android - 这是从 fragment 访问数组列表的正确方法吗？

Question

只需要知道访问在不同类中创建的数组的正确语法。

public class item_fragment extends Fragment {

 ArrayList<MyItems> mylist;

 @Override
 public View onCreateView(  LayoutInflater inflater,
                             ViewGroup container,
                             Bundle savedInstanceState) {



         mylist =   ((MyApplication)  getActivity().getApplication()).getItemsArrayList();

    return inflater.inflate(R.layout.course_work_item_fragment,container, false);
}//ends onCreate View
}

Answer 1

我建议看看 Pass ArrayList from fragment to another fragment(extends ListFragment) using bundle, seListAdapter runtime error

这包括

One thing if you read your code carefully, you have declared ArrayAdapter in Monday_fragment, so this list initialize every time when you replace this fragment with other. So just create a ArrayAdapter in MainActivity and getter, setter for the same and change your methode ArrayList toStringList(Collection entryLogs) in the Monday_fragment like below