Android 分页库在第一次和应用过滤器时加载非常缓慢

Question

在我的应用程序中，我有 1,46,000 条记录，在应用分页库时，数据在 10 - 15 秒后加载。在加载的记录上应用过滤器时，加载至少需要 5-10 秒。在分页之前过滤器操作很安静我的项目中使用的库。

@Dao 类看起来像这样`

@Dao
public abstract class MftDao
{
     @Query("SELECT* FROM  transaction_master where AC_NO LIKE :acNo and TXN_ID LIKE :txn_id     order by TXN_DATE DESC")
     public abstract DataSource.Factory<Integer,TransactionMaster> getTotTransactions(String acNo,String txn_id);
}

视图模型看起来像这样

    public class ReportViewModel extends AndroidViewModel {
    private MutableLiveData<TransactionMasterFilter> filter = new MutableLiveData<>();   

    private LiveData<PagedList<TransactionMaster>> transactionMasterList;
    public void setFilter(TransactionMasterFilter filter) {
        this.filter.setValue(filter);
    }

    public ReportViewModel(@NonNull Application application) {
        super(application);
        repository = new Repository(application);
        mftDao = MftDataBase.getInstance(application).getMftDao();
    }

    public void init() {
        transactionMasterList = Transformations.switchMap( filter, new Function<TransactionMasterFilter,       LiveData<PagedList<TransactionMaster>>>() {
            @Override
            public LiveData<PagedList<TransactionMaster>> apply(TransactionMasterFilter input)
            {
                DataSource.Factory<Integer,TransactionMaster> transactionMasterFactory;
                PagedList.Config pagedListConfig =
                        (new PagedList.Config.Builder()).setEnablePlaceholders(true)
                                .setPrefetchDistance(150)
                                .setPageSize(50).build();
                transactionMasterFactory = mftDao.getTotTransactions(input.acNo,input.Txn_id);
                return new LivePagedListBuilder(transactionMasterFactory,pagedListConfig).build();
            }
        } );
    }
   public static class TransactionMasterFilter
    {
        public String Txn_id;
        public String acNo;      

        public void setTxn_id(String txn_id) {
            Txn_id = "%"+txn_id+"%";
        }
        public void setAcNo(String acNo) {
            this.acNo = "%"+acNo+"%";
        }
        public TransactionMasterFilter(String txn_id, String acNo) {
            Txn_id = txn_id;
            this.acNo = acNo;
        }
    }
    public LiveData<PagedList<TransactionMaster>> getTransactionMasterList() {
        return transactionMasterList;
    }
}

最后活动是

    public class DailyReportActivity extends AppCompatActivity {
    ActivityDailyReportBinding dailyReportBinding;

    List<TransactionMaster> transactionMasterList = new ArrayList<>();
    Repository repository;
    ReportViewModel reportViewModel;
    ReportViewModel.TransactionMasterFilter transactionMasterFilter = new ReportViewModel.TransactionMasterFilter("%%","%%");

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate( savedInstanceState );
        dailyReportBinding = DataBindingUtil.setContentView(this, R.layout.activity_daily_report );

        reportViewModel = ViewModelProviders.of(this).get( ReportViewModel.class);
        reportViewModel.setFilter(transactionMasterFilter);
        reportViewModel.init();

        dailyReportBinding.recyclerView.setItemAnimator(new DefaultItemAnimator());

        dailyReportBinding.recyclerView.setLayoutManager(new LinearLayoutManager(getApplicationContext(), LinearLayoutManager.VERTICAL, false));        
        final DailyReportAdapter dailyReportAdapter = new DailyReportAdapter();
        dailyReportBinding.recyclerView.setAdapter(dailyReportAdapter);

        reportViewModel.getTransactionMasterList().observe( this, new Observer<PagedList<TransactionMaster>>() {
            @Override
            public void onChanged(PagedList<TransactionMaster> transactionMasters) {
                Log.e("",String.valueOf(transactionMasters.getLoadedCount()) + ",Tot = "+ transactionMasters.size());
                dailyReportAdapter.submitList(transactionMasters);
            }
        });


        dailyReportBinding.acNoAutoCompleteTextView.addTextChangedListener( new TextWatcher() {
            @Override
            public void beforeTextChanged(CharSequence s, int start, int count, int after) {

            }

            @Override
            public void onTextChanged(CharSequence s, int start, int before, int count)
            {
                String acNo = dailyReportBinding.acNoAutoCompleteTextView.getText().toString();
                transactionMasterFilter.setAcNo(acNo);
                reportViewModel.setFilter(transactionMasterFilter);
            }

            @Override
            public void afterTextChanged(Editable s) {

            }
        });
    }
}

我尝试了很多来找到解决方案，但我没有得到它。我是否需要添加索引或观察LiveData的过程是完全错误的？ . 请给我建议，谢谢您的时间