In our continuing coverage of the App Development forums here at XDA, we've featured various open source libraries that  enable you to quickly add in functionality into your app-in-progress without having to reinvent the wheel. These libraries have streamlined app development in topics ranging from UI design and data visualization  to application updates and everything in between.

Now, thanks to XDA Senior Member klinkdawg, there is an open source library for SMS and MMS messaging. After gaining knowledge while creating his own messaging app, klinkdawg released his library with the intention of helping other developers create their own SMS and MMS apps.

In addition to simply sharing the code, the developer has also written a brief guide in the thread that should cover basic usage. Currently, Google Voice is not supported, but that is on the way in a future revision. Additionally, this library is in beta, and uses non-final APIs.

Despite the beta status, this library could be of use if you've been planning on adding text messaging to your app. Head over to the library thread and knlinkdawg's Github to get started.