Android音乐播放器Vln的博客-播放器

具体功能实现：
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操作及注意事项：
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登陆成功后可进行常规点击播放音乐与其他操作
主要类：

音乐播放服务类

/**  * 类说明：音乐播放服务类  * @author wangzhihao  * @version   */ public class ControlPlay extends Service { //声明一个音频播放器 public static MediaPlayer myMediaPlayer; public static MainActivity c_ma; public static int playing_id = 0; public static Music_infoAdapter m_in; //创建线程 public Thread thread;  Handler handler = new Handler(); public boolean playFlag = true; public int vTemp = 0; @Override public IBinder onBind(Intent intent) { return null; } @Override public void onCreate() { super.onCreate(); initMediaSource(initMusicUri(0)); } @Override public void onDestroy() { super.onDestroy(); if (myMediaPlayer != null) {    myMediaPlayer.stop();    myMediaPlayer.release();    myMediaPlayer = null; } } @Override public void onStart(Intent intent, int startId) {   String playFlag = intent.getExtras().getString("control"); if ("play".equals(playFlag)) { playMusic(); } else if ("next".equals(playFlag)) { playNext(); } else if ("front".equals(playFlag)) { playFront(); } else if ("listClick".equals(playFlag)) {    playing_id = intent.getExtras().getInt("musicId_1"); initMediaSource(initMusicUri(playing_id)); playMusic(); } else if ("gridClick".equals(playFlag)) {    playing_id = intent.getExtras().getInt("musicId_2"); initMediaSource(initMusicUri(playing_id)); playMusic(); } } /**   * 初始化媒体对象   *    * @param mp3Path   *            mp3路径   */ public void initMediaSource(String mp3Path) {   Uri mp3Uri = Uri.parse(mp3Path); if (myMediaPlayer != null) {    myMediaPlayer.stop();    myMediaPlayer.reset();    myMediaPlayer = null; } // 为myMediaPlayer创建对象   myMediaPlayer = MediaPlayer.create(this, mp3Uri); //myMediaPlayer = MediaPlayer.create(this, R.raw.aaaa); // c_ma.startRhythm(myMediaPlayer); } /**   * 返回列表第几行的歌曲路径   *    * @param _id   *            表示歌曲序号，从0开始   */ public String initMusicUri(int _id) {   playing_id = _id;   String s; // 判断列表和列表长度不为空时才获取 if (Music_infoAdapter.musicList != null&& Music_infoAdapter.musicList.size() != 0) {    s = Music_infoAdapter.musicList.get(_id).getMusicPath(); return s; } else { // 否则返回空字符串 return ""; } } /**   * 音乐播放方法，并且带有暂停方法   */ public void playMusic() { // 判断歌曲不能为空 System.out.println("sfajfdsa"); if (myMediaPlayer != null && Music_infoAdapter.musicList.size() != 0) { if (myMediaPlayer.isPlaying()) { // 歌曲暂停     myMediaPlayer.stop(); // 更换播放按钮背景     MainActivity.play_ImageButton.setBackgroundResource(R.drawable.play_button); } else {     System.out.println("sfajfdsa2"); //  myMediaPlayer.start(); try { if(myMediaPlayer != null) {             myMediaPlayer.stop(); }                myMediaPlayer.prepare();            myMediaPlayer.start(); } catch (Exception e) {                    e.printStackTrace(); } // /////////////////////// 初始化歌词配置 /////////////////////// // // 更换背景-     MainActivity.play_ImageButton.setBackgroundResource(R.drawable.pause_button); // 启动线程更新SeekBar startSeekBarUpdate(); // 截取.mp3字符串     String a = Music_infoAdapter.musicList.get(playing_id).getMusicName(); // 切换带动画更新歌曲名     MainActivity.music_Name.setText(a);     MainActivity.music_Name.setAnimation(AnimationUtils.loadAnimation(ControlPlay.this, R.anim.translate_z)); // 带动画更新专辑名     MainActivity.music_Album.setText(Music_infoAdapter.musicList.get(playing_id).getMusicAlbum());     MainActivity.music_Album.setAnimation(AnimationUtils.loadAnimation(ControlPlay.this, R.anim.alpha_y)); // 更新歌曲时间     MainActivity.time_right.setText(Music_infoAdapter.toTime(Music_infoAdapter.musicList.get(playing_id).getMusicTime())); } /**     * 监听播放是否完成     */    myMediaPlayer.setOnCompletionListener(new OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { // TODO Auto-generated method stub // 播放完当前歌曲，自动播放下一首 playNext(); } }); } else {    Toast.makeText(ControlPlay.this, "木有在手机里找到歌曲啊...",      Toast.LENGTH_SHORT).show(); } } /**   * 播放下一首   */ public void playNext() { // 判断歌曲不能为空 if (Music_infoAdapter.musicList.size() != 0) { // 如果到了最后一首则一直播放最后一首 if (playing_id == Music_infoAdapter.musicList.size() - 1) {     playing_id = Music_infoAdapter.musicList.size() - 1;     Toast.makeText(ControlPlay.this, "已经是最后一首啦！",       Toast.LENGTH_SHORT).show();      MainActivity.play_ImageButton       .setBackgroundResource(R.drawable.play_button);     MainActivity.mNotificationManager.cancel(1); } else { initMediaSource(initMusicUri(++playing_id)); playMusic(); } } else {    Toast.makeText(ControlPlay.this, "木有找到歌曲啊！", Toast.LENGTH_SHORT) .show(); } } /**   * 播放上一首   */ public void playFront() { // 判断歌曲不能为空 if (Music_infoAdapter.musicList.size() != 0) { // 如果到了第一首则一直播放第一首 if (playing_id == 0) {     playing_id = 0;     Toast.makeText(ControlPlay.this, "现在就是第一首哦！",       Toast.LENGTH_SHORT).show(); } else { initMediaSource(initMusicUri(--playing_id)); playMusic(); } } else {    Toast.makeText(ControlPlay.this, "木有找到歌曲啊！", Toast.LENGTH_SHORT) .show(); } } public void startSeekBarUpdate() {   handler.post(start); }   Runnable start = new Runnable() { @Override public void run() { // TODO Auto-generated method stub     handler.post(updatesb); } };   Runnable updatesb = new Runnable() { @Override public void run() { // 获取SeekBar走动到那的时间    MainActivity.play_time = myMediaPlayer.getCurrentPosition(); // 设置填充当前获取的进度    MainActivity.seekbar.setProgress(MainActivity.play_time); // SeekBar的最大值填充歌曲时间    MainActivity.seekbar.setMax(Music_infoAdapter.musicList.get(playing_id).getMusicTime()); // 线程延迟1000毫秒启动    handler.postDelayed(updatesb, 1000); } }; } 

MainActivity类

public class MainActivity extends Activity { private ImageButton left_ImageButton;// 上一曲 public static ImageButton play_ImageButton;// 播放 private ImageButton right_ImageButton;// 下一曲 public static Context mContext; private ListView musicListView;// 歌曲列表 // 绑定SeekBar和各种属性TextView public static SeekBar seekbar; public static TextView time_left; public static TextView time_right; public static TextView music_Name; public static TextView music_Album; public static ImageView music_AlbumArt; // 为歌曲时间和播放时间定义静态变量 public static int song_time = 0; public static int play_time = 0; public static Music_infoAdapter music_info; public static NotificationManager mNotificationManager; @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main);   mContext = MainActivity.this;   musicListView = (ListView) findViewById(R.id.listView1);    time_left = (TextView) findViewById(R.id.time_tv1);   time_right = (TextView) findViewById(R.id.time_tv2);   music_Name = (TextView) findViewById(R.id.music_name);   music_Album = (TextView) findViewById(R.id.music_album);   seekbar = (SeekBar) findViewById(R.id.player_seekbar); // 创建对象获得系统服务   mNotificationManager = (NotificationManager) getSystemService(Context.NOTIFICATION_SERVICE); ShowMp3List(); // 监听播放列表点击事件   musicListView.setOnItemClickListener(new OnItemClickListener() { @Override public void onItemClick(AdapterView<?> arg0, View arg1, int arg2,long arg3) {     Intent play_1 = new Intent(mContext, ControlPlay.class);     play_1.putExtra("control", "listClick");     play_1.putExtra("musicId_1", arg2); startService(play_1); } }); /**    * 监听“上一首”并实现功能    */   left_ImageButton = (ImageButton) findViewById(R.id.ib1);   left_ImageButton.setOnClickListener(new ImageButton.OnClickListener() { @Override public void onClick(View v) {     Intent play_left = new Intent(mContext, ControlPlay.class);     play_left.putExtra("control", "front"); startService(play_left); } }); /**    * 监听“下一首”并实现功能    */   right_ImageButton = (ImageButton) findViewById(R.id.ib3);   right_ImageButton.setOnClickListener(new ImageButton.OnClickListener() { @Override public void onClick(View v) {     Intent play_right = new Intent(mContext, ControlPlay.class);     play_right.putExtra("control", "next"); startService(play_right); } }); /**    * 播放按钮，实现方法    * */   play_ImageButton = (ImageButton) findViewById(R.id.ib2);   play_ImageButton.setOnClickListener(new ImageButton.OnClickListener() { @Override public void onClick(View v) {     Intent play_center = new Intent(mContext, ControlPlay.class);     play_center.putExtra("control", "play"); startService(play_center); } }); // 判断歌曲不能为空并且后缀为.mp3 if (music_info.getCount() > 0&& Music_infoAdapter.musicList.get(ControlPlay.playing_id).getMusicName().endsWith(".mp3")) { // 显示获取的歌曲时间    time_right.setText(Music_infoAdapter.toTime(Music_infoAdapter.musicList.get(ControlPlay.playing_id).getMusicTime())); // 截取.mp3字符串    String a = Music_infoAdapter.musicList.get(ControlPlay.playing_id).getMusicName(); int b = a.indexOf(".mp3");    String c = a.substring(0, b); // 显示获取的歌曲名    music_Name.setText(c);    music_Name.setAnimation(AnimationUtils.loadAnimation(mContext,R.anim.translate_z)); } else {    System.out.println("请点击列表播放歌曲！"); } /**    * 监听拖动SeekBar事件    */   seekbar.setOnSeekBarChangeListener(new OnSeekBarChangeListener() { @Override public void onStopTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } @Override public void onStartTrackingTouch(SeekBar seekBar) { // TODO Auto-generated method stub } @Override public void onProgressChanged(SeekBar seekBar, int progress, boolean fromUser) { // 判断用户是否触拖SeekBar并且不为空才执行 if (fromUser && ControlPlay.myMediaPlayer != null) {      ControlPlay.myMediaPlayer.seekTo(progress); }     time_left.setText(Music_infoAdapter.toTime(progress)); } }); } private void ShowMp3List() { // 用游标查找媒体详细信息   Cursor cursor = this.getContentResolver().query(     MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, new String[] { MediaStore.Audio.Media.TITLE,// 标题，游标从0读取       MediaStore.Audio.Media.DURATION,// 持续时间,1       MediaStore.Audio.Media.ARTIST,// 艺术家,2       MediaStore.Audio.Media._ID,// id,3       MediaStore.Audio.Media.DISPLAY_NAME,// 显示名称,4       MediaStore.Audio.Media.DATA,// 数据，5       MediaStore.Audio.Media.ALBUM_ID,// 专辑名称ID,6       MediaStore.Audio.Media.ALBUM,// 专辑,7       MediaStore.Audio.Media.SIZE }, null, null,     MediaStore.Audio.Media.ARTIST);// 大小,8 /**    * 判断游标是否为空，有些地方即使没有音乐也会报异常。而且游标不稳定。稍有不慎就出错了,其次，如果用户没有音乐的话，    * 不妨可以告知用户没有音乐让用户添加进去    */ if (cursor != null && cursor.getCount() == 0) {    Toast.makeText(mContext, "你的手机未找到音乐,请添加音乐", Toast.LENGTH_LONG).show(); return; }   System.out.println(" cursor size " + cursor.getCount());   music_info = new Music_infoAdapter(this, cursor); new MusicListView().disPlayList(musicListView, this, cursor); } } 

歌曲适配类

/**  * 类说明：歌曲列表适配类  * @author wangzhihao  * @version   */ public class Music_infoAdapter extends BaseAdapter { // 用来装查询到得音乐文件数据 //游标 public Cursor mCursor; // 歌曲列表信息 public static List<MusicInfomation> musicList; public MusicInfomation mi; public Context mContext; // 音乐信息：1、歌曲名，2、歌手，3、歌曲时间，4、专辑，5、歌曲大小 public Music_infoAdapter(Context context,Cursor cursor) {  System.out.println("Music_infoAdapter"); this.mContext = context; this.mCursor = cursor;   musicList = new ArrayList<MusicInfomation>(); /** 将游标移到第一位 **/   mCursor.moveToFirst(); if (mCursor != null) { // 移动到第一个    mCursor.moveToFirst(); // 获得歌曲的各种属性 for (int i = 0; i < mCursor.getCount(); i++) { // 过滤mp3文件 if (mCursor.getString(5).endsWith(".mp3")) {      mi = new MusicInfomation();      mi.setMusicName(mCursor.getString(0));//歌曲名称      mi.setMusicTime(mCursor.getInt(1));//歌曲时间长度      mi.setMusicAlbum(mCursor.getString(2));//专辑      mi.setMusicSinger(mCursor.getString(3));//歌手      mi.setMusicSize(mCursor.getInt(4));//大小      mi.setMusicPath(mCursor.getString(5));//路径      mi.set_id(mCursor.getInt(6));//歌曲id      musicList.add(mi); } // 移动到下一个     mCursor.moveToNext(); }    System.out.println("musicList size "+ musicList.size()); } } @Override public int getCount() { return musicList.size(); } @Override public Object getItem(int arg0) { return musicList.get(arg0); } @Override public long getItemId(int arg0) { return 0; } @Override public View getView(int arg0, View arg1, ViewGroup arg2) {   LayoutInflater li = LayoutInflater.from(mContext);   View v = li.inflate(R.layout.musiclist_item, null);    TextView tv1;   TextView tv2;   TextView tv3;   TextView tv4; // ImageView iv1;    tv1 = (TextView) v.findViewById(R.id.tv1);   tv2 = (TextView) v.findViewById(R.id.tv2);   tv3 = (TextView) v.findViewById(R.id.tv3);   tv4 = (TextView) v.findViewById(R.id.tv4);    tv1.setText(musicList.get(arg0).getMusicName());   tv2.setText(toTime(musicList.get(arg0).getMusicTime())); //tv3.setText(musicList.get(arg0).getMusicPath());   tv3.setText(musicList.get(arg0).getMusicAlbum());   tv4.setText(toMB(musicList.get(arg0).getMusicSize()) + "MB"); return v; } /**   * 时间转化处理   */ public static String toTime(int time) {   time /= 1000; int minute = time / 60; int second = time % 60;   minute %= 60; return String.format(" %02d:%02d ", minute, second); } /**   * 文件大小转换，将B转换为MB   */ public String toMB(int size) { float a = (float) size / (float) (1024 * 1024);   String b = Float.toString(a); int c = b.indexOf(".");   String fileSize = "";   fileSize += b.substring(0, c + 2); return fileSize; } /**   * 歌曲专辑图片显示,如果有歌曲图片，才会返回，否则为null，要注意判断   *    * @param trackId是音乐的id   * @return 返回类型是String 类型的图片地址，也就是uri   */ public String getAlbumArt(int trackId) { return ""; } /**   * 1、歌曲名 2、歌手 3、歌曲时间 4、专辑(专辑图片，专辑名称，专辑ID[用来获取图片]) 5、歌曲大小   */ public class MusicInfomation { private int _id; private String musicName; private String musicSinger; private int musicTime; private String musicAlbum; private int musicSize; private String musicPath; public int get_id() { return _id; } public void set_id(int _id) { this._id = _id; } public String getMusicName() { return musicName; } public void setMusicName(String musicName) { this.musicName = musicName; } public String getMusicSinger() { return musicSinger; } public void setMusicSinger(String musicSinger) { this.musicSinger = musicSinger; } public int getMusicTime() { return musicTime; } public void setMusicTime(int musicTime) { this.musicTime = musicTime; } public String getMusicAlbum() { return musicAlbum; } public void setMusicAlbum(String musicAlbum) { this.musicAlbum = musicAlbum; } public int getMusicSize() { return musicSize; } public void setMusicSize(int musicSize) { this.musicSize = musicSize; } public String getMusicPath() { return musicPath; } public void setMusicPath(String musicPath) { this.musicPath = musicPath; } } } 

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