Pushmanager is a small wrapper for FCM (Firebase Cloud Messaging) and your app needs just a few methods to interact with it.
Custom Android view with video player, play/stop, loader and placeholder image.
Smack is an open source, cross-platform, easy to use, Java XMPP client library.
A pure Java library, it can be embedded into your applications to create anything from a full XMPP client to simple XMPP integrations such as sending notification messages and presence-enabling devices. Smack and XMPP allows you to easily exchange data, in various ways e.g. fire-and-forget, publish-subscribe, between human and non-human endpoints.