I am working on a program that has a security function including a PIN and a fingerprint, but now I'm having a problem with entering the password (PIN or Fingerprint). Incorporating the correct fingerprints is fine, but when I enter the PIN code, after I exit the PIN and fingerprint activity, the machine continues to listen for fingerprints, I know this because when I click on the "home" button "The machine still vibrates slightly, so there is no way to stop listening to fingerprints?
2 Answers
You can cancel the Finger scan listener by using the CancellationSignal object. Check below code:
private CancellationSignal cancellationSignal;
...
...
public void startFingerAuth(FingerprintManager manager, FingerprintManager.CryptoObject cryptoObject) {
if (ActivityCompat.checkSelfPermission(context, Manifest.permission.USE_FINGERPRINT)
!= PackageManager.PERMISSION_GRANTED) {
return;
}
cancellationSignal = new CancellationSignal();
manager.authenticate(cryptoObject, cancellationSignal, 0, this, null);
}
public void stopFingerAuth(){
if(cancellationSignal != null && !cancellationSignal.isCanceled()){
cancellationSignal.cancel();
}
}
You have to call this method stopFingerAuth() in your activity or fragment.
Related