IntentService多线程

IntentService继承自Service，用于异步处理通过startService(Intent intent)方法传递的Intent对象。

该Service根据需要启动

，通过实现onHandleIntent(Intent intent)方法，IntentService会在一个工作线程中，

 

按顺序处理每个Intent对象，直到当工作执行完毕自动销毁。

 

 

 

 

 

实例代码

 

1、启动服务

 

 

 Intent intent = new Intent("iteye.dyingbleed.DownloadService");
 intent.putExtra("url", url); //添加下载地址
 startService(intent);

 

2、配置AndroidManifest

 

3、新建DownloadService类，继承IntentService

 

 

 package lizhen.apk;

 import java.util.concurrent.ExecutorService;
 import java.util.concurrent.Executors;

 import android.app.IntentService;
 import android.content.Intent;

 public class DownloadService extends IntentService {

     private ExecutorService pool;

     public DownloadService() {
         super("DownloadService");
     }

     @Override
     public void onCreate() {
         super.onCreate();
         pool = Executors.newCachedThreadPool();
     }

     @Override
     protected void onHandleIntent(Intent intent) {
         String url = intent.getStringExtra("url");
         pool.execute(new DownloadTask(url));
     }

     @Override
     public void onDestroy() {
         super.onDestroy();
         pool.shutdown();
     }

     private class DownloadTask implements Runnable {

         private final String url;

         public DownloadTask(String url) {
             this.url = url;
         }

         @Override
         public void run() {
             // TODO 此處省略具體實現
         }

     }

 }