在Android中从Java调用C ++库

Question

Is it possible to call a C++ library from an Android app? If yes, how?

I have zero experience in Android programming (some Java programming experience though) but I would still like to know if this is possible. Given the number of great C++ libraries out there, I would be surprised if it were not possible to call a C++ library from an Android app.

Answer 1

You need to write an Java Native Interface(JNI) to be able to call the native(c/c++) libraries from Android Java code.
The hierarchy is like:

+++++++++++++++++++++++++++++++++++        
|     Android Application         |        
+++++++++++++++++++++++++++++++++++        


+++++++++++++++++++++++++++++++++++  
|  Android Application Framework  |
+++++++++++++++++++++++++++++++++++  


+++++++++++++++++++++++++++++++++++    
|     Java Native Interface       |
+++++++++++++++++++++++++++++++++++


+++++++++++++++++++++++++++++++++++
|      C/C++ Native Libraries     |
+++++++++++++++++++++++++++++++++++

Answer 2

Yes, it's possible. You need to build your C++ library using the Android NDK. The new link https://developer.android.com/ndk/index.html

Answer 3

Yes you can. As previous posters mentioned you build your C++ library using the NDK and use JNI to call it from Java

If you're planning to make several C++ classes accessible you can use SWIG to automatically generate the JNI layer for you

http://www.swig.org/index.php

Answer 4

我不知道它在Android中是否完全相同，但这是一个很棒的教程，帮助我在纯Java中与c ++集成http://www.javaworld.com/javaworld/javatips/jw-javatip17.html