Android音の長さを取得

コード#コード#

MediaMetadataRetriever metaRetriever = new MediaMetadataRetriever();

   metaRetriever.setDataSource(filePath);



String out = "";

   // get mp3 info



  // convert duration to minute:seconds

String duration =  

 metaRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_DURATION);

Log.v("time", duration);

long dur = Long.parseLong(duration);

String seconds = String.valueOf((dur % 60000) / 1000);



Log.v("seconds", seconds);

String minutes = String.valueOf(dur / 60000);

out = minutes + ":" + seconds;

if (seconds.length() == 1) {

    txtTime.setText("0" + minutes + ":0" + seconds);

}else {

    txtTime.setText("0" + minutes + ":" + seconds);

}

Log.v("minutes", minutes);

  // close object

   metaRetriever.release();

リファレンスアドレス
http://stackoverflow.com/questions/9834697/how-to-get-the-duration-of-an-mp3-file-in-android?rq=1