegate {
    func didFinishWithSuccess(livenessResult: CafLivenessResult) {
        print("Sucesso: \(livenessResult.signedResponse ?? "Sem resposta")")
    }

    func cancelled() {
        print("Detecção de vivacidade cancelada")
    }

    func didFinishWithError(sdkFailure: CafSDKFailure) {
        print("Erro: \(sdkFailure.description ?? "Erro desconhecido")")
    }

    func loading() {
        print("Detecção de vivacidade carregando")
    }

    func loaded() {
        print("Detecção de vivacidade carregada")
    }
}
```


---

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