RecyclerView list Load the picture to refresh the flashing problem Bigsea

2023-01-10   ES  

When doing demand, you need to query some data from the department and conduct business verification of these data (whether to meet the conditions for order creation). This business verification is divided into three major pieces. At the time, this verification process will slow down, so I think of using multi -threaded to check. The following is the practice of code:

    taskDetailList= xxxService.getXxxx();
    if (taskDetailList==null || taskDetailList.size()==0){
           return null;
    final int nThreads = 10;
    final int size = taskDetailList.size();
    ExecutorService executorService = Executors.newFixedThreadPool(nThreads);
    List< Future<DispatchCheckDto>> futures =
        new ArrayList<Future<DispatchCheckDto>>(nThreads);
    try {
       for ( int i = 0; i < size; i++) { 
          final xxxxEntity subEntity = taskDetailList.get(i); 
          Callable<xxxDto> task = new Callable<xxxDto>() { 
                public DispatchCheckDto call() throws Exception { 
                      return checkForThread(subEntity);

       for ( Future<xxxDto> future : futures) {
            xxxDto fuDto = null;
             try {
                  fuDto = future.get();
                   if(fuDto!= null&&StringUtils.isEmpty(fuDto.getFailReason())){
            } catch (InterruptedException e) {
            } catch (ExecutionException e) {
   } finally { 
   long endTimde = System. currentTimeMillis(); "Multi -threaded checking information time consuming:" +(endTimde-startTime)+"ms, check number:" +size);

Look at the code above, which is different from the previous multi -threaded implementation (a multi -threaded before, usually writing a thread class or implementing the Runnable interface), ExecutorService is the new package method of JDK7, mainly in the class to achieve specific concrete in Callable Logic, using ExecutorService.Submit (task) for thread scheduling. In addition, it should be noted that the thread SHUTDOWN created by the ExecutorService in the Finally block is dropped.


Related Posts

I can use the [MATLAB] tool (3) — How to install the MOSEK toolbox

File system Note II, the access speed of the disk drive

JSOUP parsing the error of the file path of the XML report, perfect solution. Patriotic XML uses JSOUP1. Use JSOUP to complete the analysis of Student.xml, and give the parsed data to the Student object, and finally output the object on the console.

Enter a string through the keyboard to determine the most characters in the string and output the character and output number of times

RecyclerView list Load the picture to refresh the flashing problem Bigsea

Random Posts

Commonjs/ES6/AMD module

ubuntu20.04 Virtual environment creation and use Ubuntu20.04 to create a virtual development environment

VC Thinking deeply: I have to say a business in business!

IOS10 adaptation problem

unity custom font new feature one