Android software development kit (SDK) version 1.0 was released on September 24, 2008. This is the first stable release of the Android platform and should allow developers to prepare applications for commercially available handsets. The Android SDK is available for Windows, Mac OS X, and Linux and includes tools as well as an Android emulator to run applications.
Previously released Android SDK introduced many of the features of the new version. Some features, e.g. Bluetooth and GTalk APIs, were dropped from Android SDK 1.0. Android itself is based on a Linux 2.6.25 kernel, with a Dalvik virtual machine to run Java applications, the development language for Android applications. The open source release of the Android operating system code is, according to Dan Morrill, Android Developer Advocate, due from the Open Handset Alliance by the end of the year.
The emulator is standalone and can be run in order to give users and developers a chance to interact with the operating system found on Android handsets. To try the emulator, download the Android SDK, open a terminal or command line (this is done in Windows XP by ....), go to the tools directory, and run the emulator application. The emulator may give an error saying a data directory does not exist. If it does, create the directory mentioned in the error and run the emulator again.
It should be noted that applications prepared with beta versions of the Android SDK cannot be installed on handsets. Such applications need to be adapted to Android SDK 1.0.
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