请注意，我在这里和其他网站上已经遇到过类似的问题及其答案。我也有一种适用于某些设备的解决方案（我的G2X运行CyanogenMod
7.1，我妻子的HD2运行自定义ROM，模拟器运行Android 2.1）。但是没有，但是在我的运行CyanogenMod的Nook上可以使用。

我的问题是：在所有android设备上获取专辑封面的最可靠，最通用的方法是什么？特定设备，版本或音乐应用程序的陷阱是什么（我不是说第三方播放器，我是指Google音乐与旧版音乐客户端）？我当前的代码是：

// Is this what's making my code fail on other devices?
public final Uri sArtworkUri = Uri.parse("content://media/external/audio/albumart");

// This works, and well on all devices
private int[] getAlbumIds(ContentResolver contentResolver)
{
    List<Integer> result = new ArrayList<Integer>();
    Cursor cursor = contentResolver.query(MediaStore.Audio.Media.getContentUri("external"), new String[]{MediaStore.Audio.Media.ALBUM_ID}, null, null, null);

    if (cursor.moveToFirst())
    {
        do{
            int albumId = cursor.getInt(0);
            if (!result.contains(albumId))
                result.add(albumId);
        } while (cursor.moveToNext());
    }

    int[] resultArray = new int[result.size()];
    for (int i = 0; i < result.size(); i++)
        resultArray[i] = result.get(i);

    return resultArray;
}

// This is the bit I want to make more robust, make sure that it works on all devices
private Shader getAlbumArt(ContentResolver contentResolver, int albumId, int width, int height)
{
    Uri uri = ContentUris.withAppendedId(sArtworkUri, albumId);
    InputStream input = null;
    try {
        input = contentResolver.openInputStream(uri);
        if (input == null)
            return null;

        Bitmap artwork = BitmapFactory.decodeStream(input);
        input.close();
        if (artwork == null)
            return null;

        Bitmap scaled = Bitmap.createScaledBitmap(artwork, width, height, true);
        if (scaled == null)
            return null;

        if (scaled != artwork)
            artwork.recycle();
        artwork = scaled;

        return new BitmapShader(artwork, Shader.TileMode.CLAMP, Shader.TileMode.CLAMP);
    } catch (IOException e) {
        e.printStackTrace();
        return null;
    }
}

在此先感谢，Ananth