CODEWITHSUNDEEP
javaandroidc++
Agnel Kurian
Agnel Kurian

Reputation: 59516

Call C++ library from Java in Android

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.

Upvotes: 14

Views: 16947

Answers (4)

hopia
hopia

Reputation: 5006

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

Upvotes: 8

FearlessHyena
FearlessHyena

Reputation: 4115

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

Upvotes: 2

Sam Palmer
Sam Palmer

Reputation: 1725

I don't know if its exactly the same in Android, but this is a great tutorial that helped me in pure java integration with c++ http://www.javaworld.com/javaworld/javatips/jw-javatip17.html

Upvotes: 0

Alok Save
Alok Save

Reputation: 206616

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     |
+++++++++++++++++++++++++++++++++++

Upvotes: 12

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