@Override
    public void onAuthenticationSucceeded(FingerprintManager.AuthenticationResult result) {
        mErrorTextView.removeCallbacks(mResetErrorTextRunnable);
        mIcon.setImageResource(R.drawable.ic_fingerprint_success);
        mErrorTextView.setTextColor(
                mErrorTextView.getResources().getColor(R.color.success_color, null));
        mErrorTextView.setText(
                mErrorTextView.getResources().getString(R.string.pin_code_fingerprint_success));
        mIcon.postDelayed(new Runnable() {
            @Override
            public void run() {
                mCallback.onAuthenticated();
            }
        }, SUCCESS_DELAY_MILLIS);
    }
Called by {@link FingerprintManager} if the authentication succeeded.
lib/src/main/java/com/github/omadahealth/lollipin/lib/managers/FingerprintUiHelper.java