如何在SDCard中捕捉所有歌曲以及音乐和音乐等SDCARD文件夹

Question

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，我尝试了许多获取.mp3文件的方法，但是如果我在蓝牙文件夹或音乐文件夹中有一个MP3文件，它们将无济于事。他们只是在sdcard中的音乐

Answer 1

用于获取所有MP3歌曲，您必须使用Media Store DB，该歌曲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;
}