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Android - Software stack for mobile devices that includes an operating system, middleware and key applications Android is a software stack for mobile devices that includes an operating system, middleware and key applications. This early look at the Android SDK provides the tools and APIs necessary to begin developing applications on the Android platform using the Java programming language.Android will ship with a set of core applications including an email client, maps, browser, SMS program, calendar, contacts, and others. All applications are written using the Java programming language.Android includes a set of core libraries that provides most of the functionality available in the core libraries of the Java programming language.Android relies on Linux version 2.6 for core system services such as security, memory management, process management, network stack, and driver model. The kernel also acts as an abstraction layer between the hardware and the rest of the software stack.Android provides access to a wide range of useful libraries and tools that can be used to build rich applications. For example, Android enables developers to obtain the location of the device, and allows devices to communicate with one another enabling rich peer-to-peer social applications. In addition, Android includes a full set of tools that have been built from the ground up alongside the platform providing developers with high productivity and deep insight into their applications.Main features of Google Android SDK:Application framework enabling reuse and replacement of componentsDalvik virtual machine optimized for mobile devicesIntegrated browser based on the open source WebKit engineOptimized graphics powered by a custom 2D graphics library; 3D graphics based on the OpenGL ES 1.0 specification (hardware acceleration optional)SQLite for structured data storageMedia support for common audio, video, and still image formats (MPEG4, H.264, MP3, AAC, AMR, JPG, PNG, GIF)GSM Telephony (hardware dependent)Bluetooth, EDGE, 3G, and WiFi (hardware dependent)Camera, GPS, compass, and accelerometer (hardware dependent)Rich development environment including a device emulator, tools for debugging, memory and performance profiling, and a plugin for the Eclipse IDERequirements of Google Android SDK:Java What's New in This Release: New Features: The Android emulator now support SD card images up to 128 GB in size. The previous limit was 2 GB. Support for managing multiple devices has been integrated into DDMS. This should make it easier to debug applications that are run on multiple device scenarios. ADT now attempts to connect a debugger to any application that shows up in the wait-for-debugger state, even if this application was not launched from Eclipse. ADT has launch modes for device target selection. Automatic mode will: 1) launch an emulator if no device is present, 2) automatically target the device if only one is connected, and 3) prompt the user if 2 or more are connected. Manual mode will always prompt the user. ADT also contains the same support for multiple devices that has been introduced into DDMS. AIDL files that import and reuse types is now supported by activityCreator.py and ADT. The traceview tool is now included in the SDK. Resolved Issues: 917572: The activityCreator created incorrect IntelliJ scripts 917465: Unanswered incoming calls placed from the emulator console will result in an unfinished call UI if you press the call back button 917247: dmtracedump and traceview tools are not available in the SDK 912168: Extremely rapid or prolonged scrolling in the Maps application or MapsView will result in application errors 905852: adb emits warnings about deprecated API use on Mac OS X 10.5 905242: The Run dialog sometimes failed to show the Android Launcher 901122: The focus ring in the browser is sometimes incorrect 896274: On Windows, the emulator sometimes starts off-screen 778432: Icons for newly installed applications do not display Known Issues: 1017312: The emulator window size has been reduced slightly, to allow it to be fully visible on smaller screens. This causes a slight clipping of the HVGA emulator skin but does not affect its function. 1021777: Setting a power requirement in a Criteria object passed to getBestProvider() will result in a value not being returned. 1025850: Emulator failing to launch from the Eclipse plugin due to wrong custom command line parameters do not report the error anywhere and silently fails.

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