Pass an array of integers from C to Java with JNI

Question

Hello,
I have a C function that returns a struct me. The fields of this struct are all of type integer. I, with the fields of this structure create an array of integers in C language I would like to pass this array of integers c, in Java using JNI.
How can I make this?

Answer 1

I don't see how you compiled that.
It certainly will not compile for me.
jintArray position=(jintArray)(*env)->NewIntArray(env,2);That is the invocation idiom for C code.
jint f[2];You cannot have a variable declaration in the middle of a method (block) in C code. That is only allowed in C++.
C code and C++ code is not the same.
The following is C++ code. Note that it does NOT include getBinaryPoint() since that method could be the source of the problem.
jintArray position = env->NewIntArray(2);
if(position==NULL)     return NULL;
jint f[2];
f[0]=3;
f[1]=4;
env->SetIntArrayRegion(position,0,2,f);
return position;