An Introduction to Android Internals
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This document provides an introduction to Android internals. It discusses the history of Android starting from Danger Inc's Sidekick smartphone in 2002. It also outlines the major Android versions from 1.0 to Lollipop 5.0. The Android ecosystem involves semiconductor manufacturers, device manufacturers, and applications/services. The document describes the architecture including an app developer's view, the smartphone internals, system on a chip, and the system startup process involving the bootloader, kernel, zygote and more.
![Android Open Source Project - (AOSP)
Download: https://source.android.com/source/building.html
“A 64-bit Linux or Mac system with 16GB of RAM/swap and >30GB of disk
space to build the AOSP”
Python 2.6 -- 2.7, [python.org]
GNU Make 3.81 -- 3.82, [gnu.org]
JDK 7 [openjdk.java.net]
Git 1.7 [git-scm.com]
Browse Code: https://android.googlesource.com/](https://image.slidesharecdn.com/insideandroid-gdg-141201044247-conversion-gate02/85/An-Introduction-to-Android-Internals-9-320.jpg)
An Introduction to Android Internals
- 1. Inside Android An Introduction to Android Internals Anjana Somathilake (!makewita)
- 3. Android Internals? A real driver knows exactly what's in his car.
- 4. Bit of History Sidekick smart phone by Danger Inc in 2002 - Google was the default search engine Andy Rubin founded Android Inc. in October 2003 - Open OS for phone manufacturers Google acquired Android Inc. in August 2005 Open Handset Alliance (OHA) was formed in November 2007 Google Android 1.0 (Alpha) is released in September 2008 "I don't understand the impact they are going to have.” ~Scott Horn, then head of the Windows Mobile marketing team HTC Dream a.k.a HTC G1 released in October of 2008 - First device to compete with Apple’s iPhone
- 5. Versions Alpha (1.0) Beta (1.1) Cupcake (1.5) Donut (1.6) Eclair (2.0–2.1) Froyo (2.2–2.2.3) Gingerbread (2.3–2.3.7) Honeycomb (3.0–3.2.6) Ice Cream Sandwich (4.0–4.0.4) Jelly Bean (4.1–4.3.1) KitKat (4.4–4.4.4) Lollipop (5.0)
- 6. Ecosystem Semiconductor Manufacturers System-on-Chip (SoC) - ARM, TI, Qualcomm, Freescale, and Nvidia Device Manufacturers Motorola, Samsung, HTC, Sony, LG, Archos, Dell, and ASUS Applications, Services and Markets Google, Amazon, Verizon, Sprint and Barnes & Noble
- 7. Hardware and Compliance Requirements “In principle, Android should run on any hardware that runs Linux. Android has in fact been made to run on ARM, x86, MIPS, …”
- 8. Where is Android? More than just smartphones and tablets + + : # $ + Automotive Home Entertainment Embedded Computing Wearables + J
- 9. Android Open Source Project - (AOSP) Download: https://source.android.com/source/building.html “A 64-bit Linux or Mac system with 16GB of RAM/swap and >30GB of disk space to build the AOSP” Python 2.6 -- 2.7, [python.org] GNU Make 3.81 -- 3.82, [gnu.org] JDK 7 [openjdk.java.net] Git 1.7 [git-scm.com] Browse Code: https://android.googlesource.com/
- 10. Architecture Originals at: www.opersys.com/training/embedded-android
- 11. App Developer’s View Android Software Development Kit (SDK) - Java Native Development Kit (NDK) - C The infamous Angry Birds game is heavily built on the NDK Apps will be killed (randomly) by the system , developers must code accordingly
- 12. Inside Smart Phone Originals at: www.opersys.com/training/embedded-android
- 13. Inside SoC Originals at: www.opersys.com/training/embedded-android
- 14. Inside Android Originals at: www.opersys.com/training/embedded-android
- 15. Zygote
- 16. System Startup 1.Bootloader 2.Kernel 3.Anroid Init 4.Zygote & Dalvik 5.System Server 6.Activity Manager 7.Launcher (Home)
- 17. System Startup Originals at: www.opersys.com/training/embedded-android
- 18. Further Reading Thank You!