preAuthorizeDiagnosisKeys(completionHandler:)

Allows users to authorize a one-time release of diagnosis keys within five days of the authorization.

Declaration

func preAuthorizeDiagnosisKeys(completionHandler: @escaping  @Sendable ((any Error)?) -> Void)

func preAuthorizeDiagnosisKeys() async throws

Parameters

completionHandler:
The completion handler the framework calls when the method completes.

Discussion

important:

You can call this method from synchronous code using a completion handler, as shown on this page, or you can call it as an asynchronous method that has the following declaration:

func preAuthorizeDiagnosisKeys() async throws

For information about concurrency and asynchronous code in Swift, see Calling Objective-C APIs Asynchronously.

This method prompts the user when getting tested to share their diagnosis keys if they receive a positive test result. An app should only call this method if it has a way to determine that the user is about to take a COVID test, such as apps that allow users to schedule testing appointments, and that can also determine if the result is positive.

The authorization duration is five days.