Android 非同步任務 代碼很簡短，簡單非同步工具封裝，方便執行非同步任務

標籤：

比較簡單，就3個類。

1、建立一個單例的線程池，用來執行非同步任務

<pre name="code" class="java">package com.ferris.pool;import java.util.concurrent.ExecutorService;import java.util.concurrent.Executors;public class FerrisPoolManager {private ExecutorService service;private FerrisPoolManager() {int num = Runtime.getRuntime().availableProcessors();service = Executors.newFixedThreadPool(num * 2);}private static FerrisPoolManager manager;public static FerrisPoolManager getInstance() {if (manager == null) {synchronized (FerrisPoolManager.class) {if(manager == null) {manager = new FerrisPoolManager();}}}return manager;}public void addTask(Runnable runnable) {service.execute(runnable);}public void cancelTask(){service.shutdown();}}

2、定義一個任務介面

package com.ferris.pool;public interface FerrisTaskListem {public void get();  //運行線上程裡public void update(); //運行在主線程（從哪裡new就是哪個線程，也不一定是主線程service等）}

3、任務執行對象

package com.ferris.pool;import android.os.Handler;import android.os.Message;public class FerrisTask {private FerrisTaskListem taskListem;private Handler handler = new Handler() {public void handleMessage(android.os.Message msg) {if(taskListem!=null){taskListem.update();}};};public FerrisTask(FerrisTaskListem taskListem) {this.taskListem = taskListem;}public void Execute(){FerrisPoolManager.getInstance().addTask(new RunTask());}public class RunTask implements Runnable {@Overridepublic void run() {// TODO Auto-generated method stubif(taskListem!=null){taskListem.get();}Message message=Message.obtain();handler.sendMessage(message);}}}

4、使用方法

FerrisTask ferrisTask = new FerrisTask(new FerrisTaskListem() {@Overridepublic void update() {  //主線程// TODO Auto-generated method stubString name = Thread.currentThread().getName();System.out.print(name);}@Overridepublic void get() { //UI線程// TODO Auto-generated method stubString name = Thread.currentThread().getName();System.out.print(name);}});ferrisTask.Execute();

Android 非同步任務 代碼很簡短，簡單非同步工具封裝，方便執行非同步任務