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How to detect the removal fingerprint in Android?

2019-08-17 08:55发布

问题:

I am currently doing research on Android fingerprint API.

As I have cloned the fingerprint sample, 'FingerprintDialog' https://github.com/googlesamples/android-FingerprintDialog

There is a mechanism for checking if new fingerprint is added to the device and ask for password instead of fingerprint once after the addition of new fingerprint.

However, I cannot find any material online about detecting the removal of fingerprint in the App. As the result, I would like to know if there is any method that I can detect the removal of fingerprint in my App.

Thank you all in advance.