java - How to know the jclass to which a jobject belongs (JNI)

Question

I need to call the same native C method from my JNI code. This method receives a generic jobject object, but its behavior is different depending on the type of the object itself.

I have two jclass objects, named activityCls and fragmentCls (which respectively map an Activity class and a Fragment class in Java). What can I do in order to know if the given jobject object is of kind activityCls or fragmentCls?

Answer 1

How about using IsInstanceOf?

IsInstanceOf

jboolean IsInstanceOf(JNIEnv *env, jobject obj, jclass clazz);

Tests whether an object is an instance of a class.

JNI documentation