> For the complete documentation index, see [llms.txt](https://docs.payments.thalescloud.io/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.payments.thalescloud.io/nfc-wallet-sdk-android/es/get-started/configuration/5.-push-notifications/configure-push-provider.md).

# Configurar proveedor de push

## Configurar FCM

Sigue la guía de Google: [Configurar una aplicación cliente FCM en Android](https://firebase.google.com/docs/cloud-messaging/android/client).

A grandes rasgos:

1. Crea un proyecto de Firebase y registra tu aplicación Android.
2. Añade Firebase a tu proyecto Android.
3. Implementa un servicio que extienda `FirebaseMessagingService`:
   1. Sobrescribe `onNewToken` para soportar la actualización del token push
   2. Sobrescribe `onMessageReceived` para gestionar la notificación push desde el backend de NFC Wallet.
4. Declara el servicio en el manifiesto de tu aplicación.

{% code title="FcmService.java" expandable="true" %}

```java
public class FcmService extends FirebaseMessagingService {

    @Override
    public void onNewToken(@NonNull final String token) {
        super.onNewToken(token);

        // Notifica al SDK de NFC Wallet sobre el nuevo token.
        updateToken(this, token);
    }

    @Override
    public void onMessageReceived(@NonNull final RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);

        // Envía la carga útil del push a tu manejador común.
        processIncomingMessage(this, remoteMessage.getData());
    }
}
```

{% endcode %}

## Configurar HMS Push Kit

Para dispositivos Huawei sin los servicios de Google Play, configura HMS Push Kit.

Sigue la guía de Huawei: [HMS Push Kit (Android) Codelabs](https://developer.huawei.com/consumer/en/codelab/HMSPushKit).

{% hint style="warning" %}
Para enrutar los mensajes correctamente, antepone a los tokens HMS `HMS:`.
{% endhint %}

A grandes rasgos:

1. Habilita Push Kit para tu aplicación en [AppGallery Connect](https://developer.huawei.com/consumer/en/service/josp/agc/index.html).
2. Integra el SDK de HMS Core en tu **aplicación de billetera digital**.
3. Implementa un servicio que extienda `HmsMessageService`:
   1. Sobrescribe `onNewToken` para soportar la actualización del token push
   2. Sobrescribe `onMessageReceived` para gestionar la notificación push desde el backend de NFC Wallet..
4. Declara el servicio en el manifiesto de tu aplicación.

{% code title="HmsService.java" expandable="true" %}

```java
public class HmsService extends HmsMessageService {

    // Usa el prefijo "HMS:" para el token de HMS Push Kit
    private static final String HMS_TOKEN_PREFIX = "HMS:";

    @Override
    public void onNewToken(final @NonNull String token) {
        super.onNewToken(token);

        // Notifica al SDK de NFC Wallet sobre el nuevo token.
        updateToken(this, HMS_TOKEN_PREFIX + token);
    }

    @Override
    public void onMessageReceived(@NonNull final RemoteMessage remoteMessage) {
        super.onMessageReceived(remoteMessage);

        // Envía la carga útil del push a tu manejador común.
        processIncomingMessage(this, remoteMessage.getDataOfMap());
    }
}
```

{% endcode %}


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