(This book first teaches you to correctly understand the principles of the framework (dustpan), and then introduces how to make good use of dustpan to develop excellent Android applications (good bow). This book is divided into 4 chapters: ※ Chapter 1: Introduction to the concept, principle and characteristics of application framework. ※ Part 2: Elaborating the design skills of application framework. That is, how to create an application framework. (Note: If your job is to "use" the Android framework to develop applications, you can skip this chapter and go directly to the third one.) ※ Chapter 3: Explain and practice the 36 techniques of Android application design. ※ Part IV: Introduce the development process and tools of C components between Android framework and hardware.
Principles and Programming of Android Application Framework.pdf)