android四大组件之Service 从网络上播放音乐

package com.example.musicplay;

import java.io.InputStream;
import java.io.Reader;
import java.math.BigDecimal;
import java.net.URL;
import java.sql.Array;
import java.sql.Blob;
import java.sql.Clob;
import java.sql.Connection;
import java.sql.Date;
import java.sql.NClob;
import java.sql.ParameterMetaData;
import java.sql.PreparedStatement;
import java.sql.Ref;
import java.sql.ResultSet;
import java.sql.ResultSetMetaData;
import java.sql.RowId;
import java.sql.SQLException;
import java.sql.SQLWarning;
import java.sql.SQLXML;
import java.sql.Time;
import java.sql.Timestamp;
import java.util.Calendar;

import android.app.Service;
import android.content.Intent;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnPreparedListener;
import android.os.Binder;
import android.os.IBinder;

public class PlayService extends Service {
    private MediaPlayer mediaPlayer;
    @Override
    public IBinder onBind(Intent intent) {
        // TODO: Return the communication channel to the service.
        return new MusicBinder();
    }
    class MusicBinder extends Binder implements PlayInterface{

        @Override
        public void play() {
            // TODO Auto-generated method stub
            PlayService.this.play();
        }

        @Override
        public void playContiue() {
            // TODO Auto-generated method stub
            PlayService.this.playContiue();
        }

        @Override
        public void pause() {
            // TODO Auto-generated method stub
            PlayService.this.pause();
            
        }
        
    }
    @Override
    public void onCreate() {
        mediaPlayer = new MediaPlayer();
    }
    
    private void play(){
        //重置
        mediaPlayer.reset();
        try {
            mediaPlayer.setDataSource("http://192.168.21.1:8080/ok/Charlotte Perrelli - Hero.mp3");
            //准备
            mediaPlayer.prepareAsync();
        } catch (Exception e) {
            // TODO Auto-generated catcssh block
            e.printStackTrace();
        }
        mediaPlayer.setOnPreparedListener(new OnPreparedListener() {
            //准备完毕此方法调用
            @Override
            public void onPrepared(MediaPlayer arg0) {
                // TODO Auto-generated method stub
                mediaPlayer.start();
            }
        });
    }
    private void playContiue(){
        mediaPlayer.start();
    }
    private void pause(){
        mediaPlayer.pause();
    }
}