JNI WARNING: CallObjectMethod expected return type 'L'

初学C调用java代码，出错如下：

07-14 10:36:15.028 27654-27654/study.jnidemo W/dalvikvm:            JNI WARNING: CallObjectMethod expected return type 'L'

07-14 10:36:15.028 27654-27654/study.jnidemo W/dalvikvm:              calling Lstudy/jnidemo/JniDemoActivity;.importCert ()V

07-14 10:36:15.028 27654-27654/study.jnidemo W/dalvikvm:              in Lstudy/jnidemo/JniDemoActivity;.jniImportCert:()V (CallObjectMethod)

仔细检查C代码发现问题：

voidJava_study_jnidemo_JniDemoActivity_jniImport (JNIEnv*env,jobjectthiz){

          jclasscls=(*env)->GetObjectClass(env,thiz);

          if(cls!=NULL){

                   jstringstr;

                   jmethodIDmethod3=(*env)->GetMethodID(env,cls,"import","()V");

                   if(method3!=NULL){

                             (*env)->CallObjectMethod(env,thiz,method3);

                             

                   }

          }

}

把

                             (*env)->CallObjectMethod(env,thiz,method3);

改成

 

                             (*env)->CallVoidMethod(env,thiz,method3);