我有一個打開新意圖的應用程序。新意圖在數據庫中插入一些行，然后 finish(); 它并返回到第一個屏幕，數據應該已經用新行刷新了。我的代碼在執行時不起作用，但在調試時起作用……所以也許某處有些滯后……也許？如何等待查詢完成？這是我的代碼：在第一個屏幕上：設置適配器和 onResume@Overridepublic View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {    v= inflater.inflate(R.layout.filters_fragment,container,false);    createFragmentWidgets();    myrecyclerview = (RecyclerView) v.findViewById(R.id.contact_recycleview);    recyclerAdapter = new RecyclerViewAdapterFilters(getContext(), lstFilters);    myrecyclerview.setLayoutManager(new LinearLayoutManager((getActivity())));    myrecyclerview.addItemDecoration(new DividerItemDecoration(getContext(), DividerItemDecoration.VERTICAL));    myrecyclerview.setAdapter(recyclerAdapter);    return v;}@Overridepublic void onResume(){  // After a pause OR at startup    super.onResume();    lstFilters = mydb.getAllFilters("BL");    recyclerAdapter.notifyDataSetChanged();}DB 類上的 getAllFilters 方法public List<Filter> getAllFilters(String type) {    List<Filter> lstFilter  = new ArrayList<>();    //hp = new HashMap();    SQLiteDatabase db = this.getReadableDatabase();    Cursor res =  db.rawQuery( "select * from " + FILTERS_TABLE_NAME+" where type='"+type+"'", null );    res.moveToFirst();    while(res.isAfterLast() == false){        lstFilter.add(new Filter (res.getInt(res.getColumnIndex(FILTERS_COLUMN_ID)),                res.getString(res.getColumnIndex(FILTERS_COLUMN_NAME)),                res.getString(res.getColumnIndex(FILTERS_COLUMN_NUMBER)),                res.getString(res.getColumnIndex(FILTERS_COLUMN_PHOTO)),                res.getString(res.getColumnIndex(FILTERS_COLUMN_TYPE))));        res.moveToNext();    }    res.close();    db.close();    return lstFilter;}有任何想法嗎？