Configure push provider

Set up FCM

Follow Google’s guide: Setting up a FCM client app on Android.

At a high level:

1. Create a Firebase project and register your Android application.
2. Add Firebase to your Android project.
3. Implement a service extending FirebaseMessagingService:

   1. Override onNewToken to support the push token update
   2. Override onMessageReceived to handle push notification from NFC Wallet backend.
4. Declare the service in your application manifest.

FcmService.java

public class FcmService extends FirebaseMessagingService {

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

        // Notify the NFC Wallet SDK about the new token.
        updateToken(this, token);
    }

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

        // Route the push payload to your common handler.
        processIncomingMessage(this, remoteMessage.getData());
    }
}

Set up HMS Push Kit

For Huawei devices without Google Play services, configure HMS Push Kit.

Follow Huawei’s guide: HMS Push Kit (Android) Codelabs.

To route messages correctly, prefix HMS tokens with HMS:.

At a high level:

1. Enable Push Kit for your application in AppGallery Connect.
2. Integrate HMS Core SDK into your digital wallet application.
3. Implement a service extending HmsMessageService:

   1. Override onNewToken to support the push token update
   2. Override onMessageReceived to handle push notification from NFC Wallet backend..
4. Declare the service in your application manifest.

HmsService.java

public class HmsService extends HmsMessageService {

    // Use "HMS:" prefix for HMS Push Kit token
    private static final String HMS_TOKEN_PREFIX = "HMS:";

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

        // Notify the NFC Wallet SDK about the new token.
        updateToken(this, HMS_TOKEN_PREFIX + token);
    }

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

        // Route the push payload to your common handler.
        processIncomingMessage(this, remoteMessage.getDataOfMap());
    }
}