Using vendor-supplied JAR file with Necessitas

[PhilipM2]

Hi,
I'm writing an application with Necessitas in Qt Creator, and need to use a vendor-supplied Jar file in order to access the serial port of the Android device. However, I'm not sure how to include the Jar file in the project so that I can use it, because when I use the following code:

@JavaVM* currVM = (JavaVM *)QApplication::platformNativeInterface()->nativeResourceForWidget("JavaVM", 0);

currVM->GetEnv( (void**)&env, JNI_VERSION_1_6);
jclass cls = 0;
cls = env->FindClass("com/vendor/SerialPort");
env->ExceptionDescribe();@

To try and get a reference to the appropriate Java class, it fails to do so, giving this message from ExceptionDescribe() : W/System.err( 2116): java.lang.NoClassDefFoundError: [generic] at dalvik.system.NativeStart.main(Native Method)

If I try any other Java or Android class, it works correctly, so obviously I need to do something else to make the JAR available to my project when using Qt Creator - Does anybody know what? There’s plenty of information on how to do this with Eclipse, but I haven’t been able to make this work with Qt Creator at all.