android音乐播放器开发在线加载歌词，android开发计算器源码

24. import android.util.Log;

25. public class OnlineLrcUtil {

26. private static String TAG = “OnlineLrcUtil”;

27. private static OnlineLrcUtil instance;

28. public static final String lrcRootPath = Environment

29. .getExternalStorageDirectory().toString()

30. + “/SweetMusicPlayer/Lyrics/”;

31. public static final String queryLrcURLRoot = “http://geci.me/api/lyric/”;

32. public static OnlineLrcUtil getInstance() {

33. if (null == instance) {

34. instance = new OnlineLrcUtil();

35. }

36. return instance;

37. }

38. public String getQueryLrcURL(String title, String artist) {

39. return queryLrcURLRoot + Encode(title) + “/” + Encode(artist);

40. }

41. public String getLrcURL(String title, String artist) {

42. String queryLrcURLStr = getQueryLrcURL(title, artist);

43. try {

44. URL url = new URL(queryLrcURLStr);

45. URLConnection urlConnection = url.openConnection();

46. urlConnection.connect();

47. BufferedReader in = new BufferedReader(new InputStreamReader(

48. urlConnection.getInputStream()));

49. StringBuffer sb = new StringBuffer();

50. String temp;

51. while ((temp = in.readLine()) != null) {

52. sb.append(temp);

53. }

54. JSONObject jObject = new JSONObject(sb.toString());

55. int count = jObject.getInt(“count”);

56. int index = count == 0 ? 0 : new Random().nextInt() % count;

57. JSONArray jArray = jObject.getJSONArray(“result”);

58. JSONObject obj = jArray.getJSONObject(index);

59. return obj.getString(“lrc”);

60. } catch (MalformedURLException e) {

61. // TODO Auto-generated catch block

62. e.printStackTrace();

63. } catch (IOException e) {

64. // TODO Auto-generated catch block

65. e.printStackTrace();

66. } catch (JSONException e) {

67. // TODO Auto-generated catch block

68. e.printStackTrace();

69. }

70. return null;

71. }

72. // 歌手，歌曲名中的空格进行转码

73. public String Encode(String str) {

74. try {

75. return URLEncoder.encode(str.trim(), “utf-8”);

76. } catch (UnsupportedEncodingException e) {

77. // TODO Auto-generated catch block

78. e.printStackTrace();

79. }

80. return str;

81. }

82. // 歌词文件网络地址，歌词文件本地缓冲地址

83. public boolean wrtieContentFromUrl(String urlPath, String lrcPath) {

84. Log.i(TAG, “lrcURL” + urlPath);

85. try {

86. URL url = new URL(urlPath);

87. URLConnection urlConnection = url.openConnection();

88. urlConnection.connect();

89. HttpURLConnection httpConn = (HttpURLConnection) urlConnection;

90. if (httpConn.getResponseCode() == HttpURLConnection.HTTP_OK) {

91. File file = new File(lrcRootPath);

92. if (!file.exists()) {

93. file.mkdirs();

94. }

95. BufferedReader bf = new BufferedReader(new InputStreamReader(

96. urlConnection.getInputStream(), “utf-8”));

97. PrintWriter out = new PrintWriter(new BufferedWriter(

98. new OutputStreamWriter(new FileOutputStream(lrcPath),

99. “utf-8”)));

100. char c[] = new char[256];

101. int temp = -1;

102. while ((temp = bf.read()) != -1) {

103. bf.read©;

104. out.write©;

105. }

106. bf.close();

107. out.close();

108. return true;

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133. }

134. // System.out.println(“getFile:”+str);

135. } catch (MalformedURLException e) {

136. // TODO Auto-generated catch block

137. e.printStackTrace();

138. } catch (IOException e) {

139. // TODO Auto-generated catch block

140. e.printStackTrace();

141. }

142. return false;

143. }

144. public String getLrcPath(String title, String artist) {

145. return lrcRootPath + title + " - " + artist + “.lrc”;

146. }

147. }

LrcProcess 类，用来保存处理下载后的文件

public class LrcProcess {

private List lrcList; //List集合存放歌词内容对象

private LrcContent mLrcContent; //声明一个歌词内容对象

/**

• 无参构造函数用来实例化对象

*/

public LrcProcess() {

mLrcContent = new LrcContent();

lrcList = new ArrayList();

}

/**

• 读取歌词

• @param path

• @return

*/

public String readLRC(String path) {

//定义一个StringBuilder对象，用来存放歌词内容

StringBuilder stringBuilder = new StringBuilder();

File f = new File(path.replace(".mp3", “.lrc”));

try {

//创建一个文件输入流对象

FileInputStream fis = new FileInputStream(f);

InputStreamReader isr = new InputStreamReader(fis, “utf-8”);

BufferedReader br = new BufferedReader(isr);

String s = “”;

while((s = br.readLine()) != null) {

//替换字符

s = s.replace("[", “”);

s = s.replace("]", “@”);

//分离“@”字符

String splitLrcData[] = s.split("@");

if(splitLrcData.length > 1) {

Log.i(“INFO”, splitLrcData[1]+“歌词”);

mLrcContent.setLrcStr(splitLrcData[1]);

Log.i(“INFO”, splitLrcData[0]+“时间”);

//处理歌词取得歌曲的时间

int lrcTime = time2Str(splitLrcData[0]);

mLrcContent.setLrcTime(lrcTime);

//添加进列表数组

lrcList.add(mLrcContent);

//新创建歌词内容对象

mLrcContent = new LrcContent();

}

}

} catch (FileNotFoundException e) {

e.printStackTrace();

stringBuilder.append(“木有歌词文件，赶紧去下载！…”);

} catch (IOException e) {

e.printStackTrace();

stringBuilder.append(“木有读取到歌词哦！”);

}

return stringBuilder.toString();

}

/**

• 解析歌词时间

• 歌词内容格式如下：

• [00:02.32]陈奕迅

• [00:03.43]好久不见

• [00:05.22]歌词制作 王涛

• @param timeStr

• @return

*/

public int time2Str(String timeStr) {

timeStr = timeStr.replace(":", “.”);

timeStr = timeStr.replace(".", “@”);

String timeData[] = timeStr.split("@"); //将时间分隔成字符串数组

//分离出分、秒并转换为整型

int minute = Integer.parseInt(timeData[0]);

int second = Integer.parseInt(timeData[1]);

int millisecond = Integer.parseInt(timeData[2]);

//计算上一行与下一行的时间转换为毫秒数

int currentTime = (minute * 60 + second) * 1000 + millisecond * 10;

return currentTime;

}

public List getLrcList() {

return lrcList;

}

Mainactivity 大概调用方法

public class MainActivity extends Activity {

//好久不见 青花

private String mMusicName=“夜曲”;

//陈奕迅 周传雄

private String mMusicAutor=“周杰伦”;

@SuppressLint(“SdCardPath”)

protected void onCreate(Bundle savedInstanceState) {

super.onCreate(savedInstanceState);

setContentView(R.layout.activity_main);