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This chapter is from the book

Summary

This chapter has been a very high-level tour of the Android system. It inspects Android from three very broad points of view: as a series of layers of abstraction, starting at the hardware and ending with user applications; as a client-server architecture in which servers regulate access to scarce resources; and as a build environment, with source and tools for generating the running system.

Subsequent chapters walk up the stack illustrated in Figure 3.1, illustrating the relation between the source code and the running system and demonstrating at each layer how to customize behavior.

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