http://blog.csdn.net/hellogv/article/details/6406732
在此文章的代码下做部分改动，已适应自己的需要，主要就是改为播放暂停同一个按钮，便于切换。
更主要的是复习定时器，另外在线音频播放不成功以后再研究吧。
播放器控制类
package com.example.mediaplayer;
import java.io.File;
import java.io.FileInputStream;
import java.io.IOException;
import java.util.Timer;
import java.util.TimerTask;
import android.media.AudioManager;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnBufferingUpdateListener;
import android.media.MediaPlayer.OnCompletionListener;
import android.media.MediaPlayer.OnErrorListener;
import android.os.Handler;
import android.os.Message;
import android.util.Log;
import android.widget.SeekBar;
public class Player implements OnBufferingUpdateListener, OnCompletionListener,
MediaPlayer.OnPreparedListener ,OnErrorListener{
public MediaPlayer mediaPlayer;
private SeekBar skbProgress;
private Timer mTimer = new Timer();
public Player() {
try {
mediaPlayer = new MediaPlayer();
mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);
mediaPlayer.setOnBufferingUpdateListener(this);
mediaPlayer.setOnPreparedListener(this);
mediaPlayer.setOnCompletionListener(this);
} catch (Exception e) {
Log.e("mediaPlayer", "error", e);
}
mTimer.schedule(mTimerTask, 0, 1000);
}
public void setProgressBar(SeekBar skbProgress)
{
this.skbProgress = skbProgress;
}
/**
* 通过定时器和Handler来更新进度条
*/
TimerTask mTimerTask = new TimerTask() {
@Override
public void run() {
if (mediaPlayer == null)
return;
if (mediaPlayer.isPlaying() && skbProgress.isPressed() == false) {
handleProgress.sendEmptyMessage(0);
}
}
};
//处理消息
Handler handleProgress = new Handler() {
public void handleMessage(Message msg) {
int position = mediaPlayer.getCurrentPosition();
int duration = mediaPlayer.getDuration();
if (duration > 0) {
int pos = skbProgress.getMax() * position / duration;
skbProgress.setProgress(pos);
}
};
};
//初始播放
public void playUrl(String videoUrl) {
try {
mediaPlayer.reset();
mediaPlayer.setDataSource(videoUrl);
mediaPlayer.prepare();// prepare之后自动播放
// File file = new File(videoUrl);
// FileInputStream fis = new FileInputStream(file);
// mediaPlayer.setDataSource(fis.getFD());
// mediaPlayer.prepare();
} catch (IllegalArgumentException e) {
e.printStackTrace();
} catch (IllegalStateException e) {
e.printStackTrace();
} catch (IOException e) {
e.printStackTrace();
}
}
//暂停
public void pause() {
mediaPlayer.pause();
}
//播放
public void play() {
mediaPlayer.start();
}
//停止
public void stop() {
if (mediaPlayer != null) {
mediaPlayer.stop();
mediaPlayer.release();
mediaPlayer = null;
}
}
//判断是否正在播放
public boolean isplaying()
{
boolean playing = mediaPlayer.isPlaying();
return playing;
}
/**
* 通过onPrepared播放
*/
public void onPrepared(MediaPlayer arg0) {
arg0.start();
Log.e("mediaPlayer", "onPrepared");
}
public void onCompletion(MediaPlayer arg0) {
Log.e("mediaPlayer", "onCompletion");
}
public void onBufferingUpdate(MediaPlayer arg0, int bufferingProgress) {
skbProgress.setSecondaryProgress(bufferingProgress);
int currentProgress = skbProgress.getMax()
* mediaPlayer.getCurrentPosition() / mediaPlayer.getDuration();
Log.e(currentProgress + "% play", bufferingProgress + "% buffer");
}
public boolean onError(MediaPlayer mp, int what, int extra) {
return false;
}
}
界面类
package com.example.mediaplayer;
import java.io.BufferedInputStream;
import java.io.BufferedOutputStream;
import java.io.BufferedReader;
import java.io.BufferedWriter;
import java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
import android.app.Activity;
import android.os.Bundle;
import android.os.Environment;
import android.view.View;
import android.view.View.OnClickListener;
import android.widget.Button;
import android.widget.SeekBar;
public class TestMedia extends Activity {
private Button btnPause, btnPlayUrl, btnStop;
private SeekBar skbProgress;
private Player player;
private int first;
@Override
public void onCreate(Bundle savedInstanceState) {
super.onCreate(savedInstanceState);
setContentView(R.layout.main);
this.setTitle("在线音乐播放---hellogv编写");
btnPlayUrl = (Button) this.findViewById(R.id.btnPlayUrl);
btnPlayUrl.setOnClickListener(new ClickEvent());
btnPause = (Button) this.findViewById(R.id.btnPause);
btnPause.setOnClickListener(new ClickEvent());
btnStop = (Button) this.findViewById(R.id.btnStop);
btnStop.setOnClickListener(new ClickEvent());
skbProgress = (SeekBar) this.findViewById(R.id.skbProgress);
skbProgress.setOnSeekBarChangeListener(new SeekBarChangeEvent());
player = new Player();
}
class ClickEvent implements OnClickListener {
public void onClick(View arg0) {
player.setProgressBar(skbProgress);
if (arg0 == btnPause) {// 播放暂停按钮
if (player.isplaying())// 如果正在播放则暂停
{
player.pause();
btnPause.setText("播放");
} else// 如果暂停则播放
{
btnPause.setText("暂停");
if (first == 0)// 初始播放
{
String luyin_Path = Environment
.getExternalStorageDirectory()
.getAbsolutePath()
+ "/" + "she.mp3";
player.playUrl(luyin_Path);
} else// 继续播放
{
player.play();
}
}
first++;
} else if (arg0 == btnPlayUrl) {
// // 在百度MP3里随便搜索到的,大家可以试试别的链接
// String url = "http://219.138.125.22/myweb/mp3/CMP3/JH19.MP3";
// player.playUrl(url);
String music_path = "http://stream19.qqmusic.qq.com/30974808.mp3";
player.playUrl(music_path);
} else if (arg0 == btnStop) {
player.stop();
}
}
}
class SeekBarChangeEvent implements SeekBar.OnSeekBarChangeListener {
int progress;
public void onProgressChanged(SeekBar seekBar, int progress,
boolean fromUser) {
// 原本是(progress/seekBar.getMax())*player.mediaPlayer.getDuration()
this.progress = progress * player.mediaPlayer.getDuration()
/ seekBar.getMax();
}
public void onStartTrackingTouch(SeekBar seekBar) {
}
public void onStopTrackingTouch(SeekBar seekBar) {
// seekTo()的参数是相对与影片时间的数字，而不是与seekBar.getMax()相对的数字
player.mediaPlayer.seekTo(progress);
}
}
}
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