My JNI codes get NoSuchMethodException when release to user

Question

My JNI codes run well in my development environment(JBuilder7), but when they release to user, they get java.lang.NoSuchMethodException. The error generates when the C++ code try to call the java side method.
The release package was built by my colleague. And I found that they obfuscate my codes after the normal build work.
So I wonder is this the reason I got NoSuchMethodException ?
Thanks in advance!

Answer 1

Yes. I have figured out that it is the obfuscator causes the problem.
I have spent too much time and energy in sloving the problem, so I think it might be worthwhile to write down what I have learned and let others avoid the same pitfall.
A common trick played by obfuscate is to change the method and variable, so that a line of code that once said:
draw(imageList.get(i));
may change to
a(b.a(c));
When my c++ code try to call the java-side code using GetMethodID(..."draw"...) or GetStaticMethodID(..."draw"...), it will, of course, cause the NoSuchMethodException
After I skipping obfuscating the Java classes called by the c++ codes, the problem solves.
Thank you very much