代码适用于模拟器，但不能在真实设备上运行

Question

所以，当我在Android模拟器上运行我的项目时 - 一切都很完美。但是当我在两部智能手机上测试项目时 - 这部分代码总是不能正常工作。此片段必须显示有关服务器事务的一些信息。那是来自模拟器的screenshot。这是我的一部智能手机的screenshot。两个测试都有相同的.apk文件。有时，在真实设备上所有都可以正常运行，但我不知道，它是如何工作的。我曾尝试清理/重建项目。其他片段工作正常，因此它与服务器或sid无关。

import android.os.Bundle;
import android.support.v4.app.Fragment;
import android.support.v7.widget.LinearLayoutManager;
import android.support.v7.widget.RecyclerView;
import android.util.Log;
import android.view.LayoutInflater;
import android.view.View;
import android.view.ViewGroup;
import android.widget.Toast;

import com.Penok.API.APIUtils;
import com.Penok.API.Model;
import com.Penok.API.PenyokService;
import com.Penok.API.TransactionsListModel;

import java.util.ArrayList;
import java.util.List;

import retrofit2.Call;
import retrofit2.Callback;
import retrofit2.Response;

public class TransactionsFragment extends Fragment {

private PenyokService transactionsService;
private RecyclerView transactionsRecyclerView;
private TransactionsAdapter transactionsAdapter;
private ArrayList<String> authorNames;
private ArrayList<String> payeeNames;
private ArrayList<String> payerNames; 
private ArrayList<TransactionsListModel> transactions;
private int authorCounter = 0;
private int payeeCounter = 0;
private int payerCounter = 0;
private int size = 0;

public TransactionsFragment() {
}

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


    transactionsRecyclerView = (RecyclerView) inflater.inflate(R.layout.fragment_recycle, container, false);

    transactionsService = APIUtils.getPService();
    transactions = new ArrayList<>();
    authorNames = new ArrayList<>();
    payeeNames = new ArrayList<>();
    payerNames = new ArrayList<>();


    transactionsRecyclerView = (RecyclerView) inflater.inflate(R.layout.fragment_recycle, container, false);
    transactionsAdapter = new TransactionsAdapter(new ArrayList<TransactionsListModel>(0),
            new ArrayList<String>(0), new ArrayList<String>(0), new ArrayList<String>(0));
    transactionsRecyclerView.setAdapter(transactionsAdapter);
    LinearLayoutManager layoutManager = new LinearLayoutManager(getActivity());
    transactionsRecyclerView.setLayoutManager(layoutManager);
    loadTransactions();

    return transactionsRecyclerView;
}

private void loadTransactions() {
    transactionsService.getTransactionsHistory(MainActivity.getSid()).enqueue(new Callback<Model>() {

        @Override
        public void onResponse(Call<Model> call, Response<Model> response) {
            if(response.isSuccessful()) {

                if (response.body().getTransactionsList() != null) {
                    Toast.makeText(getActivity(), "not null", Toast.LENGTH_SHORT).show();
                    transactions.addAll(response.body().getTransactionsList());
                    size = transactions.size();
                    for (int i = 0; i < transactions.size(); i++) {
                        loadNames(transactions.get(i).getAuthor(), "author");
                        loadNames(transactions.get(i).getPayee(), "payee");
                        loadNames(transactions.get(i).getPayer(), "payer");
                    }
                }
                else
                    Toast.makeText(getActivity(), "null", Toast.LENGTH_SHORT).show();

                needToUpdate(authorCounter, payeeCounter, payerCounter,
                        size, transactions, authorNames, payeeNames, payerNames);

                // transactionsAdapter.updateTransactions(response.body().getTransactionsList());
            } else
                Toast.makeText(getActivity(), "loadTransactions", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onFailure(Call<Model> call, Throwable t) {
            Toast.makeText(getActivity(), t.toString(), Toast.LENGTH_SHORT).show();
        }
    });
}

private void loadNames(final int id, final String key){
    transactionsService.getUserName(id, MainActivity.getSid()).enqueue(new Callback<Model>() {

        @Override
        public void onResponse(Call<Model> call, Response<Model> response) {
            if(response.isSuccessful()) {
                switch (key) {
                    case "author":
                        authorNames.add(response.body().getNameFor());
                        authorCounter++;
                        break;
                    case "payee":
                        payeeNames.add(response.body().getNameFor());
                        payeeCounter++;
                        break;
                    case "payer":
                        payerNames.add(response.body().getNameFor());
                        payerCounter++;
                        break;
                }
                //transactionsAdapter.updateTransactions(response.body().getTransactionsList());
                needToUpdate(authorCounter, payeeCounter, payerCounter, size,
                        transactions, authorNames, payeeNames, payerNames);
            } else
                Toast.makeText(getActivity(), "loadNames", Toast.LENGTH_SHORT).show();
        }

        @Override
        public void onFailure(Call<Model> call, Throwable t) {
            Toast.makeText(getActivity(), t.toString(), Toast.LENGTH_SHORT).show();
        }
    });
}

private void needToUpdate(int authorCounter,
                          int payeeCounter,
                          int payerCounter,
                          int size,
                          List<TransactionsListModel> response,
                          ArrayList<String> authorNames,
                          ArrayList<String> payeeNames,
                          ArrayList<String> payerNames){
    if ((authorCounter == size) && (payeeCounter == size) && (payerCounter == size)) {
        transactionsAdapter.updateTransactions(response, authorNames, payeeNames, payerNames);
    }
}

}

此外，在真实设备上显示两个toast（已添加以测试此问题）：

• not null
• loadNames