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) {// ��ȷ Long time[] = new Long[GetPossiblyTagCount(LRCText)]; time[0] = TimeToLong(LRCText.substring(pos1 + 1, pos2)); // ��¼��һ�ε�ʱ�� if (time[0] == -1) // ����ȷ��ʱ�� return ""; // LRCText String 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 ""; // LRCText i++; } } 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; } else return ""; } 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; else return 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����GBK break; if (0xC0 <= read && read <= 0xDF) { read = bis.read(); if (0x80 <= read && read <= 0xBF) // ˫�ֽ�(0xC0-0xDF),(0x80-xBF)Ҳ������GB������ continue; else break; } else if (0xE0 <= read && read <= 0xEF) {// Ҳ�п��ܳ��?���Ǽ��ʽ�С read = bis.read(); if (0x80 <= read && read <= 0xBF) { read = bis.read(); if (0x80 <= read && read <= 0xBF) { charset = "UTF-8"; break; } else break; } else break; } } } 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; else return 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。。。）