Some packages must be installed as they are required pcakges,others are recommended as it bring extra benefit and else are optional since not installing them don't affect core compilation. They are packages that essentially needed for your daily Android app development.It consists of Compiler,Source,Platform Tools,Build Tools and optioanally System Images. You must install it as this is required packages. It contains sdkmanager CLI tools that manages other packages. We split them to several parts: Base Package: Android SDK CMDLine-ToolsĪndroid SDK Tools is the base package and is required to be setup first before anything else. Welcome Android Devs! This page provides you all Android SDK Packages for Android 8.1.0 Oreo API 27. Android SDK 8.1.0 API 27 Oreo Direct Download