title: Simple JNI call not working
body: <p>In my C++ side I have :</p>
  
  <pre><code>extern "C" {
        JNIEXPORT void JNICALL test(JNIEnv*, jobject){}
  }
  </code></pre>
  
  <p>My Acivity has a declared method :</p>
  
  <pre><code>public native void test();
  </code></pre>
  
  <p>However when I call test I get the error native method not found. What's the problem ?</p>