public class DiaryFragment extends Fragment { private ArrayList<Diary> diaries;    Context context; public void initDiary(){ diaries = DatabaseCRUD.selectALL( context );    } @Override public View onCreateView( @NonNull LayoutInflater inflater, ViewGroup container,            Bundle savedInstanceState) { context = getContext();        View view = inflater.inflate( R.layout.content_main, container, false ); //读取数据库日记内容 initDiary();        RecyclerView diary_view = view.findViewById( R.id.diary_view );public class DiaryFragment extends Fragment { private ArrayList<Diary> diaries;    Context context; public void initDiary(){ diaries = DatabaseCRUD.selectALL( context );    } @Override public View onCreateView( @NonNull LayoutInflater inflater, ViewGroup container,            Bundle savedInstanceState) { http://www.izswenda.comcontext = getContext();        View view = inflater.inflate( R.layout.content_main, container, false ); //读取数据库日记内容 initDiary();        RecyclerView diary_view = view.findViewById( R.id.diary_view );        LinearLayoutManager layoutManager = new LinearLayoutManager(context);        diary_view.setLayoutManager(layoutManager);        DiaryAdapter adapter= new DiaryAdapter(diaries);        diary_view.setAdapter(adapter); return view;    }}        LinearLayoutManager layoutManager = new LinearLayoutManager(context);        diary_view.setLayoutManager(layoutManager);        DiaryAdapter adapter= new DiaryAdapter(diaries);        diary_view.setAdapter(adapter); return view;    }}