diff --git a/app/src/main/java/com/example/musicplayer/app/Api.java b/app/src/main/java/com/example/musicplayer/app/Api.java
index 802817a..79a43d7 100644
--- a/app/src/main/java/com/example/musicplayer/app/Api.java
+++ b/app/src/main/java/com/example/musicplayer/app/Api.java
@@ -3,42 +3,41 @@ package com.example.musicplayer.app;
 import android.os.Environment;
 
 /**
+ * 提供音乐播放器应用中使用的各类API接口地址和常量。
  * Created by 残渊 on 2018/10/26.
  */
-
 public class Api {
-    //根据歌手获取歌手图片的baseUrl
-    public static final String SINGER_PIC_BASE_URL ="http://music.163.com/";
-    public static final String SINGER_PIC="api/search/get/web?csrf_token=&type=100";
-    //获取歌手图片需要添加user-agent的表头
-    public static final String HEADER_USER_AGENT="User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36";
+    // 根据歌手获取歌手图片的baseUrl
+    public static final String SINGER_PIC_BASE_URL = "http://music.163.com/"; 
+    public static final String SINGER_PIC = "api/search/get/web?csrf_token=&type=100";
+    // 获取歌手图片需要添加user-agent的表头
+    public static final String HEADER_USER_AGENT = "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/76.0.3809.132 Safari/537.36";
 
     /**
-     * 存取到手机内存的文件名
+     * 存储到手机内存的文件路径
      */
-    public static String STORAGE_IMG_FILE= App.getContext().getExternalFilesDir("") + "/yuanmusic/img/";
-    public static String STORAGE_LRC_FILE= App.getContext().getExternalFilesDir("") + "/yuanmusic/lrc/";
-    public static String STORAGE_SONG_FILE= Environment.getExternalStorageDirectory() + "/Sxmusic/download/";
-
-    //Fiddler抓包qq音乐网站后的地址
-    public static final String FIDDLER_BASE_QQ_URL ="https://c.y.qq.com/";
-    public static final String FIDDLER_BASE_SONG_URL="https://u.y.qq.com/"; //获取播放地址的baseUrl
-    //搜索功能
-    public static final String SEARCH_SONG ="soso/fcgi-bin/client_search_cp?n=30&format=json"; //歌曲，n为一页30首
-    public static final String SEARCH_ALBUM="soso/fcgi-bin/client_search_cp?n=20&format=json&t=8";//专辑，n为一页20张
-    //得到歌曲的播放地址
-    public static final String SONG_URL="cgi-bin/musicu.fcg?format=json";
-    public static final String SONG_URL_DATA_LEFT="%7B%22req_0%22%3A%7B%22module%22%3A%22vkey.GetVkeyServer%22%2C%22method%22%3A%22CgiGetVkey%22%2C%22param%22%3A%7B%22guid%22%3A%22358840384%22%2C%22songmid%22%3A%5B%22";
-    public static final String SONG_URL_DATA_RIGHT="%22%5D%2C%22songtype%22%3A%5B0%5D%2C%22uin%22%3A%221443481947%22%2C%22loginflag%22%3A1%2C%22platform%22%3A%2220%22%7D%7D%2C%22comm%22%3A%7B%22uin%22%3A%221443481947%22%2C%22format%22%3A%22json%22%2C%22ct%22%3A24%2C%22cv%22%3A0%7D%7D";
-    public static final String MP4 =".mp4";
-    //专辑照片
-    public static final String ALBUM_PIC="http://y.gtimg.cn/music/photo_new/T002R180x180M000";
-    public static final String JPG=".jpg";
-    //专辑详细
-    public static final String ALBUM_DETAIL="v8/fcg-bin/fcg_v8_album_info_cp.fcg?format=json";
-    //歌词
-    public static final String SONG_LRC ="soso/fcgi-bin/client_search_cp?p=1&n=30&format=json&t=7";//搜索歌词
-    public static final String ONLINE_SONG_LRC="https://c.y.qq.com/lyric/fcgi-bin/fcg_query_lyric_new.fcg?format=json&nobase64=1";//根据qq音乐的mid获取歌词
-    public static final String HEADER_REFERER="Referer:https://y.qq.com/portal/player.html";//得到歌词需要添加Referer的表头
+    public static String STORAGE_IMG_FILE = App.getContext().getExternalFilesDir("") + "/yuanmusic/img/";
+    public static String STORAGE_LRC_FILE = App.getContext().getExternalFilesDir("") + "/yuanmusic/lrc/";
+    public static String STORAGE_SONG_FILE = Environment.getExternalStorageDirectory() + "/Sxmusic/download/";
 
-}
+    // Fiddler抓包qq音乐网站后的地址
+    public static final String FIDDLER_BASE_QQ_URL = "https://c.y.qq.com/"; 
+    public static final String FIDDLER_BASE_SONG_URL = "https://u.y.qq.com/";  // 获取播放地址的baseUrl
+    // 搜索功能
+    public static final String SEARCH_SONG = "soso/fcgi-bin/client_search_cp?n=30&format=json"; // 歌曲，n为一页30首
+    public static final String SEARCH_ALBUM = "soso/fcgi-bin/client_search_cp?n=20&format=json&t=8"; // 专辑，n为一页20张
+    // 得到歌曲的播放地址
+    public static final String SONG_URL = "cgi-bin/musicu.fcg?format=json";
+    public static final String SONG_URL_DATA_LEFT = "%7B%22req_0%22%3A%7B%22module%22%3A%22vkey.GetVkeyServer%22%2C%22method%22%3A%22CgiGetVkey%22%2C%22param%22%3A%7B%22guid%22%3A%22358840384%22%2C%22songmid%22%3A%5B%22";
+    public static final String SONG_URL_DATA_RIGHT = "%22%5D%2C%22songtype%22%3A%5B0%5D%2C%22uin%22%3A%221443481947%22%2C%22loginflag%22%3A1%2C%22platform%22%3A%2220%22%7D%7D%2C%22comm%22%3A%7B%22uin%22%3A%221443481947%22%2C%22format%22%3A%22json%22%2C%22ct%22%3A24%2C%22cv%22%3A0%7D%7D";
+    public static final String MP4 = ".mp4";
+    // 专辑照片
+    public static final String ALBUM_PIC = "http://y.gtimg.cn/music/photo_new/T002R180x180M000"; 
+    public static final String JPG = ".jpg";
+    // 专辑详细
+    public static final String ALBUM_DETAIL = "v8/fcg-bin/fcg_v8_album_info_cp.fcg?format=json";
+    // 歌词
+    public static final String SONG_LRC = "soso/fcgi-bin/client_search_cp?p=1&n=30&format=json&t=7"; // 搜索歌词
+    public static final String ONLINE_SONG_LRC = "https://c.y.qq.com/lyric/fcgi-bin/fcg_query_lyric_new.fcg?format=json&nobase64=1"; // 根据qq音乐的mid获取歌词 
+    public static final String HEADER_REFERER = "Referer:https://y.qq.com/portal/player.html"; // 得到歌词需要添加Referer的表头 
+}
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