如何通过名单 <T> 从Java到使用JNA的C ++ std :: vector函数参数

Question

I have a native function :

int NativeFunction(std::vector<MyObject>);

I am loading the Native dll using JNA and I am trying to call this function NativeFunction from Java like:

nativedlljnapointer.NativeFunction(List<MyObject>);

I am however running into "java.lang.IllegalArgumentException: Unsupported argument type ArrayList" exception.

I al tried using java util vector when I am running into the same exception "java.lang.IllegalArgumentException: Unsupported argument type java.util.Vector"

Can someone suggest me how I could pass List from my Java function to the native function which has vector<> as an argument.

Any help will be greatly appreciated.

Answer 1

std::vector and java List are completely different types, it's normal for them not to work.

Furthermore , Is MyObject a C++ defined object or a Java defined object (if you define one in each, they are again, completely different objects ! )?

The best and safest way to communicate via JNI is to use serialization, like you would between any two different environments.

Granted, it takes a bit of extra work, but in the long run you end up with more robust code.