How to Display Specific Payment Methods on Storefront?

                                 

xml version="1.0"?>

<config xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:noNamespaceSchemaLocation="urn:magento:module:Magento_Config:etc/system_file.xsd">
    <system>
         
        <section id="mageacademy_paymentmethods" translate="label" type="text" sortOrder="-5000" showInDefault="1" showInWebsite="1"
                 showInStore="1">
            <label>label>
            <tab>ffctab>
            <resource>MageAcademy_Checkout::configresource>
            <group id="general" sortOrder="10" translate="label" type="text" showInDefault="1" showInWebsite="1" showInStore="1">
                <label>General Settingslabel>
                <field id="payment_gateway" type="multiselect" translate="label" sortOrder="10" showInDefault="1" showInStore="1" showInWebsite="1">
                    <label>Select Payment Gatewaylabel>
                    <comment>comment>
                    <source_model>MageAcademy\Checkout\Model\System\Config\Backend\PaymentMethodsource_model>
                field>
            group>
        section>
     system>
config>

Now Create PaymentMethod.php file under MageAcademy\Checkout\Model\System\Config\Backend Folder

namespace MageAcademy\Checkout\Model\System\Config\Backend;

use Magento\Vault\Model\PaymentMethodList;
use Magento\Store\Model\StoreManagerInterface;

/**
 * Payment Method options
 */
class PaymentMethod implements \Magento\Framework\Option\ArrayInterface
{
    /**
     * @var PaymentMethodList
     */
    private $vaultMethod;

    /**
     * @var StoreManagerInterface
     */
    private $storeManager;

    /**
     * PaymentMethod constructor.
     * @param PaymentMethodList $vaultMethod
     * @param StoreManagerInterface $storeManager
     */
    public function __construct(
        PaymentMethodList $vaultMethod,
        StoreManagerInterface $storeManager
    ) {
        $this->vaultMethod = $vaultMethod;
        $this->storeManager = $storeManager;
    }
    /**
     * Return array of payment method.
     *
     * @return array
     */
    public function toOptionArray()
    {
        $storeId = $this->storeManager->getStore()->getId();
        $collections = $this->vaultMethod->getActiveList($storeId);

        $methods = [
            ['value' => 'cashondelivery', 'label' => __('Cash On Delivery')],
            ['value' => 'paypal', 'label' => __('Paypal')],             
        ];
        foreach ($collections as $collection) {
            if ($collection->getTitle()) {
                $methods[] = ['value' => $collection->getCode(), 'label' => __($collection->getTitle())];
            }
        }
        return $methods;
    }
}//end class

Here I have listed out my enabled payment methods code and title, In value you have to use

your payment method code.

Now you need to create a Helper and put below funtion to get configuration data

/**
 * @param $code
 * @param null $storeId
 * @return mixed
 */
public function getAllowedPaymentMethods()
{
    return explode(',', $this->getConfigValue(self::XML_PATH_PAYMENT_GATEWAY));
}

Now create event.xml under MageAcademy\Checkout\etc folder and put below code

<event name="payment_method_is_active">
    <observer name="storefront_restrict_payment_method" 

instance="MageAcademy\Checkout\Observer\PaymentMethodStoreFront" />
event>

Now create Observer PaymentMethodStoreFront.php and put below code

 
public function execute(\Magento\Framework\Event\Observer $observer)
{ 
    $quote = $observer->getData('quote');

    
    if ($quote->getGrandTotal() <= 0) {

        return $this;
     }

    $paymentModel = $observer->getEvent()->getMethodInstance();

    $allowdPaymentMethods = $this->helper->getAllowedPaymentMethods();

    if (!in_array($paymentModel->getCode(), $allowdPaymentMethods)) {
        $checkResult = $observer->getEvent()->getResult();
        $checkResult->setData('is_available', false);
        return $this;
    }

 return $this;
}

So by this way you can achieve to display payment methods on storefront as per your choice

and display all payment methods on admin.

Hope this solution will work for you.

Happy Coding and keep visiting.