Necessitas/FAQ
Can I call a C++ method from JAVA?
Yes, using JNI ! Check this example.
Can I call a JAVA method from C++?
Yes, using JNI ! Check this example.
I need Audio support
Sadly, currently Qt has no built in multimedia support ATM, if you need to play wav files, Android API-9 is coming with OpenSLES, if you want to play other formats you can use Android MediaPlayer , check this example.