从mediastore获取专辑封面图片

Question

使用以下代码列出所有相册详情，包括专辑名称，专辑，艺术家姓名和专辑封面图片

以下是我的代码，

  public Map<String, String> getAlbumList(Context c) {
        //setup map and cursor
        Map<String, String> result = new HashMap<>();
        String selection = MediaStore.Audio.Media.IS_MUSIC + " !=0";
        final Cursor mCursor = c.getContentResolver().query(
                MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
                new String[] {MediaStore.Audio.Media.ALBUM,
                        MediaStore.Audio.Media.ARTIST,
                        MediaStore.Audio.Media.ALBUM_ID,
                        MediaStore.Audio.AlbumColumns.ALBUM_ART,}, selection, null,
                "LOWER ("+MediaStore.Audio.Media.ALBUM + ") ASC");

        int count = mCursor.getCount();


        String[] mArtist = new String[count];
        String[] mAlbum = new String[count];
        String[] AlbumID = new String[count];
        String[] imageId = new String[count];

        int i = 0;
        int j = 0;
        if (mCursor.moveToFirst()) {

            do {
                mAlbum[i] = mCursor
                        .getString(mCursor
                                .getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM));
                mArtist[i] = mCursor.getString(mCursor
                        .getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST));



                AlbumID[i] = Long.toString(mCursor
                        .getLong(mCursor
                                .getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM_ID)));
                imageId[i] =  mCursor.getString(mCursor
                        .getColumnIndexOrThrow(MediaStore.Audio.AlbumColumns.ALBUM_ART));
                //checking for same previous value
                if(result.containsValue(mAlbum[i])){

                }else{
                    result.put("artist" + j, mArtist[i]);
                    result.put("album" + j, mAlbum[i]);
                    result.put("AlbumID" + j, AlbumID[i]);
                    result.put("AlbumID" + j, imageId[i]);
                    j = j + 1;
                }
                i = i + 1;

            } while (mCursor.moveToNext());
        }
        mCursor.close();
        return result;
    }

但我收到以下错误消息

  

android.database.sqlite.SQLiteException：没有这样的专栏：album_art   （代码1）:,编译时：SELECT album，artist，album_id，album_art   FROM audio WHERE（is_music！= 0）ORDER BY LOWER（专辑）ASC

我怎样才能解决这个问题？

我试图用专辑名称

获取albumimage