android在线音乐

一种方法是调用android自带的播放器

//调用系统自带播放器		Intent intent = new Intent();		Uri uri = Uri.parse("http://mul1.tximg.cn/music/group/bbs/mp3/44/100715/1279159638887.mp3?z=909255638");		intent.setDataAndType(uri, "audio/*");		intent.setAction(Intent.ACTION_VIEW);		startActivity(intent);

这只是一种思路，参考别人的代码，实现分段下载，但是我的代码还很不完善，这方面不准备继续下去了。

package com.sharpandroid.music.activity;import java.io.IOException;import android.app.Activity;import android.content.Intent;import android.net.Uri;import android.os.Bundle;import android.util.Log;import android.view.View;import android.widget.Button;import android.widget.ImageButton;import android.widget.SeekBar;import android.widget.TextView;import com.sharpandroid.music.R;import com.sharpandroid.music.StreamingMediaPlay2;import com.sharpandroid.music.StreamingMediaPlayer;public class MediaPlayer extends Activity {	private Button streamButton;	private ImageButton playButton;	private boolean isPlaying;	private TextView playTime;	private StreamingMediaPlayer audioStreamer;	private StreamingMediaPlay2 audioStreamer2;	    @Override	public void onCreate(Bundle icicle) {    	        super.onCreate(icicle);        setContentView(R.layout.main);        initControls();    }         private void initControls() {    	playTime=(TextView) findViewById(R.id.playTime);		streamButton = (Button) findViewById(R.id.button_stream);				streamButton.setOnClickListener(new View.OnClickListener() {			public void onClick(View view) {				startStreamingAudio();        }});		playButton = (ImageButton) findViewById(R.id.button_play);		playButton.setEnabled(false);		playButton.setOnClickListener(new View.OnClickListener() {			public void onClick(View view) {				if (audioStreamer2.getMediaPlayer().isPlaying()) {					audioStreamer2.getMediaPlayer().pause();					playButton.setImageResource(R.drawable.button_play);				} else {					audioStreamer2.getMediaPlayer().start();					//audioStreamer.startPlayProgressUpdater();					playButton.setImageResource(R.drawable.button_pause);				}				isPlaying = !isPlaying;        }});    }        private void startStreamingAudio() {    	final SeekBar progressBar = (SeekBar) findViewById(R.id.progress_bar);		if ( audioStreamer != null) {			audioStreamer.interrupt();		}		//调用系统自带播放器//		Intent intent = new Intent();//		Uri uri = Uri.parse("http://mul1.tximg.cn/music/group/bbs/mp3/44/100715/1279159638887.mp3?z=909255638");//		intent.setDataAndType(uri, "audio/*");//		intent.setAction(Intent.ACTION_VIEW);//		startActivity(intent);    		audioStreamer2 = new StreamingMediaPlay2(this, playButton, streamButton,  progressBar, playTime);      		audioStreamer2.startStreaming("http://mul1.tximg.cn/music/group/bbs/mp3/44/100715/1279159638887.mp3?z=909255638",5208, 216);    		streamButton.setEnabled(false);    	    	    }}

 下一个文件

package com.sharpandroid.music;import java.io.File;import java.io.FileInputStream;import java.io.FileOutputStream;import java.io.IOException;import java.io.InputStream;import java.net.MalformedURLException;import java.net.URL;import java.net.URLConnection;import android.content.Context;import android.media.AudioManager;import android.media.MediaPlayer;import android.os.Handler;import android.os.Message;import android.util.Log;import android.widget.Button;import android.widget.ImageButton;import android.widget.SeekBar;import android.widget.TextView;public class StreamingMediaPlay2 {	private static final int INTIAL_KB_BUFFER =  96*10/8;//assume 96kbps*10secs/8bits per byte	private ImageButton playButton;	private SeekBar 	progressBar;	private TextView playTime;	private long mediaLengthInKb, mediaLengthInSeconds;	private int totalKbRead = 0;	private File downloadingMediaFile;	private Context context;	String url ;	int progress_leng;	private MediaPlayer 	mediaPlayer;	private static final int DOWN_UPDATE = 1;	boolean isplay = true;	int playe = 0;	private static final int DOWN_OVER = 2;	private int progress;		private final Handler handler = new Handler()	{		@Override		public void handleMessage(Message msg) {			//super.handleMessage(msg);			switch (msg.what) {			case DOWN_UPDATE:				progressBar.setProgress(progress);				break;			case DOWN_OVER:				System.out.println("下载完成");				break;			}		}	};	public StreamingMediaPlay2(Context  context, ImageButton	playButton, Button	streamButton, SeekBar	progressBar,TextView playTime)  	{ 		this.context = context;		this.playButton = playButton;		this.playTime=playTime; //播放的进度时刻		this.progressBar = progressBar;	}		public void startStreaming(final String mediaUrl, long	mediaLengthInKb, long	mediaLengthInSeconds) throws IOException {    //	this.mediaLengthInKb = mediaLengthInKb;    	//this.mediaLengthInSeconds = mediaLengthInSeconds;		url = mediaUrl;		Thread down = new Thread(download);		down.start();    }		Runnable download = new Runnable(){		@Override		public void run() {			// TODO Auto-generated method stub			URLConnection cn;			try {				cn = new URL(url).openConnection();				progress_leng = cn.getContentLength();				System.out.println("play-------------------77------长度------"+progress_leng);				cn.connect();        	        InputStream stream = cn.getInputStream();	        if (stream == null) {	        	Log.e(getClass().getName(), "Unable to create InputStream for mediaUrl:" + url);	        }			downloadingMediaFile = new File(context.getCacheDir(),"downloadingMedia.dat");						if (downloadingMediaFile.exists()) {				downloadingMediaFile.delete();          //如果下载完成则删除			}	        FileOutputStream out = new FileOutputStream(downloadingMediaFile);   	        byte buf[] = new byte[1024*10];	        int numread = -1;	        int s = 0;	        int count = 0;	        int a = 0;	        int sum = 0;	        FileOutputStream out1 = null;	      //  int totalBytesRead = 0, incrementalBytesRead = 0;	        while((numread = stream.read(buf))!=-1){	        		        	byte [] b = new byte[numread];	        	//System.out.println("输出numread的值-----------"+numread);	        		        	//System.out.println(a+"----输出numread的值-----------"+sum);	        	if(a==0||a%88==0){	        			        		File file = new File(context.getCacheDir(),"play"+(++count)+".dat");	        		System.out.println("输出count的值-----------"+count);		        	 out1 = new FileOutputStream(file,true);		        		        	} 	        	 a++;	        	sum +=numread;	        	if(out1!=null){	        	//b=buf;        		out1.write(buf,0,numread);	        	}	            out.write(buf, 0, numread);	            s+=numread;	            progress = (int) (((float) s / progress_leng) * 100);	            handler.sendEmptyMessage(DOWN_UPDATE);	            if(a==150){	            	System.out.println("下载完成了");	            	//播放音乐	            	Thread thread = new Thread(play);	            	thread.start();	            	 handler.sendEmptyMessage(DOWN_OVER);	            }	         //   totalBytesRead += numread;	       //     incrementalBytesRead += numread;	        //    totalKbRead = totalBytesRead/1000;  //totalKbRead表示已经下载的文件大小	           // testMediaBuffer();	        //   	fireDataLoadUpdate();	        }   	       					} catch (MalformedURLException e) {				// TODO Auto-generated catch block				e.printStackTrace();			} catch (IOException e) {				// TODO Auto-generated catch block				e.printStackTrace();			}   		}					};	//播放音乐	 public MediaPlayer getMediaPlayer() {	    	return mediaPlayer;		}	    private MediaPlayer createMediaPlayer(File mediaFile)	    throws IOException {	    	MediaPlayer mPlayer = new MediaPlayer();	    	mPlayer.setOnErrorListener(					new MediaPlayer.OnErrorListener() {				        public boolean onError(MediaPlayer mp, int what, int extra) {				        	Log.e(getClass().getName(), "Error in MediaPlayer: (" + what +") with extra (" +extra +")" );				    		return false;				        }				    });			FileInputStream fis = new FileInputStream(mediaFile);						mPlayer.setDataSource(fis.getFD());//此方法返回与流相关联的文件说明符。			mPlayer.prepare();						return mPlayer;	    }	    	    private void startMediaPlayer() {	        try {   	        	System.out.println("开始播放音乐");	        	File bufferedFile = new File(context.getCacheDir(),"play1" + ".dat");	        //	moveFile(downloadingMediaFile,bufferedFile);	        	Log.e(getClass().getName(),"Buffered File path: " + bufferedFile.getAbsolutePath());	        	Log.e(getClass().getName(),"Buffered File length: " + bufferedFile.length()+"");	        	mediaPlayer = createMediaPlayer(bufferedFile);	        	System.out.println(mediaPlayer.getDuration()+"------开始播放170---------------"+mediaPlayer.getCurrentPosition());	        		        	mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);		    	mediaPlayer.start();		    	//startPlayProgressUpdater();    		    			//	playButton.setEnabled(true);	        } catch (IOException e) {	        	Log.e(getClass().getName(), "Error initializing the MediaPlayer.", e);	        }   	    }	    //播放MP3	Runnable play = new Runnable() {				@Override		public void run() {			// TODO Auto-generated method stub			while(isplay){				  try {   			        	System.out.println("开始播放音乐");//			        	File bufferedFile2 = new File(context.getCacheDir(),"play"+ (playe+1)+ ".dat");//			        	if(!bufferedFile2.exists()){//			        		isplay = false;//			        	}			        	File bufferedFile = new File(context.getCacheDir(),"play"+ (++playe)+ ".dat");			        	System.out.println("文件的名字为-------------"+playe);			        	if(bufferedFile.exists()){			        		mediaPlayer = createMediaPlayer(bufferedFile);			        		System.out.println(mediaPlayer.getDuration()+"------开始播放170---------------"+mediaPlayer.getCurrentPosition());			        		mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);					    	mediaPlayer.start();					    	isplay = false;					    	try {								Thread.sleep(120000);								isplay = true;							} catch (InterruptedException e) {								// TODO Auto-generated catch block								e.printStackTrace();							}    				        	}			        	else{			        		System.out.println("文件不存在----------------");			        		isplay = false;			        		try {								Thread.sleep(10000);								isplay = true;							} catch (InterruptedException e) {								// TODO Auto-generated catch block								e.printStackTrace();							}			        	}      					    	//startPlayProgressUpdater();    				    					//	playButton.setEnabled(true);			        } catch (IOException e) {			        	Log.e(getClass().getName(), "Error initializing the MediaPlayer.", e);			        }   			}		}	};	 }

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