Question

I am calling JNI method from Java app with couple of String arguments.
I am using env->GetStringChars(arg1, 0 ); to get that strings.
Problem is that I sometimes get some extra special characters or string is truncated.

Answer 1

Finally I found a solution

const jchar* raw = env->GetStringChars(string, NULL);
if (raw == NULL)
    return NULL;

wchar_t* wsz = new wchar_t[len+1];
memcpy(wsz, raw, len*2);
wsz[len] = 0;

env->ReleaseStringChars(string, raw);

return wsz;