android 音乐播放器----歌词在线下载

本文来自CSDN丹丹博客，转载请必须注明出处：

http://blog.csdn.net/dany1202/archive/2011/06/09/6533513.aspx

使用百度的歌词API，如：

http://box.zhangmen.baidu.com/x?op=12&count=1&title=%E6%97%8B%E6%9C%A8 $$%E7%8E%8B%E8%8F%B2 $$$$

黄色部分为歌曲名和歌手名，输入如上网址，会得到一个对应的xml文件

其中的count值为1是说返回的是一个

<lrcid>43150</lrcid>这个值是我们想要的。

http://box.zhangmen.baidu.com/bdlrc/ 这个是百度lrc歌词存放地址

对应歌词地址：http://box.zhangmen.baidu.com/bdlrc/431/43150.lrc

对应类：

package com.android.music.play;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.io.UnsupportedEncodingException;
import java.net.HttpURLConnection;
import java.net.MalformedURLException;
import java.net.URL;
import java.net.URLEncoder;
import java.util.ArrayList;
import android.util.Log;
public class SearchLRC {
	private URL url;
	public static final String DEFAULT_LOCAL = "GB2312";
	StringBuffer sb = new StringBuffer();
	
	private boolean findNumber = false;
	/*
	 * 初期化，根据参数取得lrc的地址
	 */
	public SearchLRC(String musicName, String singerName) {
		// 将空格替换成+号
		//musicName = musicName.replace(' ', '+');
		//singerName = singerName.replace(' ', '+');
		
		//传进来的如果是汉字，那么就要进行编码转化
		try {
			musicName = URLEncoder.encode(musicName, "utf-8");
			singerName = URLEncoder.encode(singerName, "utf-8");
		} catch (UnsupportedEncodingException e2) {
			// TODO Auto-generated catch block
			e2.printStackTrace();
		}		
		
//		String strUrl = "http://box.zhangmen.baidu.com/x?op=12&title="
//				+ musicName + "$$" + singerName + "$$$$";
		
		String strUrl = "http://box.zhangmen.baidu.com/x?op=12&count=1&title=" +
		musicName + "$$"+ singerName +"$$$$";
		Log.d("test", strUrl);
		try {
			url = new URL(strUrl);
			Log.d("SearchLRC===============","url = "+url);
		} catch (Exception e1) {
			e1.printStackTrace();
		}
		BufferedReader br = null;
		String s;
		try {
			HttpURLConnection   httpConn   =   (HttpURLConnection)url.openConnection();
			//InputStream   in   =   httpConn.getInputStream();
			httpConn.connect();
			InputStreamReader inReader = new InputStreamReader(httpConn.getInputStream());
		
			
			//InputStreamReader in = new InputStreamReader(url.openStream());
			Log.d("the encode is ", inReader.getEncoding());
			br = new BufferedReader(inReader);
		} catch (IOException e1) {
			e1.printStackTrace();
			Log.d("tag", "br is null");
		}
		try {
			while ((s = br.readLine()) != null) {
				Log.d("SearchLRC","s = "+s);
				sb.append(s + "/r/n");				
			}
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally{
			try {
				br.close();
			} catch (IOException e) {				
				e.printStackTrace();
			}
		}
	}
	/*
	 * 根据lrc的地址，读取lrc文件流
	 * 生成歌词的ArryList
	 * 每句歌词是一个String
	 */
	public ArrayList fetchLyric() {
		int begin = 0, end = 0, number = 0;// number=0表示暂无歌词
		String strid = "";
		begin = sb.indexOf("<lrcid>");
		Log.d("test", "sb = " + sb);
		if (begin != -1) {
			end = sb.indexOf("</lrcid>", begin);
			strid = sb.substring(begin + 7, end);
			number = Integer.parseInt(strid);
		}
		String geciURL = "http://box.zhangmen.baidu.com/bdlrc/" + number / 100
				+ "/" + number + ".lrc";
		SetFindLRC(number);
		Log.d("test", "geciURL = " + geciURL);
		ArrayList gcContent =new ArrayList();
		String s = new String();
		try {
			url = new URL(geciURL);
		} catch (MalformedURLException e2) {
			e2.printStackTrace();
		}
		BufferedReader br = null;
		try {
			br = new BufferedReader(new InputStreamReader(url.openStream(), "GB2312"));
		} catch (IOException e1) {
			e1.printStackTrace();
		}
		if (br == null) {
			System.out.print("stream is null");
		} else {
			try {
				while ((s = br.readLine()) != null) {
					gcContent.add(s);
//					Log.d("SearchLRC","s = "+s);
				}
				br.close();
			} catch (IOException e) {
				e.printStackTrace();
			}
		}
		return gcContent;
	}
	private void SetFindLRC(int number) {
		if(number == 0)
			findNumber = false;
		else 
			findNumber = true;
	}
	public boolean GetFindLRC(){
		return findNumber;
	}
}

这个是网上找到的，自己做了一定的修改，开始的时候不能用，两点原因：

1.需要添加<uses-permission android:name="android.permission.INTERNET"></uses-permission>

2.传入汉字，编码问题，返回0