如何在jni接口中将值放入字节数组中

jbyteArray byteArray = (*env)->NewByteArray(env, length);
jsize arrayLength = (*env)->GetArrayLength(env, byteArray);

jbyte* arrayPointer = (*env)->GetByteArrayElements(env, byteArray, NULL);
(*env)->SetByteArrayRegion(env, byteArray, 0, length, (jbyte*)value);

(*env)->ReleaseByteArrayElements(env, byteArray, arrayPointer, 0);

JNIEXPORT void JNICALL Java_com_example_MyClass_setValue(JNIEnv* env, jobject obj, jbyteArray byteArray, jint length, jbyte value) {
    jbyte* arrayPointer = (*env)->GetByteArrayElements(env, byteArray, NULL);
    (*env)->SetByteArrayRegion(env, byteArray, 0, length, (jbyte*)value);
    (*env)->ReleaseByteArrayElements(env, byteArray, arrayPointer, 0);
}