android - Call Java function from native function based on cached jobject and methodID fail -

java source:

public void oneventlistener(final int eventid, final int arg1,             final long arg2, final string message)  {      log.d("test", "oneventlistener() called - eventid = "+eventid); } 

---

jni code:

javavm* gjvm = null;  pid_t _vm_tid = -1;  jnienv * jenv = null;  jclass native_cls_id = null;  jmethodid _oneventlistenerid=null;  jobject m_nativeobj = null;  jint jni_onload(javavm* vm, void* reserved) {         ....      gjvm = vm;     _vm_tid = gettid();         .... } 

//function

void notifyfromnative(int eventid, int arg1, long arg2, char* message) {     logd("receive_message_callback called - eventid = %d",eventid);      jnienv* env = null;     pid_t tid = gettid();     logd("step 0");     if (tid != _vm_tid) {          jint ret = gjvm->attachcurrentthread(&env, null);         logd("step 1 - tid != _vm_tid ret=%d",ret);      } else {         logd("step 1 - tid == _vm_tid");         gjvm->getenv((void**) &env, jni_version_1_4);     }     logd("step 2");      jstring jstr = env->newstringutf(message);     logd("step 3");      env->callvoidmethod(m_nativeobj, _oneventlistenerid, eventid, arg1, arg2,             jstr);     logd("step 4");     env->deletelocalref(jstr);      if (tid != _vm_tid)         gjvm->detachcurrentthread(); } 

---

//initialize jni function

jniexport jint jnicall java_nativemanager_initialize(jnienv * env,         jobject obj) {      log_ui("native initialize called");      m_nativeobj = env->newglobalref(obj);      jclass cls = env->findclass(classpathname);     if (cls == null) {         loge("can't find class %s", classpathname);         return 0;     }      native_cls_id = (jclass) env->newglobalref(cls);     _oneventlistenerid = env->getmethodid(native_cls_id, "oneventlistener",                 "(iijljava/lang/string;)v");      if (!_oneventlistenerid)         {          loge("can't find oneventlistener java method");              return 0;     }            char* message = "test";     jstring jstr = env->newstringutf(message);         env->callvoidmethod(m_nativeobj, _oneventlistenerid, 1, 1, 1,                 jstr); //this call work      notifyfromnative(0, 1, 1, "test"); //<= problem here  } 

---

logcat message

oneventlistener() called - eventid = 1  receive_message_callback called - eventid = 0 step 0 step 1 - tid == _vm_tid step 2 step 3  w/dalvikvm(2160): invalid indirect reference 0x576725d0 in decodeindirectref e/dalvikvm(2160): vm aborting a/libc(2160): fatal signal 11 (sigsegv) @ 0xdeadd00d (code=1), thread 2160 () 

question:

can explain me why calling notifyfromnative(0, 1, 1, "test") has problem although global reference of objects created. thank much

i found android jni function can't use long parameter. so, break long value 2 integer values , code working now.