[MUSIC] Hi, my name is Doug Schmidt and I'd like to welcome you to our second MOOC on Android app components, which is the third course in our specialization on Android app development. This MOOC builds upon the material covered in our first two MOOCs and delves deeper into Android's layered software architecture. In particular, we focus on how to apply its started and bound service components, local inter-process communication mechanisms and frameworks, and content provider components to develop a range of useful mobile apps that showcase Android's material design paradigm. Throughout this MOOC, you'll learn by example how to program these Android components as well as create your own app that downloads, stores and displays RSS atom feeds. You'll not only apply the topics covered in the weekly lesson videos, but you'll also learn how to apply the intent, activity and broadcast receiver topics covered in MOOC two. Each week you'll add new capabilities to this app. We estimate you'll spend roughly four to six hours per week watching video lectures, taking quizzes, and programming and evaluating assignments using Android and Java. After completing this MOOC, you'll have a deeper understanding of the key layers in the Android software architecture. You'll also know how program started & bound services that process long duration operations in the background and access remote resources. In addition, you'll be able to use Android's local inter-process communication mechanisms & frameworks to pass messages between activity and service components. Finally, you'll learn how to store structured data persistently, and content providers using SQLite database mechanisms. If these topics inspire you to learn more about Android app development, please consider watching the digital learning resources that are available at my website, which provide many more hours of lessons in object oriented design and programming with Java and C++, patterns and frameworks for concurrent network software in Android middleware and system programming mechanisms. So let's get started. [MUSIC]