ex_musicPlayer

<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"    android:id="@+id/AbsoluteLayout01"    android:layout_width="fill_parent"    android:layout_height="fill_parent"    android:orientation="vertical" >    <ListView        android:id="@id/android:list"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:drawSelectorOnTop="false" />    <AbsoluteLayout        android:id="@+id/AbsoluteLayout02"        android:layout_width="fill_parent"        android:layout_height="wrap_content"        android:orientation="horizontal" >        <Button            android:id="@+id/last"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_x="10px"            android:background="@drawable/last"            android:text="" >        </Button>        <Button            android:id="@+id/stop"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_x="70px"            android:background="@drawable/stop"            android:text="" >        </Button>        <Button            android:id="@+id/start"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_x="130px"            android:background="@drawable/start"            android:text="" >        </Button>        <Button            android:id="@+id/pause"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_x="190px"            android:background="@drawable/pause"            android:text="" >        </Button>        <Button            android:id="@+id/next"            android:layout_width="wrap_content"            android:layout_height="wrap_content"            android:layout_x="250px"            android:background="@drawable/next"            android:text="" >        </Button>    </AbsoluteLayout></LinearLayout>

<?xml version="1.0" encoding="utf-8"?><LinearLayout android:id="@+id/LinearLayout01" android:layout_width="fill_parent" android:layout_height="fill_parent" xmlns:android="http://schemas.android.com/apk/res/android"><ImageView android:id="@+id/img" android:layout_width="wrap_content" android:layout_height="wrap_content"android:layout_margin="5px"></ImageView><LinearLayout android:id="@+id/LinearLayout02" android:layout_width="wrap_content" android:layout_height="wrap_content"android:orientation="vertical"><TextView android:text="@+id/TextView01" android:id="@+id/song_name" android:layout_width="wrap_content" android:layout_height="wrap_content"android:textSize ="15px"></TextView><TextView android:text="@+id/info" android:id="@+id/info" android:layout_width="wrap_content" android:layout_height="wrap_content" android:textSize="10px"></TextView></LinearLayout></LinearLayout>

package com.ouling.ex_musicPlayer;import java.io.File;import java.util.ArrayList;import java.util.HashMap;import java.util.List;import java.util.Map;//import android.app.Activity;import android.app.ListActivity;import android.media.MediaPlayer;import android.media.MediaPlayer.OnCompletionListener;import android.os.Bundle;import android.view.*;import android.view.View.OnClickListener;import android.widget.*;public class ex_musicPlayer extends ListActivity {// 播放对象private MediaPlayer m_musicplayer;// 播放列表private List<String> m_playlist = new ArrayList<String>();// 当前播放索引位置private int m_list_item = 0;// 音乐路径private static String m_musicpath = new String("/sdcard/");public Button last;public Button stop;public Button start;public Button pause;public Button next;/** Called when the activity is first created. */@Overridepublic void onCreate(Bundle savedInstanceState) {super.onCreate(savedInstanceState);setContentView(R.layout.main);m_musicplayer = new MediaPlayer();findView();// 获取按钮musicList();// 获取播放列表listener();// 监听}private void listener() {// TODO Auto-generated method stub// 停止this.stop.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {if (m_musicplayer!=null) {m_musicplayer.stop();}}});// 开始start.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubplayMusic(m_playlist.get(m_list_item));}});// 下一首next.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubnextMusic();}});// 暂停pause.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stubif (m_musicplayer.isPlaying()) {m_musicplayer.pause();} else {m_musicplayer.start();}}});// 上一首last.setOnClickListener(new OnClickListener() {@Overridepublic void onClick(View v) {// TODO Auto-generated method stublastMusic();}});}// 获取SD音乐private void musicList() {// TODO Auto-generated method stubm_playlist.clear();search(m_musicpath, "mp3", m_playlist);SimpleAdapter adapter = new SimpleAdapter(this, this.getData(),R.layout.m_musicitem,new String[] { "song_name", "info", "img" }, new int[] {R.id.song_name, R.id.info, R.id.img });setListAdapter(adapter);}// 遍历路径下指定后缀名private void search(String dir, final String suffix, List<String> list) {File file = new File(dir);// 遍历该目录中所有文件File[] files = file.listFiles();if ((files != null) && (files.length > 0)) {for (File tmpfile : files) {// 如果是文件夹，继续遍历该目录if (tmpfile.isDirectory()) {search(tmpfile.getPath(), suffix, list);} else {//判断文件后缀名if (tmpfile.getPath().endsWith(suffix)) {list.add(tmpfile.getPath());}}}}}private List<Map<String, Object>> getData() {List<Map<String, Object>> m_list = new ArrayList<Map<String, Object>>();Map<String, Object> map;for (int i = 0; i < m_playlist.size(); i++) {map = new HashMap<String, Object>();//获取MP3中的歌曲信息File file = new File(m_playlist.get(i)); map.put("song_name", file.getName());map.put("info", "test");map.put("img", R.drawable.panda);m_list.add(map);}return m_list;}  // 获取按钮private void findView() {// TODO Auto-generated method stubstart = (Button) findViewById(R.id.start);stop = (Button) findViewById(R.id.stop);last = (Button) findViewById(R.id.last);next = (Button) findViewById(R.id.next);pause = (Button) findViewById(R.id.pause);}// 播放音乐void playMusic(String path) {try {m_musicplayer.reset();m_musicplayer.setDataSource(path);m_musicplayer.prepare();// 准备同步m_musicplayer.start();if (m_playlist.isEmpty() == true) {Toast.makeText(this, "播放列表为空", 1000).show();return;}m_musicplayer.setOnCompletionListener(new OnCompletionListener() {@Overridepublic void onCompletion(MediaPlayer arg0) {// TODO Auto-generated method stubnextMusic();}});} catch (Exception e) {e.printStackTrace();}}// 上一首void lastMusic() {if (m_list_item == 0) {m_list_item = m_playlist.size() - 1;} else {m_list_item--;}String path = m_playlist.get(m_list_item);playMusic(path);}// 下一首void nextMusic() {if (m_list_item == (m_playlist.size() - 1)) {m_list_item = 0;} else {m_list_item++;}String path = m_playlist.get(m_list_item);playMusic(path);}// 选择列表项时，播放音乐@Overrideprotected void onListItemClick(ListView l, View v, int position, long id) {// TODO Auto-generated method stubm_list_item = position;String path = m_playlist.get(m_list_item);playMusic(path);}// 当用户返回时结束音乐并释放音乐对象@Overridepublic boolean onKeyDown(int keyCode, KeyEvent event) {// TODO Auto-generated method stubif (keyCode == KeyEvent.KEYCODE_BACK) {m_musicplayer.stop();m_musicplayer.release();this.finish();return true;}return super.onKeyDown(keyCode, event);}}