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Using Presence with Shared Contacts
Using the Avaya Client SDK, you can easily get presence of shared contacts.
To display presence of contact from your device, you must complete the following activities.
To subscribe for contact's presence, use functions exposed by Contact class.
First, add Contact.onPresenceChangedCallback() to Contact.
var onPresenceChanged = function (contact, presence) {
console.log('Overall presence state of ' + contact.getDisplayName() + ' is ' + presence.getOverallState());
};
contact.addOnPresenceChangedCallback(onPresenceChanged);
After that, call Contact.startPresence(). You will receive instant notification with current presence information of the contact and will be receiving further updates.
contact.startPresence().then(
function () {
console.log('Successfully subscribed for presence updates of ', contact.getDisplayName());
},
/**
* @param {AvayaClientServices.Services.Presence.PresenceError} error
*/
function (error) {
console.error('Failed to subscribe for presence updates', error);
}
);
Once we subscribed for contact's presence the updates will be reflected automatically. See Subscribe for contact's presence for more details.
If you need to get contact's presence immediately, call Contact.getPresence() after presence service is started.
/**
*
* @param {AvayaClientServices.Services.Presence.Presence} presence
*/
var presence = contact.getPresence();
Do not forget to unsubscribe from contact's presence when you no longer want to receive the presence updates.
First, remove Contact.onPresenceChangedCallback() from Contact.
After that, call Contact.stopPresence() to stop presence service for contact.
contact.removeOnPresenceChangedCallback(onPresenceChanged);
contact.stopPresence()
