Question

I have a non-public final class that looks like the following:

final class FragmentManagerImpl {
    ...
}

Note that it is not public and it has no declared constructors.

I would like to instantiate an instance of this class using reflection. However, both of the following code snippets result in IllegalAccessExceptions:

        // BUG IllegalAccessException on calling newInstance
        final Class c = Class.forName("android.support.v4.app.FragmentManagerImpl");
        c.newInstance();

        // BUG IllegalAccessException on calling newInstance
        final Class c = Class.forName("android.support.v4.app.FragmentManagerImpl");
        final Constructor constructor = c.getDeclaredConstructor();
        constructor.setAccessible(true);
        constructor.newInstance();

What is the correct way to instantiate this class from a package that is not android.support.v4.app?

Answer 1

Hm, it appears to have been user error. Using the constructor method outlined in the question does seem to have worked properly.