App Login feature for native iOS Runtime SDK

Question

There is a way to authenticate on behalf of User using App Login Rest API Implementing App Login | ArcGIS for Developers but is it available for using with Runtime SDK? Documentation suggest to use AGSAuthenticationManager class for that: “

* Client credentials: registration requires a client ID, client secret, and a redirect URL. The user does not need to enter a login, but rather is granted access on behalf of the app.”

... but there is no any way to provide client secret for the AGSAuthentication manager class methods either in Documentation or header files of ObjC library.

So the question is how to implement App Login using native iOS SDK instead of using Rest API?

NFurness · Accepted Answer

Out of the box we don't provide a component to do this, but it's very easy to create one and then hook into AGSAuthenticationManager's challengeHandler pattern to provide App Login tokens as needed.

See this conversation on GitHub and the sample Gist code that goes with it.