Iltwats

private void qrGeneration(String qrText) {
        QRCodeWriter writer = new QRCodeWriter();
        try {
            BitMatrix bitMatrix = writer.encode(qrText, BarcodeFormat.QR_CODE, 564, 564);
            int width = bitMatrix.getWidth();
            int height = bitMatrix.getHeight();
            Bitmap bmp = Bitmap.createBitmap(width, height, Bitmap.Config.RGB_565);
            for (int x = 0; x < width; x++) {
                for (int y = 0; y < height; y++) {

Iltwats

 BiometricPrompt.PromptInfo promptInfo = new BiometricPrompt.PromptInfo.Builder()
                .setTitle(getString(R.string.biometric_title))
                .setSubtitle(getString(R.string.biometric_subtitle))
                .setDescription(getString(R.string.biometric_desc))
                .setAllowedAuthenticators(BiometricManager.Authenticators.BIOMETRIC_WEAK | BiometricManager.Authenticators.DEVICE_CREDENTIAL)
                .setConfirmationRequired(false)
                .build();

Iltwats

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

Iltwats

BiometricManager biometricManager = BiometricManager.from(this);
        switch (biometricManager.canAuthenticate(BiometricManager.Authenticators.BIOMETRIC_WEAK | BiometricManager.Authenticators.DEVICE_CREDENTIAL)) {
            case BiometricManager.BIOMETRIC_SUCCESS:
                Log.d("MY_APP_TAG", "App can authenticate using biometrics.");
                break;
            case BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE:
                Log.e("MY_APP_TAG", "No biometric features available on this device.");
                b.biometricCardView.setVisibility(View.GONE);
                break;
            case BiometricManager.BIOMETRIC_ERROR_HW_UNAVAILABLE:

Iltwats

 private void biometricPromptDialog() {
        BiometricManager biometricManager = BiometricManager.from(this);
        switch (biometricManager.canAuthenticate(BiometricManager.Authenticators.BIOMETRIC_WEAK | BiometricManager.Authenticators.DEVICE_CREDENTIAL)) {
            case BiometricManager.BIOMETRIC_SUCCESS:
                Log.d("MY_APP_TAG", "App can authenticate using biometrics.");
                break;
            case BiometricManager.BIOMETRIC_ERROR_NO_HARDWARE:
                Log.e("MY_APP_TAG", "No biometric features available on this device.");
                b.biometricCardView.setVisibility(View.GONE);
                break;