如何捕捉 sdcard 中的所有歌曲以及音乐等 sdcard 文件夹中的所有歌曲

Posted 2023-05-07

【中文标题】如何捕捉 sdcard 中的所有歌曲以及音乐等 sdcard 文件夹中的所有歌曲

【英文标题】：how to catch all songs in sdcard and also sdcard folders like music and etc

【发布时间】：2018-10-05 14:46:32

【问题描述】：

我使用此代码查找 mp3 文件：

`

   // String extStore = System.getenv("EXTERNAL_STORAGE");
   // File home = new File(extStore);


    //String extStore = "/storage/extSdCarcd";
    String extStore = "/storage/";
    File home = new File(extStore);

    if(home.listFiles(new FileExtensionFilter()).length>0)

        for(File file : home.listFiles(new FileExtensionFilter()))

            HashMap<String,String> song = new HashMap<String, String>();
            song.put("title",file.getName().substring(0,(file.getName().length()-4)));
            song.put("path",file.getPath());
            songsList.add(song);
        
    

    return songsList;
`

如您所见，我尝试了很多方法来获取 .mp3 文件，但如果我的蓝牙文件夹或音乐文件夹中有 mp3 文件，它们将无济于事。它们仅用于 sdcard 中的音乐

【参考方案1】：

要获取所有 mp3 歌曲，您必须使用媒体存储数据库，它将列出设备的所有歌曲

private ArrayList<HashMap<String, String>> songsList = new ArrayList<HashMap<String, String>>();


public ArrayList<HashMap<String, String>> getPlayList(Context c) 

    final Cursor mCursor = c.getContentResolver().query(
        MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
        new String[]  MediaColumns.TITLE, MediaColumns.DATA, AudioColumns.ALBUM , null, null,
        "LOWER(" + MediaColumns.TITLE + ") ASC");

    String songTitle = "";
    String songPath = "";

    /* run through all the columns we got back and save the data we need into the arraylist for our listview*/
    if (mCursor.moveToFirst()) 
        do 
            songTitle = mCursor.getString(mCursor.getColumnIndexOrThrow(MediaColumns.TITLE));
            songPath = mCursor.getString(mCursor.getColumnIndexOrThrow(MediaColumns.DATA));

            HashMap<String, String> song = new HashMap<String, String>();
            song.put("songTitle", songTitle);
            song.put("songPath", songPath);
            songsList.add(song);

         while (mCursor.moveToNext());
       

    mCursor.close(); //cursor has been consumed so close it
    return songsList;