handle App Url
A method your app can optionally call to bring the challenge UI to the foreground. That’s useful when the user is returning from their banking app (when they call your appUrl) as part of an out-of-band challenge.
Return
true if an active authentication session is found, or will otherwise return false.
Parameters
activity
The Activity class that received the Intent containing the appUrl.
appUrl
The Uri contained in the Intent.data field, provided to the app by an app that handles out-of-band authentication.