Android 本地播放器
发布时间:2018-09-06
技术:Glide+pinyin4j+SwipeDelMenuLayout
概述
这是一款Android 端的本地音乐播放器,界面风格有模仿网易云音乐、bilibili、酷安、酷狗等。整体设计遵循了 Material Design 设计风格,界面美观,轻便实用,目前实现了基本的播放控制功能,还有主题切换, 可以扫描本地所有音乐文件并按歌单分类播放,目前已经上架到酷安应用市场。
详细
一、先看效果图
二、项目的播放流程简要介绍
1.首先我们需要一个常驻在后台的播放服务,在播放服务中绑定一个播放广播,我们在打开播放器的时候就启动这个播放服务。
public class MusicPlayerService extends Service { private static final String TAG = MusicPlayerService.class.getName(); public static final String PLAYER_MANAGER_ACTION = "com.lijunyan.blackmusic.service.MusicPlayerService.player.action"; private PlayerManagerReceiver mReceiver; public MusicPlayerService() { } @Override public IBinder onBind(Intent intent) { throw new UnsupportedOperationException("Not yet implemented"); } @Override public void onCreate() { super.onCreate(); Log.e(TAG, "onCreate: "); register(); } @Override public void onDestroy() { super.onDestroy(); Log.e(TAG, "onDestroy: "); unRegister(); } @Override public int onStartCommand(Intent intent, int flags, int startId) { Log.e(TAG, "onStartCommand: "); return super.onStartCommand(intent, flags, startId); } private void register() { mReceiver = new PlayerManagerReceiver(MusicPlayerService.this); IntentFilter intentFilter = new IntentFilter(); intentFilter.addAction(PLAYER_MANAGER_ACTION); registerReceiver(mReceiver, intentFilter); } private void unRegister() { if (mReceiver != null) { unregisterReceiver(mReceiver); } } }
2.播放服务中的广播可以接受各种音频控制操作,包括播放、暂停、切歌等。程序在响应用户的音频控制操作时向这个播放广播发送对应的播放、暂停、停止等指令。广播收到不同的指令做不同的功能实现。
public class PlayerManagerReceiver extends BroadcastReceiver { private static final String TAG = PlayerManagerReceiver.class.getName(); public static final String ACTION_UPDATE_UI_ADAPTER = "com.lijunyan.blackmusic.receiver.PlayerManagerReceiver:action_update_ui_adapter_broad_cast"; private MediaPlayer mediaPlayer; private DBManager dbManager; public static int status = Constant.STATUS_STOP; private int playMode; private int threadNumber; private Context context; public PlayerManagerReceiver() { } public PlayerManagerReceiver(Context context) { super(); this.context = context; dbManager = DBManager.getInstance(context); mediaPlayer = new MediaPlayer(); Log.d(TAG, "create"); initMediaPlayer(); } @Override public void onReceive(Context context, Intent intent) { int cmd = intent.getIntExtra(Constant.COMMAND,Constant.COMMAND_INIT); Log.d(TAG, "cmd = " + cmd); switch (cmd) { case Constant.COMMAND_INIT: Log.d(TAG, "COMMAND_INIT"); break; case Constant.COMMAND_PLAY: Log.d(TAG, "COMMAND_PLAY"); status = Constant.STATUS_PLAY; String musicPath = intent.getStringExtra(Constant.KEY_PATH); if (musicPath!=null) { playMusic(musicPath); }else { mediaPlayer.start(); } break; case Constant.COMMAND_PAUSE: mediaPlayer.pause(); status = Constant.STATUS_PAUSE; break; case Constant.COMMAND_STOP: NumberRandom(); status = Constant.STATUS_STOP; if(mediaPlayer!=null) { mediaPlayer.stop(); } initStopOperate(); break; case Constant.COMMAND_PROGRESS://拖动进度 int curProgress = intent.getIntExtra(Constant.KEY_CURRENT, 0); //异步的,可以设置完成监听来获取真正定位完成的时候 mediaPlayer.seekTo(curProgress); break; case Constant.COMMAND_RELEASE: NumberRandom(); status = Constant.STATUS_STOP; if(mediaPlayer!=null) { mediaPlayer.stop(); mediaPlayer.release(); } break; } UpdateUI(); } private void initStopOperate(){ MyMusicUtil.setShared(Constant.KEY_ID,dbManager.getFirstId(Constant.LIST_ALLMUSIC)); } private void playMusic(String musicPath) { NumberRandom(); if (mediaPlayer!=null) { mediaPlayer.release(); } mediaPlayer = new MediaPlayer(); mediaPlayer.setOnCompletionListener(new MediaPlayer.OnCompletionListener() { @Override public void onCompletion(MediaPlayer mp) { Log.d(TAG, "playMusic onCompletion: "); NumberRandom(); //切换线程 onComplete(); //调用音乐切换模块,进行相应操作 UpdateUI(); //更新界面 } }); try { File file = new File(musicPath); if(!file.exists()){ Toast.makeText(context,"歌曲文件不存在,请重新扫描",Toast.LENGTH_SHORT).show(); MyMusicUtil.playNextMusic(context); return; } mediaPlayer.setDataSource(musicPath); //设置MediaPlayer数据源 mediaPlayer.prepare(); mediaPlayer.start(); new UpdateUIThread(this, context, threadNumber).start(); } catch (Exception e) { e.printStackTrace(); } } //取一个(0,100)之间的不一样的随机数 private void NumberRandom() { int count; do { count =(int)(Math.random()*100); } while (count == threadNumber); threadNumber = count; } private void onComplete() { MyMusicUtil.playNextMusic(context); } private void UpdateUI() { Intent playBarintent = new Intent(PlayBarFragment.ACTION_UPDATE_UI_PlayBar); //接收广播为MusicUpdateMain playBarintent.putExtra(Constant.STATUS, status); context.sendBroadcast(playBarintent); Intent intent = new Intent(ACTION_UPDATE_UI_ADAPTER); //接收广播为所有歌曲列表的adapter context.sendBroadcast(intent); } private void initMediaPlayer() { NumberRandom(); // 改变线程号,使旧的播放线程停止 int musicId = MyMusicUtil.getIntShared(Constant.KEY_ID); int current = MyMusicUtil.getIntShared(Constant.KEY_CURRENT); Log.d(TAG, "initMediaPlayer musicId = " + musicId); // 如果是没取到当前正在播放的音乐ID,则从数据库中获取第一首音乐的播放信息初始化 if (musicId == -1) { return; } String path = dbManager.getMusicPath(musicId); if (path == null) { Log.e(TAG, "initMediaPlayer: path == null"); return; } if (current == 0) { status = Constant.STATUS_STOP; // 设置播放状态为停止 }else { status = Constant.STATUS_PAUSE; // 设置播放状态为暂停 } Log.d(TAG, "initMediaPlayer status = " + status); MyMusicUtil.setShared(Constant.KEY_ID,musicId); MyMusicUtil.setShared(Constant.KEY_PATH,path); UpdateUI(); } public MediaPlayer getMediaPlayer() { return mediaPlayer; } public int getThreadNumber() { return threadNumber; } }
3.项目在播放一个音频的同时维护了一个线程实时去通知界面刷新,该线程从MediaPlayer中获取当前的播放进度、总时间等信息发送给播放界面,播放界面拿到数据就可以刷新播放显示信息了。
public class UpdateUIThread extends Thread { private static final String TAG = UpdateUIThread.class.getName(); private int threadNumber; private Context context; private PlayerManagerReceiver playerManagerReceiver; private int duration; private int curPosition; public UpdateUIThread(PlayerManagerReceiver playerManagerReceiver, Context context, int threadNumber) { Log.i(TAG, "UpdateUIThread: " ); this.playerManagerReceiver = playerManagerReceiver; this.context = context; this.threadNumber = threadNumber; } @Override public void run() { try { while (playerManagerReceiver.getThreadNumber() == this.threadNumber) { if (playerManagerReceiver.status == Constant.STATUS_STOP) { Log.e(TAG, "run: Constant.STATUS_STOP"); break; } if (playerManagerReceiver.status == Constant.STATUS_PLAY || playerManagerReceiver.status == Constant.STATUS_PAUSE) { if (!playerManagerReceiver.getMediaPlayer().isPlaying()) { Log.i(TAG, "run: getMediaPlayer().isPlaying() = " + playerManagerReceiver.getMediaPlayer().isPlaying()); break; } duration = playerManagerReceiver.getMediaPlayer().getDuration(); curPosition = playerManagerReceiver.getMediaPlayer().getCurrentPosition(); Intent intent = new Intent(PlayBarFragment.ACTION_UPDATE_UI_PlayBar); intent.putExtra(Constant.STATUS, Constant.STATUS_RUN); intent.putExtra(Constant.KEY_DURATION, duration); intent.putExtra(Constant.KEY_CURRENT, curPosition); context.sendBroadcast(intent); } try { Thread.sleep(100); } catch (InterruptedException e) { e.printStackTrace(); } } }catch (Exception e){ e.printStackTrace(); } } }
三、项目文件结构
四、其他
如果对你有帮助的话,可以给我github个star,谢谢。
https://github.com/lijunyandev/MeetMusic