addListener

Purpose

Registers a listener for push notifications.

addListener( callback )

This method does not return anything.

Name	Description	Type	Use
callback	Passed to process the notification.	`undefined`	required

The PushNotifications listener's callback can be structured as follows:

{
  onPushNotification: function(data)  { ... }
}

Depending on a device platform, the data object contains such properties, as alert, badge and sound .

Name	Description	Return type
`onPushNotification`	Called if the registration is successful. It passes the data that has been sent in a notification.	`undefined`