www.pudn.com > jniexamples.zip > InstanceMethodCall.c

#include 
#include 
#include "InstanceMethodCall.h"  

jmethodID MID_InstanceMethodCall_callback;

JNIEXPORT void JNICALL 
Java_InstanceMethodCall_initIDs(JNIEnv *env, jclass cls)
{
    MID_InstanceMethodCall_callback =
        (*env)->GetMethodID(env, cls, "callback", "()V");
}

JNIEXPORT void JNICALL 
Java_InstanceMethodCall_nativeMethod(JNIEnv *env, jobject obj)
{
    printf("In C\n");
    (*env)->CallVoidMethod(env, obj,
                           MID_InstanceMethodCall_callback);
}