@Override
    protected void onActivityResult(int requestCode, int resultCode, @Nullable Intent data) {
        if (requestCode == RaveConstants.RAVE_REQUEST_CODE && data != null) {
            String message = data.getStringExtra("response");
            //Handle the payment depending on the status
            if (resultCode == RavePayActivity.RESULT_SUCCESS) {
                Toast.makeText(this, "Payment successful", Toast.LENGTH_SHORT).show();
                checkoutButton.setText("Bought");
                checkoutButton.setBackgroundColor(getResources().getColor(R.color.colorPrimary));
                checkoutButton.setOnClickListener(new View.OnClickListener() {
                    @Override
                    public void onClick(View v) {
                        Toast.makeText(ProductDetailsActivity.this,
                                "You have already made payment",
                                Toast.LENGTH_SHORT).show();
                    }
                });
            } else if (resultCode == RavePayActivity.RESULT_ERROR) {
                Toast.makeText(this,
                        "There was an error processing your payment. Please try again.",
                        Toast.LENGTH_SHORT).show();
            } else if (resultCode == RavePayActivity.RESULT_CANCELLED) {
                Toast.makeText(this, "Payment cancelled ", Toast.LENGTH_SHORT).show();
            }
        } else {
            super.onActivityResult(requestCode, resultCode, data);
        }
    }