android 音乐播放器-------歌词同步 lrc

lrc格式：

[al:这首歌所在的唱片集]
[ar:歌词作者]
[by:本LRC文件的创建者]
[offset:+/- 以毫秒为单位整体时间戳调整，+增加，-减小]
[re:创建此LRC文件的播放器或编辑器]
[ti:歌词(歌曲)的标题]
[ve:程序的版本]

时间标记的格式为[mm:ss.xx]其中mm为分钟数，ss为秒数并且xx为百分之一秒

例子：

[ti:爱]

[ar:小虎队]

[al:华纳国语情浓13首]

[by:爱上你了音乐网]

百度百科关于lrc的解释：

http://baike.baidu.com/view/80650.htm

 

[ti:青花瓷]
[ar:周杰伦]
[al:我很忙]
[by:张琪]
[00:00.00]发送短信18到291199下载该歌曲到手机
[00:01.11]青花瓷
[03:36.49]
[00:21.39]素眉勾勒秋千话北风龙转丹　
[00:26.08]屏层鸟绘的牡丹一如你梳妆
[00:30.46]黯然腾香透过窗心事我了然　
[00:34.93]宣纸上皱边直尺各一半
[00:39.49]油色渲染侍女图因为被失藏　
[00:43.83]而你嫣然的一笑如含苞待放
[00:48.30]你的美一缕飘散　
[00:50.77]去到我去不了的地方
[02:23.97][00:55.77]
[03:01.92][02:25.63][00:56.90]天正在等烟雨　
[03:03.57][02:27.91][00:58.99]而我在等你　
[03:05.92][02:30.44][01:00.93]炊烟袅袅升起　
[03:07.76][02:32.25][01:03.49]隔江千万里
[03:10.36][02:34.85][01:05.84]在平地书刻你房间上的飘影　
[03:14.67][02:38.73][01:09.87]就当我为遇见你伏笔
[03:18.83][02:43.35][01:14.34]天正在等烟雨　
[03:21.20][02:45.60][01:16.68]而我在等你　
[03:23.71][02:48.01][01:18.99]月色被打捞起　
[03:25.74][02:50.10][01:21.18]掩盖了结局
[03:28.33][02:52.54][01:23.72]如传世的青花瓷在独自美丽　
[03:32.30][02:56.67][01:27.65]你眼的笑意
[01:50.25]色白花青的景已跃然于碗底　
[01:54.69]临摹宋体落款时却惦记着你
[01:59.22]你隐藏在药效里一千年的秘密　
[02:03.75]急溪里犹如羞花沾落地
[02:08.32]林外芭蕉　惹咒语　
[02:10.57]梦幻的铜绿
[02:12.84]而我路过那江南小镇的等你
[02:17.19]在泼墨山水画里　
[02:19.75]你从墨色深处被隐去

 

前面“[ ]”中的数字表示其后歌词的开始时间。例如，“[01:50.25]色白花青的景已跃然于碗底”表示在1分50.25秒时，歌词内容是“色白花青的景已跃然于碗底”。
    还有一种形式是“[03:01.92][02:25.63][00:56.90]天正在等烟雨”这种形式常用于赋格部分（俗称：歌曲的高潮部分），它表示在 03:01.92, 02:25.63, 00:56.90 时的歌词都是“天正在等烟雨”。

 

代码实现，歌词类

package com.android.music;import java.io.BufferedInputStream;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.InputStream;import java.io.InputStreamReader;import java.util.Collections;import java.util.Comparator;import java.util.Vector;import android.util.Log;public class LRCUtils {private static final String TAG = "LRCUtils";MediaPlayActivity mediaPlay;private static Vector<timelrc> lrclist;private boolean IsLyricExist = false;private int lastLine = 0;public LRCUtils(MediaPlayActivity mediaPlayActivity) {mediaPlay = mediaPlayActivity;}public void RefreshLRC(int current){if (IsLyricExist){for(int i = 0; i < lrclist.size(); i++) { if(current < lrclist.get(i).getTimePoint()) if(i == 0 || current >= lrclist.get(i-1).getTimePoint()) { Log.d(TAG,"string = "+lrclist.get(i-1).getLrcString()); mediaPlay.setLRCText(lrclist.get(i-1).getLrcString(),lastLine!=(i-1)); lastLine = i-1;// playlrcText.setText(lrclist.get(i-1).getLrcString()); } }}}public void ReadLRC(File f){try{if (!f.exists()){Log.d(TAG,"not exit the lrc file");IsLyricExist = false;//strLRC = main.getResources().getString(R.string.lrcservice_no_lyric_found);}else{lrclist = new Vector<timelrc>();IsLyricExist = true;InputStream is = new BufferedInputStream(new FileInputStream(f));BufferedReader br = new BufferedReader(new InputStreamReader(is, GetCharset(f)));String strTemp = "";while ((strTemp = br.readLine()) != null){//Log.d(TAG,"strTemp = "+strTemp);strTemp = AnalyzeLRC(strTemp); // ���з��� LRC}br.close();is.close();Collections.sort(lrclist, new Sort());for(int i=0;i<lrclist.size();i++){Log.d(TAG,"time = "+lrclist.get(i).getTimePoint()+" string = "+lrclist.get(i).getLrcString());}}}catch (Exception e){e.printStackTrace();}}private String AnalyzeLRC(String LRCText){try{int pos1 = LRCText.indexOf("["); // ��һ����ǿ�ʼ��int pos2 = LRCText.indexOf("]"); // ��һ����ǽ����// ������ǰ���Ƿ���ȷ����һλӦΪ��ǿ�ͷ��[����if (pos1 == 0 && pos2 != -1){// ��ȷLong time[] = new Long[GetPossiblyTagCount(LRCText)];time[0] = TimeToLong(LRCText.substring(pos1 + 1, pos2)); // ��¼��һ�ε�ʱ��if (time[0] == -1) // ����ȷ��ʱ��return ""; // LRCTextString strLineRemaining = LRCText;int i = 1;while (pos1 == 0 && pos2 != -1){strLineRemaining = strLineRemaining.substring(pos2 + 1); // ʣ�µ�����pos1 = strLineRemaining.indexOf("[");pos2 = strLineRemaining.indexOf("]");if (pos2 != -1){time[i] = TimeToLong(strLineRemaining.substring(pos1 + 1, pos2));if (time[i] == -1) // ����ȷ��ʱ��return ""; // LRCTexti++;}}timelrc tl = new timelrc();for (int j = 0; j < time.length; j++){if (time[j] != null){//Log.d(TAG,"time["+j+"] = "+time[j].intValue()+" strLineRemaining = "+strLineRemaining);tl.setTimePoint(time[j].intValue());tl.setLrcString(strLineRemaining);lrclist.add(tl);tl = new timelrc();//map.put(time[j], strLineRemaining);//lstTimeStamp.add(time[j]);}}return strLineRemaining;}elsereturn "";}catch (Exception e){return "";}} private int GetPossiblyTagCount(String Line){String strCount1[] = Line.split("//[");String strCount2[] = Line.split("//]");if (strCount1.length == 0 && strCount2.length == 0)return 1;else if (strCount1.length > strCount2.length)return strCount1.length;elsereturn strCount2.length;} public long TimeToLong(String Time){try{String[] s1 = Time.split(":");int min = Integer.parseInt(s1[0]);String[] s2 = s1[1].split("//.");int sec = Integer.parseInt(s2[0]);int mill = 0;if (s2.length > 1)mill = Integer.parseInt(s2[1]);return min * 60 * 1000 + sec * 1000 + mill * 10;}catch (Exception e){return -1;}}public String GetCharset(File file){String charset = "GBK";byte[] first3Bytes = new byte[3];try{boolean checked = false;BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));bis.mark(0);int read = bis.read(first3Bytes, 0, 3);if (read == -1)return charset;if (first3Bytes[0] == (byte) 0xFF && first3Bytes[1] == (byte) 0xFE){charset = "UTF-16LE";checked = true;}else if (first3Bytes[0] == (byte) 0xFE && first3Bytes[1] == (byte) 0xFF){charset = "UTF-16BE";checked = true;}else if (first3Bytes[0] == (byte) 0xEF && first3Bytes[1] == (byte) 0xBB && first3Bytes[2] == (byte) 0xBF){charset = "UTF-8";checked = true;}bis.reset();if (!checked){int loc = 0;while ((read = bis.read()) != -1){loc++;if (read >= 0xF0)break;if (0x80 <= read && read <= 0xBF) // ��������BF���µģ�Ҳ����GBKbreak;if (0xC0 <= read && read <= 0xDF){read = bis.read();if (0x80 <= read && read <= 0xBF) // ˫�ֽ�(0xC0-0xDF),(0x80-xBF)Ҳ������GB������continue;elsebreak;}else if (0xE0 <= read && read <= 0xEF){// Ҳ�п��ܳ��?���Ǽ��ʽ�Сread = bis.read();if (0x80 <= read && read <= 0xBF){read = bis.read();if (0x80 <= read && read <= 0xBF){charset = "UTF-8";break;}elsebreak;}elsebreak;}}}bis.close();}catch (Exception e){e.printStackTrace();}return charset;}private class Sort implements Comparator<timelrc> {public Sort() {}public int compare(timelrc tl1, timelrc tl2) {return sortUp(tl1, tl2);}private int sortUp(timelrc tl1, timelrc tl2) {if (tl1.getTimePoint() < tl2.getTimePoint())return -1;else if (tl1.getTimePoint() > tl2.getTimePoint())return 1;elsereturn 0;}}public static class timelrc {private String lrcString;private int sleepTime;private int timePoint;timelrc() {lrcString = null;sleepTime = 0;timePoint = 0;}public void setLrcString(String lrc) {lrcString = lrc;}public void setSleepTime(int time) {sleepTime = time;}public void setTimePoint(int tPoint) {timePoint = tPoint;}public String getLrcString() {return lrcString;}public int getSleepTime() {return sleepTime;}public int getTimePoint() {return timePoint;}};}

 

实现思路：

定义一个类，timelrc，用来存放每一句歌词的内容和时间，每当播放的歌曲的时间改变时，即显示播放的seekbar改变时，刷新歌词RefreshLRC(int)，并将取得的歌词的getLrcString()显示到应用程序中。

 

使用方法：

在音乐播放的activity界面，获取当前播放歌曲的path，歌词路径。

private void getLrcPath(String path) {Log.d(TAG,"path = "+path); if (path != null) {path = path.substring(0, path.lastIndexOf(".")).concat(".lrc");File file = new File(path);lrcService.ReadLRC(file);}}

通过该函数的调用，如上类会将歌词存储起来。

当播放时间改变时，调用lrcService.RefreshLRC(current);  刷新

在播放界面显示正在播放的歌词内容

public void setLRCText(String lrcString,boolean changeLine) {
        if(changeLine){
            flipperLrc.showNext();
        }
        playlrcText.setText(lrcString);
       
    }

 

 

（未完待续。。。）