The Quickblox Android SDK by Quickblox offers a transition guide of versions along with references to run samples on Android Studio and Eclipse. Push notifications, simple Android custom objects, and simple Android chat are some of the examples available with images and code.
Windows Azure, the mobile back end as a service platform, has added custom APIs, Git, NPM, Android Push Notifications, along with a free SQL DB. As Scott Guthrie, who builds for Microsoft, demonstrates on his "Scottgu blog," the creation of custom APIs is extremely simple. Here's the first shot at the start of building an API that works with a to do list.
Parse, a leading backend-as-a-Service mobile SDK provider, has launched a new service called Cloud Code making it possible for app developers to add custom backend code that is easily accessible by any client (iOS, Android, HTML5, or via the REST API) without servers.
Two months ago TokBox gave up 2 million users to focus on its TokBox OpenTok API. The former video chat site instead wanted to make it easy for everyone to add video chat to their sites. The platform now has over 80 partners and is seeing great interest amongst developers. Today the company announced a move into making its video chat available on mobile devices.