JNI Demo

jniexample.java

package com.my.package;

import org.cocos2dx.lib.Cocos2dxHelper;
import org.cocos2dx.lib.Cocos2dxActivity;

public class JNIExample
{
  static public void JavaFromCpp(String java_str, String [] java_array, boolean flag) 
  {
    // run on cocos thread
    Cocos2dxHelper.getActivity().runOnUiThread(new Runnable() {
      public void run() {
        // do something
      }
    });
  }
  
  static public void JavaToCpp(String str, float num) {
    // run on cocos thread
    ((Cocos2dxActivity)Cocos2dxHelper.getActivity()).runOnGLThread(new Runnable() {
      public void run() {
        JavaToCpp(str,num);
      }
    });
  }
  
  // notice "native" keyword here. 
  public static native void CppFromJava(String str, float num)
}