Android-jni adding standard C + + files

JNI joins standard C + + files

This address: Http://blog.csdn.net/caroline_wendy

Other references: http://blog.csdn.net/caroline_wendy/article/details/39032551

If you need to invoke the standard C + + library , you need to add the application.mk method under the JNI directory .

A Standard Template Library (STL) that declares the use of C + +: app_stl: = gnustl_static

App_stl: = gnustl_staticapp_cppflags: =-frtti-fexceptions#app_abi: = armeabi-v7a

then create the add C + + source file and header file , declared in Android.mk .

header file is the directory path (the same directory can be omitted), the source file is the CPP file address , note is "+ =", indicating that is to continue to join

#LOCAL_C_INCLUDES + =/local_src_files + =/sayname.cpp

android.mk detailed files:

Local_path: = $ (call My-dir) include $ (clear_vars) local_module    : = hellomyjnilocal_src_files: = hellomyjni.cpp# Local_c_includes + =/local_src_files + =/sayname.cppinclude $ (build_shared_library)

header file and source file contents:

/* * sayname.h * *  Created on:2014 September 4 *      author:administrator * * #ifndef sayname_h_#define sayname_h_#include &L  T;string>using namespace std;string sayname (void); #endif/* Sayname_h_ *//* * sayname.cpp * *  Created on:2014 Year September 4 *      Author:administrator */#include "sayname.h" string sayname (void) {string str = "Hello Spike and Caroline and wendy! !!"; return str;}

The interface files will be able to invoke these standard C + + files.

Detailed Invocation Method:

#include <jni.h> #include "com_example_hellomyjni_jniclient.h" #include "sayname.h" Jniexport jstring Jnicall Java_com_example_hellomyjni_jniclient_sayname  (jnienv *env, jclass) {string str = Sayname (); return env-> Newstringutf (Str.c_str ());}

Android-jni adding standard C + + files