Step2BA.java

Executor executor = ContextCompat.getMainExecutor(this);

        BiometricPrompt biometricPrompt = new BiometricPrompt(this, executor, new BiometricPrompt.AuthenticationCallback() {
            @Override
            public void onAuthenticationError(int errorCode, @NonNull CharSequence errString) {
                super.onAuthenticationError(errorCode, errString);
                viewEditAndSave();
            }

            @Override
            public void onAuthenticationSucceeded(@NonNull BiometricPrompt.AuthenticationResult result) {
                authComplete = true;
                viewEditAndSave();
                super.onAuthenticationSucceeded(result);
            }

            @Override
            public void onAuthenticationFailed() {
                super.onAuthenticationFailed();
            }
        });