package com.terry;

 import java.io.File;

 import java.io.FileFilter;

 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.view.View.OnClickListener;

 import android.widget.ArrayAdapter;

 import android.widget.Button;

 import android.widget.ListView;

 import android.widget.Toast;

 public class myActivity2 extends ListActivity implements OnClickListener {

     Button play;

     Button pause;

     Button next;

     Button last;

     // ListView listViews;

     List<String> list;

     MediaPlayer mediaplayer;

     String PATH_ROOT = "/sdcard/";

     //当前项目名称

     String CURRENT_ITME = "";

     //当前位置

     int CURRENT_POSITON = 0;

     @Override

     protected void onCreate(Bundle savedInstanceState) {

         // TODO Auto-generated method stub

         super.onCreate(savedInstanceState);

         // Intent intent = new Intent();

         setContentView(R.layout.main2);

         initViews();

         initListViews();

         mediaplayer = new MediaPlayer();

     }

     private void initViews() {

         // TODO Auto-generated method stub

         play = (Button) findViewById(R.id.start2);

         pause = (Button) findViewById(R.id.pause2);

         next = (Button) findViewById(R.id.next2);

         last = (Button) findViewById(R.id.last2);

         play.setOnClickListener(this);

         pause.setOnClickListener(this);

         next.setOnClickListener(this);

         last.setOnClickListener(this);

     }

     private void initListViews() {

         // 初始化ListViews

         // listViews

         list = new ArrayList<String>();

         ArrayAdapter<String> musiclistadapter;

         File file = new File(PATH_ROOT);

         if (file != null) {

             if (file.isDirectory()) {

                 File[] listfiles = file.listFiles();

                 if (listfiles != null) {

                     for (int i = 0; i < listfiles.length; i++) {

                         String name = listfiles[i].getName();

                         if (name.endsWith(".mp3")) {

                             list.add(name);

                         }

                     }

                 }

             }

         }

         musiclistadapter = new ArrayAdapter<String>(this, R.layout.musicitme,

                 list);

         setListAdapter(musiclistadapter);

     }

     @Override

     public void onClick(View v) {

         switch (v.getId()) {

         case R.id.start2:

             // mediaplayer.p

             playMusic(PATH_ROOT + CURRENT_ITME);

             break;

         case R.id.pause2:

             if (mediaplayer.isPlaying()) {

                 mediaplayer.pause();

             } else {

                 Toast.makeText(this, "没有正在播放的音乐,我自动播放咯。。。。", 100).show();

                 playMusic(PATH_ROOT + CURRENT_ITME);

             }

             break;

         case R.id.next2:

             System.out.println("xiayishou....");

             CURRENT_POSITON += 1;

             CURRENT_ITME = list.get(CURRENT_POSITON);

             playMusic(PATH_ROOT + CURRENT_ITME);

             System.out.println("path:" + PATH_ROOT + CURRENT_ITME);

             Toast.makeText(this, "下一首音乐,path:" + PATH_ROOT + CURRENT_ITME, 100)

                     .show();

             break;

         case R.id.last2:

             System.out.println("shangyishou....");

             CURRENT_POSITON -= 1;

             CURRENT_ITME = list.get(CURRENT_POSITON);

             playMusic(PATH_ROOT + CURRENT_ITME);

             System.out.println("path:" + PATH_ROOT + CURRENT_ITME);

             Toast.makeText(this, "shang一首音乐,path:" + PATH_ROOT + CURRENT_ITME, 100)

                     .show();

             break;

         }

     }

     private void playMusic(String path) {

         mediaplayer.reset();

         try {

             mediaplayer.setDataSource(path);

             mediaplayer.prepare();

             mediaplayer.start();

             mediaplayer

                     .setOnCompletionListener(new myOnCompleteMusicListener());

         } catch (IllegalArgumentException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         } catch (SecurityException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         } catch (IllegalStateException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         } catch (IOException e) {

             // TODO Auto-generated catch block

             e.printStackTrace();

         }

     }

     public class myOnCompleteMusicListener implements OnCompletionListener {

         @Override

         public void onCompletion(MediaPlayer mp) {

             // TODO

             // playMusic(P);

         }

     }

     @Override

     protected void onListItemClick(ListView l, View v, int position, long id) {

         // TODO Auto-generated method stub

         super.onListItemClick(l, v, position, id);

         CURRENT_POSITON = position;

         CURRENT_ITME = list.get(position);//获取当前位置的String字符串，即文件名

         playMusic(PATH_ROOT + CURRENT_ITME);

         Toast.makeText(this, "PATH:" + PATH_ROOT + CURRENT_ITME, 100).show();

         System.out.println("path:" + PATH_ROOT + CURRENT_ITME);

     }

 }