Android NDK

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Android NDK
Developer(s)Google
Initial releaseJune 2009; 13 years ago (2009-06)[1]
Stable release
r25 / July 13, 2022; 6 months ago (2022-07-13)[1]
Written inC and C++
Operating system
PlatformIA-32 (Windows only) or x86-64 (Windows,[2] macOS and Linux)
Available inEnglish
TypeSDK
Websitedeveloper.android.com/ndk/

Code written in C/C++ can be compiled to ARM, or x86 native code (or their 64-bit variants) using the Android Native Development Kit (NDK).[3][4] The NDK uses the Clang compiler to compile C/C++. GCC was included until NDK r17, but removed in r18 in 2018.

Overview[edit]

Native libraries can be called from Java code running under the Android Runtime using System.loadLibrary, part of the standard Android Java classes.[5][6]

Command-line tools can be compiled with the NDK and installed using adb.[7]

Android uses Bionic as its C library, and the LLVM libc++ as its C++ Standard Library. The NDK also includes a variety of other APIs:[8] zlib compression, OpenGL ES or Vulkan graphics, OpenSL ES audio, and various Android-specific APIs for things like logging, access to cameras, or accelerating neural networks.

The NDK includes support for CMake and its own ndk-build (based on GNU Make). Android Studio supports running either of these from Gradle. Other third-party tools allow integrating the NDK into Eclipse[9] and Visual Studio.[10]

For CPU profiling, the NDK also includes simpleperf[11] which is similar to the Linux perf tool, but with better support for Android and specifically for mixed Java/C++ stacks.

References[edit]

  1. ^ a b "Android NDK | Android Developers". Developer.android.com. November 13, 2012. Retrieved March 13, 2014.
  2. ^ "NDK Downloads | Android Developers". developer.android.com. Retrieved 2018-04-24.
  3. ^ Ratabouil, Sylvain (2015). Android NDK beginner's guide : discover the native side of Android and inject the power of C/C++ in your applications (2nd ed.). Birmingham. ISBN 978-1-78398-965-2. OCLC 910639612.
  4. ^ Kosarevsky, Sergey (2013). Android NDK game development cookbook : over 70 exciting recipes to help you develop mobile games for Android in C++. Viktor Latypov. Birmingham. ISBN 978-1-78216-779-2. OCLC 880639342.
  5. ^ Srinivas, Davanum (December 9, 2007). "Android — Invoke JNI based methods (Bridging C/C++ and Java)". Archived from the original on December 16, 2008. Retrieved December 13, 2008.
  6. ^ "java.lang.System". Android Developers. Retrieved September 3, 2009.
  7. ^ "Android Debug Bridge (adb)".
  8. ^ "Android NDK Native APIs | Android NDK".
  9. ^ "Using Eclipse for Android C/C++ Development". January 23, 2011.
  10. ^ "Using Visual Studio to Develop Native Android Code – VisualGDB Tutorials".
  11. ^ "Simpleperf | Android NDK".