定义一个Service
例如AudioService 继承自android.app.Service
AudioService.java
package com.outsider.service;
import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.net.Uri;
import android.os.IBinder;
public class AudioService extends Service {
private MediaPlayer mp;
private String query;
@Override
public void onCreate() {
System.out.println(