java 线程池ThreadPoolExecutor 如何与 AsyncTask() 组合使用。

 1 ExecutorService fixedThreadPool = Executors.newFixedThreadPool(3);
 2 for (int i = 0; i < 10; i++) {
 3     final int index = i;
 4     fixedThreadPool.execute(new Runnable() {
 5  
 6         @Override
 7         public void run() {
 8             try {
 9                 Log.d("******", Thread.currentThread().getId() + "  thread name: " + Thread.currentThread().getName()+"--"+index);
10                 Thread.sleep(2000);
11             } catch (InterruptedException e) {
12                 // TODO Auto-generated catch block
13                 e.printStackTrace();
14             }
15         }
16     });
17 }

  1 package cn.mr.ams.threadpool;
  2 
  3 import android.app.Activity;
  4 import android.os.AsyncTask;
  5 import android.os.Bundle;
  6 import android.util.Log;
  7 import android.view.Menu;
  8 import android.view.MenuItem;
  9 
 10 import java.util.concurrent.CyclicBarrier;
 11 import java.util.concurrent.ExecutorService;
 12 import java.util.concurrent.Executors;
 13 import java.util.concurrent.ThreadFactory;
 14 
 15 
 16 public class MyActivity extends Activity {
 17 
 18     CyclicBarrier barrier = new CyclicBarrier(3);
 19     public static int j = 0 ;
 20     public final Object myTPLock = new Object();//对象锁，主要用来实现同步，我这里并没有使用
 21     public static ExecutorService myTP = null;//和 AsyncTask() 连用
 22     public static ExecutorService myTP_1 = Executors.newFixedThreadPool(3);//第一种构造函数
 23     //private List<String> test = new ArrayList<String>();
 24 
 25     private String[] test = new String[]{"a--","b--","c--","d--","e--"};
 26 
 27     @Override
 28     protected void onCreate(Bundle savedInstanceState) {
 29         super.onCreate(savedInstanceState);
 30         setContentView(R.layout.activity_my);
 31         //采用 第二种 构造方法，改写下 线程工厂 对象，使每次加入线程池中的线程都能被设置定义的属性
 32         myTP = Executors.newFixedThreadPool(3, new ThreadFactory() {
 33             @Override
 34             public Thread newThread(Runnable r) {
 35                 Thread t = new Thread(r);
 36                 //我把所加入到改线程池的线程全改名了
 37                 t.setName("LinGuanHong");
 38                 // 设置线程的优先级别
 39                 t.setPriority(Thread.NORM_PRIORITY - 1);
 40                 return t;
 41             }
 42         });
 43         for(String item : test) {
 44             //通过 for 循环，把 AsyncTask() 异步线程逐个 加入到线程池中
 45             new myThread(barrier).executeOnExecutor(myTP,item);
 46             //SystemClock.sleep(10);//能起到一定的延时，实现按顺序进行
 47         }
 48         /*for (int i = 0; i < 10; i++) {
 49             final int index = i;
 50             myTP_1.execute(new Runnable() {
 51                 @Override
 52                 public void run() {
 53                     try {
 54                         Log.d("******", Thread.currentThread().getId() + "  thread name: " + Thread.currentThread().getName()+"--"+index);
 55                         Thread.sleep(2000);
 56                     } catch (InterruptedException e) {
 57                         // TODO Auto-generated catch block
 58                         e.printStackTrace();
 59                     }
 60                 }
 61             });
 62         }*/
 63 
 64     }
 65 
 66 
 67 public class myThread extends AsyncTask<Object, Void, String> {
 68     private CyclicBarrier barrier = null;
 69     public myThread(CyclicBarrier barrier){
 70         this.barrier = barrier;
 71     }
 72 
 73     @Override
 74     protected String doInBackground(Object[] params) {
 75         Object id = params[0];
 76         String idString = id.toString();
 77         //synchronized (myTPLock) {
 78         Log.d("******", idString + " id: " + Thread.currentThread().getId() + "  " +
 79                 "thread name: " + Thread.currentThread().getName()+" "+MyActivity.j);
 80         //}
 81         MyActivity.j++;
 82         return null;
 83     }
 84 }
 85 
 86 
 87     @Override
 88     public boolean onCreateOptionsMenu(Menu menu) {
 89         // Inflate the menu; this adds items to the action bar if it is present.
 90         getMenuInflater().inflate(R.menu.my, menu);
 91         return true;
 92     }
 93 
 94     @Override
 95     public boolean onOptionsItemSelected(MenuItem item) {
 96         // Handle action bar item clicks here. The action bar will
 97         // automatically handle clicks on the Home/Up button, so long
 98         // as you specify a parent activity in AndroidManifest.xml.
 99         int id = item.getItemId();
100         if (id == R.id.action_settings) {
101             return true;
102         }
103         return super.onOptionsItemSelected(item);
104     }
105 }