Sending Push Notifications

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1 Overview

This is a list of microflow actions that can be called by your application to send push notifications. They are located in the Toolbox under the Push notifications category.

Microflow Action Name Description
SendMessageToDevice Sends a message to a device immediately.
SendMessageToDevices Sends a message to multiple devices immediately.
SendMessageToUser Sends a message to all the devices of a user immediately.
SendMessageToUsers Sends a message to all the devices of multiple users immediately.

All actions accept a MessageData object as the first parameter. The MessageData entity contains all input data for the notification, such as title, body, and timeToLive.

You may use the PrepareMessageData microflow to generate this entity (but you can also create it manually).

Parameter Description
Title The title of the message.
Body The extended text of the notification.
TimeToLive The number of seconds before the notification expires.
Badge The number to show on the app icon.
ActionName The name of the action to perform when the recipient clicks on the notification (see below).
ContextObjectGuid The Mendix object ID of the entity to pass to the specified action.

In addition, you can modify the NextTry attribute to influence when the notification is delivered.

As an alternative to providing a contextObjectGuid, you can pass the entity that you would like to use as a context object to the SendMessage… microflow actions.

2 Actions

You can specify actions to be performed once the recipient clicks a notification. To do so, you should specify the available actions in the widget by following these steps:

  1. Locate the Online_Snippet or Offline_Snippet document and open it.

  2. Double-click the widget to open the properties.

Use the New button to add new actions. Each action requires a name, an action type (Open Page or Call Microflow), and optionally an entity (the type of the context object). Depending on the action type, you should configure the page to be opened or the microflow to be called.

The names of the actions can be used as the vlaue of the ActionName attribute of the MessageData entity.

2.1 Shortcomings of This Approach

  • Nanoflows are not yet supported
  • Microflows can only be used in online apps; in offline apps, microflows are not supported