Push notifications

rmación 4D for Android

Esta sección no está disponible actualmente en 4D for Android.

¿Qué es una notificación push?

On a mobile phone, a push notification is an alert message, received via an application, that you can open, delete, allow or block. It can be very useful for example to notify your app users that a new version is available.

But what about the architecture to implement, in order to integrate this functionality into a mobile application? And what is the process of a push notification, from creation to display on the user's mobile?

Arquitectura técnica

Estos son los diferentes elementos necesarios para crear, enviar y recibir una notificación push móvil:

Prerrequisitos

Para enviar notificaciones push, se requiere un archivo de autenticación AuthKey_XXXYYY.p8 de Apple.

1. Genere y descargue un archivo de llave .p8 como se describe en esta documentación.

2. En la página Publishing, marque la opción Notificaciones push y seleccione su certificado en el proyecto móvil.

Ejemplo básico para gestionar sus notificaciones push

El componente 4D Mobile App Server ofrece métodos para enviar notificaciones push a uno o varios destinatarios. Para obtener información detallada, consulte la documentación del componente PushNotification.

Here is a simple example of push notification sent to test@4d.com:

$pushNotification:=MobileAppServer.PushNotification.new() 
$notification:=New object 
$notification.title:="Este es el título" 
$notification.body:="Este es el contenido de esta notificación" 
$response:=$pushNotification.send($notification;"test@4d.com")

It's as simple as that!

:::consejo

Utilice el componente 4D Mobile App Server para adaptar fácilmente notificaciones push a sus propias necesidades. Feel free to use it and to pick the most relevant aspects for your app. And of course, all contributors are welcome to this project, through feedback, bug reports and even better: pull requests.

:::

Notificación push con sincronización de datos

With a push notification, you can also launch a synchronization to update your data.

For example, if your application has a delivery tracking option, the delivery information will be updated in the database thanks to a notification sent to the customer. This notification, containing a request to synchronize the data, will enable the customer to get the modified data on their smartphone.

To do so using the 4D Mobile App Server component, you need to specify whether or not you want to force data synchronization in your push notification. Therefore, simply provide the dataSynchro boolean value in the userInfo object.

Data synchronization with a notification opening a record

By default, a notification opening a record automatically triggers a data synchronization.

For example, in a Contact app, if a contact’s specific information (i.e. a contact’s record, such as the address or the phone number) has been modified, the user receives a notification that automatically opens the relevant record and synchronizes the data contained in the record. When the user opens the notification, the contact’s information is fully updated.

Here's an example of the default behaviour, a dataSynchro request with the open() method:

:::nota

For open() method exclusively, this is the default behaviour. As a result, if you don't specify the dataSynchro boolean value, it is true by default.

:::

$pushNotification:=MobileAppServer.PushNotification.new()

$notification:=New object
$notification.title:="This is title" 
$notification.body:="Este es el contenido de esta notificación" 

$entity:=ds.Employees.get("456456")
$response:=$pushNotification.open($entity; $notification; $recipients)

However, you can also choose not to force a data synchronization, by preventing dataSynchro:

$pushNotification:=MobileAppServer.PushNotification.new()

$notification:=New object
$notification.title:="Este es el título" 
$notification.body:="Este es el contenido de esta notificación" 
$notification.userInfo:=New object("dataSynchro"; False)

$entity:=ds.Employees.get("456456")
$response:=$pushNotification.open($entity; $notification; $recipients)

Data synchronization with a simple notification

You can also request a synchronization for a simple notification without opening a specific record. For example, some new entries have been added. You can then inform your user and update the data with no manipulation on their part.

Here is a code example that you can also use with other methods, as long as you fill the userInfo object with dataSynchro value.

$pushNotification:=MobileAppServer.PushNotification.new()

$notification:=New object
$notification.title:="Este es el título" 
$notification.body:="Este es el contenido de esta notificación" 
$notification.userInfo:=New object("dataSynchro"; True)

$response:=$pushNotification.send($notification; $recipients)

Configuración Windows

Windows users need to download the last CURL version to work on the variables of the environment of their machine. Or they can insert curl.exe in the Resources folder of their production database.

Carpeta MobileApps

Whether you're working on Windows or on macOS, you need to copy the following files from your development project to your production project:

• 4DBASE/MobileApps/ID.BundleID/AuthKey_XXXX.P8
• 4DBASE/MobileApps/ID.BundleID/manifest.json