android - NDK call in a GLSurfaceView class -

i trying render opengl es surface ndk, got halted in work. have setup similar 3d example in ndk. have class inheriting glsurface view , 1 inheriting glsurfaceview.renderer. in .c file, have simple method nothing. void function nothing in it. can call function in class inherit activity oncreate method.
private static native void nativesetup();

@override public void oncreate(bundle savedinstancestate) {     super.oncreate(savedinstancestate);     requestwindowfeature(window.feature_no_title);     mglview = new graphglsurfaceview(this);     setcontentview(mglview);     nativesetup(); } 

the program works fine. however, if put call (and declaration) in 1 of glsurfaceview classes, program fails (nativesetup call in question). have verified working fine without native call (a colored surface drawn). have ideas why cannot call native code glsurface classes?

my c file:

#include <string.h> #include <jni.h>  void java_com_test_intro_nativesetup( jnienv*  env ){} 

my java file in non working manner:

package com.test;  import javax.microedition.khronos.egl.eglconfig; import javax.microedition.khronos.opengles.gl10;  import android.app.activity; import android.content.context; import android.opengl.glsurfaceview; import android.os.bundle; import android.util.log; import android.view.window;  public class intro extends activity {     static{         system.loadlibrary("graphrender");     }     private glsurfaceview mglview;      @override     public void oncreate(bundle savedinstancestate) {         super.oncreate(savedinstancestate);         requestwindowfeature(window.feature_no_title);         mglview = new graphglsurfaceview(this);         setcontentview(mglview);      } }  class graphglsurfaceview extends glsurfaceview {     graphrenderer mrenderer;         public graphglsurfaceview(context context) {         super(context);         mrenderer = new graphrenderer();         setrenderer(mrenderer);      } }  class graphrenderer implements glsurfaceview.renderer {      private static native void nativesetup();     private float _red = 0.9f;     private float _green = 0.2f;     private float _blue = 0.2f;      public void onsurfacecreated(gl10 gl, eglconfig config) {          log.d("intro", "got intro 4" );     }      public void onsurfacechanged(gl10 gl, int w, int h) {         gl.glviewport(0, 0, w, h);         nativesetup();         //log.d("intro", "got intro 2" + debugstr);     }      public void ondrawframe(gl10 gl) {         log.d("intro", "got intro 3");         gl.glclearcolor(_red, _green, _blue, 1.0f);         // clear color buffer show clearcolor called above...         gl.glclear(gl10.gl_color_buffer_bit);     } } 

in c file did rename native function?maybe problem related issues, cause jni uses particular naming navtive functions.

have here , try use javah -jni $class-file-with-native-methods$ obtain c files.

hope helps.

ciao