Class Extending Fragment - Error Says Make Sure Class Name Exists, Is Public, And Has An Empty Constructor That Is Public

I have a class like this: class TopicFragment extends Fragment{ public TopicFragment(VO vO) { // some code } } Users are reporting that the app is crashing and the log

Solution 1:

Just simply add an empty constructor with no parameters which is public. if you have the fragment set in XML without an empty constructor it cannot be created.

publicTopicFragment() {
}

I also usually always have just the empty constructor and have a method like this to instantiate with arguments

publicstatic TopicFragment newInstance(VO vo) {
    TopicFragmentfragment=newTopicFragment();
    fragment.setVo(vo);
    return fragment;
}

EDIT: and as the guys said in the comments make your class:

publicclassTopicFragment {
}