音频播放

import audio from '@ohos.multimedia.media';

var audioplayer = audio.createAudioPlayer(); 

audioplayer.src = 'common/mydream.mp3';
audioplayer.on('play', (err, action) => {
  if (err) {
     console.log(`err returned in play() callback`);
     return;
  }
  console.log('start to play');
  audioplayer.pause();
};
audioplayer.play();

audioplayer.src = 'common/mydream.mp3';
audioplayer.on('pause', (err, action) => {
  if (err) {
     console.log(`err returned in pause() callback`);
     return;
  }
  console.log('playback pause');
};
audioplayer.pause();

audioplayer.src = 'common/mydream.mp3';
audioplayer.on('stop',(err, action) => {
  if (err) {
     console.log(`err returned in stop() callback`);
     return;
  }
  console.log('playback stop');
};
audioplayer.stop();

audioplayer.src = 'common/mydream.mp3';
audioplayer.on('timeupdate', (err, action) => {
  if (err) {
     console.log(`err returned in seek() callback`);
     return;
  }
  var newTime = audioplayer.currenTime;
  if(newTime = 30000) {
    console.info('Seek success, new time : ' + newTime);
  } else {
    console.info('Seek Failed');
  }
};
audioplayer.seek(30000);

audioplayer.src = 'common/mydream.mp3';
audioplayer.on('volumeChange', (err, action) => {
  if (err) {
     console.log(`err returned in setVolume() callback`);
     return;
  }
  console.log('playback volume change');
};
audioplayer.setVolume(30);

audioplay.release();