android 音乐播放工具类MediaPlayer
16lz
2021-12-18
上代码
public class Player implements OnBufferingUpdateListener, OnCompletionListener, OnPreparedListener { public MediaPlayer mediaPlayer; // 媒体播放器 private SeekBar seekBar; // 拖动条 private Timer mTimer = new Timer(); // 计时器 // 初始化播放器 public Player(SeekBar seekBar) { super(); this.seekBar = seekBar; try { mediaPlayer = new MediaPlayer(); mediaPlayer.setAudioStreamType(AudioManager.STREAM_MUSIC);// 设置媒体流类型 mediaPlayer.setOnBufferingUpdateListener(this); mediaPlayer.setOnPreparedListener(this); } catch (Exception e) { e.printStackTrace(); } // 每一秒触发一次 mTimer.schedule(timerTask, 0, 1000); } // 计时器 TimerTask timerTask = new TimerTask() { @Override public void run() { if (mediaPlayer == null) return; if (mediaPlayer.isPlaying() && seekBar.isPressed() == false) { handler.sendEmptyMessage(0); // 发送消息 } } }; Handler handler = new Handler() { public void handleMessage(android.os.Message msg) { int position = mediaPlayer.getCurrentPosition(); int duration = mediaPlayer.getDuration(); if (duration > 0) { // 计算进度(获取进度条最大刻度*当前音乐播放位置 / 当前音乐时长) long pos = seekBar.getMax() * position / duration; seekBar.setProgress((int) pos); } }; }; public void play() { mediaPlayer.start(); } /** * * @param url * url地址 */ public void playUrl(String url) { try { mediaPlayer.reset(); mediaPlayer.setDataSource(url); // 设置数据源 mediaPlayer.prepare(); // prepare自动播放 } catch (IllegalArgumentException e) { e.printStackTrace(); } catch (SecurityException e) { e.printStackTrace(); } catch (IllegalStateException e) { e.printStackTrace(); } catch (IOException e) { e.printStackTrace(); } } // 暂停 public void pause() { mediaPlayer.pause(); } // 停止 public void stop() { if (mediaPlayer != null) { mediaPlayer.stop(); mediaPlayer.release(); mediaPlayer = null; } } @Override public void onPrepared(MediaPlayer mp) { mp.start(); Log.e("mediaPlayer", "onPrepared"); } @Override public void onCompletion(MediaPlayer mp) { Log.e("mediaPlayer", "onCompletion"); } /** * 缓冲更新 */ @Override public void onBufferingUpdate(MediaPlayer mp, int percent) { seekBar.setSecondaryProgress(percent); int currentProgress = seekBar.getMax() * mediaPlayer.getCurrentPosition() / mediaPlayer.getDuration(); Log.e(currentProgress + "% play", percent + " buffer"); }}
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