Credential Provider Extension UI Appears Only on Second “Continue” Tap

Question

Created Apr ’25

Replies 1

Boosts 1

Participants 2

I’m having an issue with my Credential Provider Extension for passkey registration. On the browser I click on registration, in IOS i can select my App for passkey registration with a continue button. Wenn I click the continue button the prepareInterface(forPasskeyRegistration:) function is called but the MainInterface is not shown —it only appears when I click the continue button a second time.

Here’s a simplified version of my prepareInterface method:

override func prepareInterface(forPasskeyRegistration registrationRequest: ASCredentialRequest) {
    guard let request = registrationRequest as? ASPasskeyCredentialRequest,
          let identity = request.credentialIdentity as? ASPasskeyCredentialIdentity else {
        extensionContext.cancelRequest(withError: ASExtensionError(.failed))
        return
    }
    self.identity = identity
    self.request = request
    log.info("prepareInterface called successfully")
}

In viewDidAppear, I trigger FaceID authentication and complete the registration process if register is true. However, the UI only shows after a second “Continue” tap.

Has anyone encountered this behavior or have suggestions on how to ensure the UI appears immediately after prepareInterface is called? Could it be a timing or lifecycle issue with the extension context?

Thanks for any insights!

Boost

Answer 1

Systems Engineer OP

Apple

Apr ’25

One possible cause of an issue like this is not setting the view up correctly in the normal view lifecycle methods. I would take a look at how you're setting things up in methods like viewDidLoad() and viewDidAppear(), making sure you have drawn something and are calling the super versions of those methods.

0