メッセージ処理

This section is only applicable for NFC Wallet.

Process a push notification

When receiving a push notification, the issuer application shall provide the notification to D1 SDK using D1Task.processNotification().

Message types and payloads

The SDK processes the push message, returns data contains PushResponseKey.MESSAGE_TYPE, PushResponseKey.CARD_ID or PushResponseKey.LAST_CALL_TIMESTAMP. The following table shows the possible message type and corresponding payloads:

Message Type

Card ID

Last Call Timestamp

Comments

PushResponseKey.TYPE_CARD_STATE

Yes

PushResponseKey.TYPE_REPLENISHMENT

Yes

PushResponseKey.TYPE_TRANSACTION_NOTIFICATION

Yes

PushResponseKey.TYPE_AUTHN

PushResponseKey.TYPE_CARD_RENEWAL

Message received after a successful card renewal. To reflect the new card ID, a resynchronisation of the card ID is required. For more details, refer to Card Renewal.

PushResponseKey.TYPE_MESSAGING (iOS) PushResponseKey.TYPE_MESSAGE_NOTIFICATION (Android)

Yes

PushResponseKey.TYPE_UNKNOWN

Message for the application.

Examples

public class D1PayFirebaseService extends FirebaseMessagingService {
    private D1Task d1Task = null;

    @Override
    public void onMessageReceived(@NonNull RemoteMessage remoteMessage) {
        if (d1Task == null) {
            d1Task = new D1Task.Builder()
                    .setContext(getApplicationContext())
                    .build();
        }

        // if 3DS feature is enabled, create d1Authn instance before proccessing the pushNotification with the same d1Task instance that is used to 'processNotification'
        // it is required to display prompt with an activity if it is a push that requests for d1Authn authentication
        // Application interaction is required during the processing to display promts to end user.
        D1Authn d1Authn = d1Task.getD1Authn(activity, new AuthnCallback(){
           
            @Override
            public void onTransactionDataConfirmation(@NunNull Map<String, String> map, @NonNull AuthnUserConfirmationCallback authnUserConfirmationCallback){
              // The 'map' contains the transaction data that is to be authenticated. 
              // Application to display the content, prompt end uer either to 'proceed' or to 'deny' the authentication request.
              
              // To proceed: when uer selects proceed
              // once proceed, UI will be prompted for authentication based on the selected AuthnType enrolled.
              authnUserConfirmationCallback.proceed();

              // To cancel: when user selects cancel
              authnUserConfirmationCallback.cancel();
            }

            @Override
            public onBiometricPromptMessage(){
              // Provide a message prompt for the authentication prompt. Application can customize the value.
              return "Message to be displayed to the user during biometric prompt";
            }
        
        });
        

        d1Task.processNotification(remoteMessage.getData(), new D1Task.Callback<String>() {
            @Override
            public void onSuccess(@Nullable String d1CardID) {
                // Proceed with subsequent flows
            }

            @Override
            public void onError(@NonNull D1Exception exception) {
                // Refer to D1 SDK Integration – Error Management section
            }
        });

        // Other application logic ...
    }

    // ...
}

extension AppDelegate {
    func application(
        _ application: UIApplication,
        didReceiveRemoteNotification userInfo: [AnyHashable : Any],
        fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void
    ) {
        if let userInfo = userInfo as? [String: Any] {
            d1Task.processNotification(userInfo) { response, error in
                guard error == nil else {
                    // Refer to D1 SDK Integration – Error Management section.
                    completionHandler(.noData)
                    return
                }
                
                guard let response = response, let type = response[PushResponse.Key.messageType] else {
                    completionHandler(.noData)
                    return
                }

                guard type != PushResponse.typeUnknown else {
                    // The notification is not recognized by the SDK.
                    completionHandler(.noData)
                    return
                }

                guard type == PushResponse.typeMessaging,
                      let id = response[PushResponse.Key.messageID],
                      let message = Message.message(withID: id) else {
                    completionHandler(.noData)
                    return
                }

                let content = UNMutableNotificationContent()
                // Constructs the notification based on message
                content.title = message.title ?? "Notification"
                content.body = message.message ?? ""
                content.targetContentIdentifier = message.action.

                // Shows the notification to the end user.
                let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 1, repeats: false)
                let request  = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger)
                UNUserNotificationCenter.current().add(request) { error in }
                completionHandler(.newData)
            }
        } else {
            completionHandler(.noData)
        }
    }
}

For Android, apps targeting API level 33 must handle runtime notification permission. For details, see Notification runtime permission.

Notification filtering

Internally, D1 SDK processes the notification with the following key value pairs. The application may filter based on these values and only pass such notifications to the SDK.

Key

Value

sender

CPS

sender

MG

sender

TNS

topic

D1_NOTIFICATION

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public class D1PayFirebaseService extends FirebaseMessagingService {
    private D1Task d1Task = null;

    @Override
    public void onMessageReceived(@NonNull RemoteMessage remoteMessage) {
        if (d1Task == null) {
            d1Task = new D1Task.Builder()
                    .setContext(getApplicationContext())
                    .build();
        }

        // if 3DS feature is enabled, create d1Authn instance before proccessing the pushNotification with the same d1Task instance that is used to 'processNotification'
        // it is required to display prompt with an activity if it is a push that requests for d1Authn authentication
        // Application interaction is required during the processing to display promts to end user.
        D1Authn d1Authn = d1Task.getD1Authn(activity, new AuthnCallback(){
           
            @Override
            public void onTransactionDataConfirmation(@NunNull Map<String, String> map, @NonNull AuthnUserConfirmationCallback authnUserConfirmationCallback){
              // The 'map' contains the transaction data that is to be authenticated. 
              // Application to display the content, prompt end uer either to 'proceed' or to 'deny' the authentication request.
              
              // To proceed: when uer selects proceed
              // once proceed, UI will be prompted for authentication based on the selected AuthnType enrolled.
              authnUserConfirmationCallback.proceed();

              // To cancel: when user selects cancel
              authnUserConfirmationCallback.cancel();
            }

            @Override
            public onBiometricPromptMessage(){
              // Provide a message prompt for the authentication prompt. Application can customize the value.
              return "Message to be displayed to the user during biometric prompt";
            }
        
        });
        

        d1Task.processNotification(remoteMessage.getData(), new D1Task.Callback<String>() {
            @Override
            public void onSuccess(@Nullable String d1CardID) {
                // Proceed with subsequent flows
            }

            @Override
            public void onError(@NonNull D1Exception exception) {
                // Refer to D1 SDK Integration – Error Management section
            }
        });

        // Other application logic ...
    }

    // ...
}

extension AppDelegate {
    func application(
        _ application: UIApplication,
        didReceiveRemoteNotification userInfo: [AnyHashable : Any],
        fetchCompletionHandler completionHandler: @escaping (UIBackgroundFetchResult) -> Void
    ) {
        if let userInfo = userInfo as? [String: Any] {
            d1Task.processNotification(userInfo) { response, error in
                guard error == nil else {
                    // Refer to D1 SDK Integration – Error Management section.
                    completionHandler(.noData)
                    return
                }
                
                guard let response = response, let type = response[PushResponse.Key.messageType] else {
                    completionHandler(.noData)
                    return
                }

                guard type != PushResponse.typeUnknown else {
                    // The notification is not recognized by the SDK.
                    completionHandler(.noData)
                    return
                }

                guard type == PushResponse.typeMessaging,
                      let id = response[PushResponse.Key.messageID],
                      let message = Message.message(withID: id) else {
                    completionHandler(.noData)
                    return
                }

                let content = UNMutableNotificationContent()
                // Constructs the notification based on message
                content.title = message.title ?? "Notification"
                content.body = message.message ?? ""
                content.targetContentIdentifier = message.action.

                // Shows the notification to the end user.
                let trigger = UNTimeIntervalNotificationTrigger(timeInterval: 1, repeats: false)
                let request  = UNNotificationRequest(identifier: UUID().uuidString, content: content, trigger: trigger)
                UNUserNotificationCenter.current().add(request) { error in }
                completionHandler(.newData)
            }
        } else {
            completionHandler(.noData)
        }
    }
}