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Android Software Stack and Terminology (Tutorial 01)

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The Android system software stack is typically divided into the four areas as the following graphic:

image

Terminology

  • Android Software Development Kit (Android SDK) contains the necessary tools to create, compile and package Android applications
  • Android debug bridge (adb), which is a tool that allows you to connect to a virtual or real Android device
  • Google provides two integrated development environments (IDEs) to develop new applications.
    • Android Developer Tools (ADT) are based on the Eclipse IDE
    • Android Studio based on the IntelliJ IDE
  • Android RunTime (ART) uses Ahead Of Time compilation, and optional runtime for Android 4.4
  • Android Virtual Device (AVD) - The Android SDK contains an Android device emulator. This emulator can be used to run an Android Virtual Device (AVD), which emulates a real Android phone
  • Dalvik Virtual Machine (Dalvik)-
    • The Android system uses a special virtual machine, Dalvik, to run Java-based applications. Dalvik uses a custom bytecode format which is different from Java bytecode.
    • Therefore you cannot run Java class files on Android directly; they need to be converted into the Dalvik bytecode format.

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Published at DZone with permission of Madhuka Udantha, DZone MVB. See the original article here.

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