gistfile1.txt

#include <android/log.h>
void callingMethod(JNIEnv *env, jobject instance) {
    jclass  clz = env->FindClass("com/sampleplayer/ar0816/jnitest/MainActivity");
    jmethodID fn = env->GetMethodID(clz, "jniCallingmethod", "()V" );
    if(!fn ) {
        __android_log_print(ANDROID_LOG_ERROR,
                            "HelloJni",
                            "Failed to get methodID for jniCallingmethod");
        return;
    }
//    jobject my_instance = env->NewGlobalRef(instance);
//    env->CallVoidMethod(my_instance, fn);
//    env->DeleteGlobalRef(my_instance);
    env->CallVoidMethod(instance, fn);
    return;
}