How to use

FingerPrintAuthHelper

in

com.multidots.fingerprintauth

@Override
protected void onPause() {
  super.onPause();
  mFingerPrintAuthHelper.stopAuth();
}

/**
 * Get the {@link FingerPrintAuthHelper}
 *
 * @param context  instance of the caller.
 * @param callback {@link FingerPrintAuthCallback} to get notify whenever authentication success/fails.
 * @return {@link FingerPrintAuthHelper}
 */
@SuppressWarnings("ConstantConditions")
public static FingerPrintAuthHelper getHelper(@NonNull Context context, @NonNull FingerPrintAuthCallback callback) {
  if (context == null) {
    throw new IllegalArgumentException("Context cannot be null.");
  } else if (callback == null) {
    throw new IllegalArgumentException("FingerPrintAuthCallback cannot be null.");
  }
  return new FingerPrintAuthHelper(context, callback);
}

@TargetApi(23)
@Nullable
private FingerprintManager.CryptoObject getCryptoObject() {
  return cipherInit() ? new FingerprintManager.CryptoObject(mCipher) : null;
}

if (isScanning) stopAuth();
if (!checkFingerPrintAvailability(mContext)) return;
FingerprintManager.CryptoObject cryptoObject = getCryptoObject();
if (cryptoObject == null) {
  mCallback.onAuthFailed(AuthErrorCodes.NON_RECOVERABLE_ERROR, ERROR_FAILED_TO_INIT_CHIPPER);

@Override
protected void onResume() {
  super.onResume();
  mGoToSettingsBtn.setVisibility(View.GONE);
  mAuthMsgTv.setText("Scan your finger");
  //start finger print authentication
  mFingerPrintAuthHelper.startAuth();
}

boolean isKeyGenerated = generateKey();

mFingerPrintAuthHelper = FingerPrintAuthHelper.getHelper(this, this);