Call cancellation handler in each fingerpringmanager callback method

[kmagiera]

Not calling cancellation signal in some cases leads to android to releasing the fingerprint manager properly, which on the other hand causes the fingerprint to fail immediately on a subsequent attempt. See this SO question for more details: https://stackoverflow.com/questions/45136354/fingerprint-operation-cancelled-while-using-in-app-authentication

[zibs]

@kmagiera thanks! Will take a look and merge asap!

[rodan-lewarx]

Does this solve the same issue as #81 ?

[zibs]

Thanks a lot for this suggestion @kmagiera. I've opened with #92 as a fix including this one and a fix for #81.

This branch actually died on me each time I used it, but I've implemented a very similar logic in my branch which works for me.

Take a look over there and see if that still works for you.