countinue Executors.newFixedThreadPool完成其作業後的方法

我有一個方法。在這個方法中，我由Executors運行一個任務。其工作是從服務器獲取數據並填寫結果Arraylist。countinue Executors.newFixedThreadPool完成其作業後的方法

public Paginator(String secSrv, int total, ExecutorService executorService, Cookie cookie) { 
    securitySrv = secSrv; 
    totalItems = total; 
    this.executorService = executorService; 
    this.cookie = cookie; 
} 

ArrayList<Suser> results = new ArrayList<>(); 

public ArrayList<Suser> generatePage(int currentPage) { 

    fetchAllUsers(currentPage); 
    ...... 
    for (int i = startItem; i < startItem + numOfData; i++) { 
      pageData.add(results.get(i-1)); 
     }

填充後的結果ArrayList中我必須使用此arraylist.how coud我知道ExecutorService的完成自己的工作，我可以再繼續我的方法是什麼？

private void fetchAllUsers(final int currentPage) { 

    Runnable fetchUserListFromSrv = new Runnable() { 
     @Override 
     public void run() { 
      android.os.Process.setThreadPriority(android.os.Process.THREAD_PRIORITY_BACKGROUND); 
      JSONObject count = new JSONObject(); 
      try { 
       count.put("count", 10); 
       count.put("page", currentPage); 
       String SearchUsersPagingResult = ... 
       results.addAll(susers) ; 
      } catch (JSONException e) { 
       e.printStackTrace(); 
      } 

     } 
    }; 

    executorService.submit(fetchUserListFromSrv); 
}

來源

2017-11-25 Groot