root/trunk/25.AudioTest/src/soo/audio/AudioTest.java

package soo.audio;

import java.io.File;
import java.io.FilenameFilter;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;

import android.app.ListActivity;
import android.media.MediaPlayer;
import android.media.MediaPlayer.OnCompletionListener;
import android.os.Bundle;
import android.view.View;
import android.widget.ArrayAdapter;
import android.widget.ListView;
import android.widget.TextView;
import android.widget.Toast;

public class AudioTest extends ListActivity {
    /** Called when the activity is first created. */
        private static final String PATH="/sdcard/";
        private List<String> list = new ArrayList<String>();
        private MediaPlayer mp = new MediaPlayer();
        private int cPosition = 0; //��� ��� ��������
        private TextView tv;
    @Override
    public void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);
        setContentView(R.layout.main);
        
        tv = (TextView)findViewById(R.id.textVeiw02);
        setAdapter();
        
    }
    
    private void setAdapter(){
        File f = new File(PATH);
        if(f.listFiles(new Filter()).length>0){
                for(File fChild : f.listFiles(new Filter())){
                        list.add(fChild.getName());
                }
                ArrayAdapter<String> aa 
                        = new ArrayAdapter<String>(this, R.layout.item,list);
                //setListAdapter(aa);
                setListAdapter(aa);
        }
    }
    
    //item���대┃��� ��諛����� �대깽���⑤�留�   
    @Override
    protected void onListItemClick(ListView l, View v, int position, long id) {
        cPosition = position;
        play(PATH+list.get(position)); //sdcard/???.mp3
    }
    
    private void play(String songPath){
        try{
                mp.reset();
                mp.setDataSource(songPath);
                mp.prepare();
                mp.start();
                Toast.makeText(this,"PLAY : "+songPath,Toast.LENGTH_LONG).show();
                tv.setText("PLAY : "+songPath);
                
                mp.setOnCompletionListener(new OnCompletionListener() {
                                
                                @Override
                                public void onCompletion(MediaPlayer mp) {
                                        nextPlay();
                                }
                        }); //��끝����� ����諛����� �대깽��(�곗� �ъ���
        }catch(IOException ie){
                Toast.makeText(this,ie.toString(),Toast.LENGTH_LONG).show();
        }
    }
    
    private void nextPlay(){
        ++cPosition;
        if(cPosition < list.size()){ //�ㅼ� 怨≪� ���硫�
                Toast.makeText(this, "�ㅼ�怨��ъ�",Toast.LENGTH_SHORT).show();
                play(PATH+list.get(cPosition));
        }else{ //留��留�怨≪� ���硫�..
                //泥��怨≪�濡���� 媛��.
                cPosition=0;
                tv.setText("READY");
        }
    }
}

class Filter implements FilenameFilter{

        @Override
        public boolean accept(File dir, String filename) {              
                return filename.endsWith(".mp3");
        }
        
}