The Room library is described as a simple object-mapping layer designed to help developers ... bound entities like Activities and Fragments." The Android team also announced a Guide to App ...

READ: More articles on Android] Let's start off by taking a look at the overall system architecture--the key layers and components that make up the Android stack. The following diagram (courtesy ...

"Combining hard-won expertise in the MIPS architecture ... efforts at several layers of the stack, including the kernel, drivers, development toolchain, and Android's Dalvik virtual machine.