Download the

This is NOT the current Android SDK release.

The Android NDK is a companion tool to the Android SDK that lets you build performance-critical portions of your apps in native code. It provides headers and libraries that allow you to build activities, handle user input, use hardware sensors, access application resources, and more, when programming in C or C++. If you write native code, your applications are still packaged into an .apk file and they still run inside of a virtual machine on the device. The fundamental Android application model does not change.

Using native code does not result in an automatic performance increase, but always increases application complexity. If you have not run into any limitations using the Android framework APIs, you probably do not need the NDK. Read What is the NDK? for more information about what the NDK offers and whether it will be useful to you.

The NDK is designed for use only in conjunction with the Android SDK. If you have not already installed and setup the Android SDK, please do so before downloading the NDK.

Platform	Package	Size	MD5 Checksum
Windows		bytes
Mac OS X (intel)		bytes
Linux 32/64-bit (x86)		bytes

Welcome Developers! If you are new to the Android SDK, please read the steps below, for an overview of how to set up the SDK.

If you're already using the Android SDK, you should update to the latest tools or platform using the Android SDK and AVD Manager, rather than downloading a new SDK starter package. See Adding SDK Components.

Platform	Package	Size
Windows		bytes
Windows	(Recommended)	bytes
Mac OS X (intel)		bytes
Linux (i386)		bytes

Welcome developers! We are pleased to provide you with a preview SDK for the upcoming Android 3.0 release, to give you a head-start on developing applications for it.

See the Getting Started document for more information about how to set up the preview SDK and get started.