Enclose contents of your cpp with following
#ifdef __cplusplus
extern "C" {
#endif
<your cpp functions>
#ifdef __cplusplus
}
#endif
On 22 дек, 14:30, TobyKaos <[email protected]>
wrote:
> Hello, I first run samples found in androind ndk and I create my own
> in C. I successfully print a hello world with c function.
>
> but now I want to call c++ function. Then I change file extensions
> to .cpp and remake with ndk-build. Ok that seems to work fine. I
> refresh my eclispe project. Ok eclispe seems to find my hello world
> function in new .so lib made in c++.
>
> Then I launched debug and application failed because it does not find c
> ++ function. My function is the same but I modify jni function in it
> to match c++ jni.
>
> My TestSTL.java
>
> package com.project.teststl;
>
> import android.app.Activity;
> import android.os.Bundle;
> import android.widget.TextView;
>
> public class TestSTL extends Activity {
> /** Called when the activity is first created. */
> @Override
> public void onCreate(Bundle savedInstanceState) {
> super.onCreate(savedInstanceState);
> //setContentView(R.layout.main);
>
> TextView tv = new TextView(this);
> tv.setText( stringFromJNI() );
> setContentView(tv);
> }
>
> native public static String stringFromJNI();
>
> static {
> //System.loadLibrary("stlport_shared");
> System.loadLibrary("teststl");
> }
>
> }
>
> *************************************
> my test.cpp file
>
> #include <string.h>
> #include <jni.h>
>
> #include <stdlib.h>
> #include <stdio.h>
>
> /* Call to initialize the graphics state */
> JNIEXPORT jstring JNICALL
> Java_com_project_teststl_TestSTL_stringFromJNI( JNIEnv* env, jobject
> obj )
> {
> jstring s = (env)->NewStringUTF( "Hello from JNI !");
>
> return s;
>
> }
>
> I repeat, in C all is ok (I just modify NewStringUTF for C or C++
> because are not the same definition).
>
> Please help me.
--
You received this message because you are subscribed to the Google
Groups "Android Developers" group.
To post to this group, send email to [email protected]
To unsubscribe from this group, send email to
[email protected]
For more options, visit this group at
http://groups.google.com/group/android-developers?hl=en
