Superpowered Ndk Android: Returning Int Succeeds In "extern" Block, Fails In Called Function

I'm trying to figure out how to return an int to Java from a C++ function. On the Java side, I have the following in a button. I put it in a button to ensure that the app was compl

Solution 1:

You call returnInt() before SuperpoweredExample(). Therefore you are dereferencing a NULL pointer, example.

Also you didn't return anything from the function declared as returning jint

You need:

extern"C"JNIEXPORT jint Java_com_superpowered_crossexample_MainActivity_returnInt(JNIEnv * __unused javaEnvironment, jobject __unused obj){
    return example->returnInt();
}