Google APIs Add-On : Cheap Google Pad + Touch

Google APIs Add-On

Google APIs Add-On is an extension to the Android SDK development environment that lets you develop applications for devices that include Google's set of custom applications, libraries, and services. A central feature of the add-on is the Maps external library, which lets you add powerful mapping capabilities to your Android application.
The add-on also provides a compatible Android system image that runs in the Android Emulator, which lets you debug, profile, and test your application before publishing it to users. The system image includes the the Maps library and other custom system components that your applications may need, to access Google services (such as Android C2DM). The add-on does not include any custom Google applications. When you are ready to publish your application, you can deploy it to any Android-powered device that runs a compatible version of the Android platform and that also includes the custom Google components, libraries, and services.
The Google APIs add-on includes:

• The Maps external library
• A fully-compliant Android system image (with the Maps library and other custom system components built in)
• A sample Android application called MapsDemo
• Full class documentation (also available on this site)

To get started with the Google APIs add-on, begin by reading Installing the Add-On.

Android (operating system) : Cheap Google Pad + Touch

 

Android (operating system)

Android is a software stack for mobile devices that includes an operating system, middleware and key applications.^[6][7] Google Inc. purchased the initial developer of the software, Android Inc., in 2005.^[8] Android's mobile operating system is based on the Linux kernel. Google and other members of the Open Handset Alliance collaborated on Android's development and release.^[9][10] The Android Open Source Project (AOSP) is tasked with the maintenance and further development of Android.^[11] The Android operating system is the world's best-selling Smartphone platform.^[12][13]

Android has a large community of developers writing applications ("apps") that extend the functionality of the devices. There are currently over 150,000 apps available for Android.^[14][15] Android Market is the online app store run by Google, though apps can also be downloaded from third-party sites. Developers write primarily in the Java language, controlling the device via Google-developed Java libraries.^[16]
The unveiling of the Android distribution on 5 November 2007 was announced with the founding of the Open Handset Alliance, a consortium of 80 hardware, software, and telecom companies devoted to advancing open standards for mobile devices.^[17][18] Google released most of the Android code under the Apache License, a free software and open source license.^[19]

The Android open-source software stack consists of Java applications running on a Java-based, object-oriented application framework on top of Java core libraries running on a Dalvik virtual machine featuring JIT compilation. Libraries written in C include the surface manager, OpenCore^[20] media framework, SQLite relational database management system, OpenGL ES 2.0 3D graphics API, WebKit layout engine, SGL graphics engine, SSL, and Bionic libc. The Android operating system, including the Linux kernel, consists of roughly 12 million lines of code including 3 million lines of XML, 2.8 million lines of C, 2.1 million lines of Java, and 1.75 million lines of C++.^[21]