Have The Lock Screen's Fingerprint Sensor Listen For Fingerprints Whilst In The Background, Android

I have an Android application that has one feature which includes showing some content on a view when you unlock your screen after having locked it earlier, and like such it shows

Solution 1:

You could create a BroadcastReceiver on this action ACTION_USER_PRESENT

Broadcast Action: Sent when the user is present after device wakes up (e.g when the keyguard is gone).

This Intent is sent when keyguard (lockscreen) is gone. It's not specific to Fingerprint lockscreen.