public void OnCloseFingerprintReader(BiometricsResultCode resultCode,
                                                 BiometricsCloseReasonCode closeReasonCode)
            {
                if (BiometricsResultCode.Ok == resultCode)
                {
                    mStatusTextView.Text = ("Fingerprint Closed: " + closeReasonCode);
                }

                /* Now that sensor is closed, if user presses "mOpenCloseButton" fingerprint
                 * sensor should now open. To achieve this we change flag which controls
                 * what action mOpenCloseButton takes.
                 */
                mOpenFingerprint = true;

                /* Change text back to "Open" and allow button to be clickable. */
                mOpenCloseButton.SetText(Resource.String.open);
                mOpenCloseButton.Enabled = true;
                /* Since sensor is closed, user should NOT be able to press capture or match. */
                mCaptureButton.Enabled = false;
                mMatchButton.Enabled   = false;
            }
 public void OnCloseFingerprintReader(BiometricsResultCode resultCode,
                                      BiometricsCloseReasonCode closeReasonCode)
 {
     /* This case is already handled by "mFingerprintOpenCloseListener". */
 }