Android check for fingerprint scanner is available [duplicate]

Question

If fingerprint scanner is available let user use my apps feature by authenticating with fingerprint.

Answer 1

Try this code:

FingerprintManager fingerprintManager = (FingerprintManager) context.getSystemService(Context.FINGERPRINT_SERVICE);
if (!fingerprintManager.isHardwareDetected()) { 
    // Device doesn't support fingerprint authentication     
} else if (!fingerprintManager.hasEnrolledFingerprints()) { 
    // User hasn't enrolled any fingerprints to authenticate with 
} else { 
    // Everything is ready for fingerprint authentication 
}