Question

我希望能够获得当前正在播放的歌曲的专辑封面。我可以使用

获取名称，专辑，艺术家

 private BroadcastReceiver mReceiver = new BroadcastReceiver() {

    @Override
    public void onReceive(Context context, Intent intent) {
        String action = intent.getAction();
        String cmd = intent.getStringExtra("command");
        Log.v("tag ", action + " / " + cmd);
        String artist = intent.getStringExtra("artist");
        String album = intent.getStringExtra("album");
        String track = intent.getStringExtra("track");
        Log.v("tag", artist + ":" + album + ":" + track);
        Fullname = (artist + ":" + album + ":" + track);
        Toast.makeText(MusicPlayer.this, track, Toast.LENGTH_SHORT).show();
        update();

但是，这对于获取专辑封面并没有帮助。这里要求获得专辑封面的大多数帖子都要求使用

MediaStore.Audio.AlbumColumns.AlbumArt

但我似乎无法弄清楚如何使用它。当我尝试使用

时

Cursor cursor = getActivity().managedQuery(MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI, 
            new String[] {MediaStore.Audio.Albums._ID, MediaStore.Audio.Albums.ALBUM_ART}, 
            MediaStore.Audio.Albums._ID+ "=?", 
            new String[] {String.valueOf(albumId)}, 
            null);

if (cursor.moveToFirst()) {
    String path = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Albums.ALBUM_ART));
    // do whatever you need to do
}

（来自here）或类似的任何内容我一直遇到没有albumId的问题。我读到我应该将albumid设置为

album_id = cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID))

但是如果不使用预先存在的专辑，我无法在没有另一个光标的情况下获得很长时间，而我无法理解如何做到这一点。任何帮助将不胜感激。

Answer 1

我遇到了同样的问题。意图只有媒体ID。所以我们必须得到与该媒体文件相关的专辑ID。

这是我使用的解决方案：

    //get the song's id from intent
    long songId = intent.getLongExtra("id", -1);

    //get the albumid using media/song id
    if(songId!=-1) {
            String selection = MediaStore.Audio.Media._ID + " = "+songId+"";

            Cursor cursor = getContentResolver().query(
                    MediaStore.Audio.Media.EXTERNAL_CONTENT_URI, new String[] {
                            MediaStore.Audio.Media._ID, MediaStore.Audio.Media.ALBUM_ID},
                    selection, null, null);

            if (cursor.moveToFirst()) {
                long albumId = cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID));
                Log.d("Album ID : ", ""+albumId);

                Uri sArtworkUri = Uri.parse("content://media/external/audio/albumart");
                Uri albumArtUri = ContentUris.withAppendedId(sArtworkUri, albumId);

                //set the album art in imageview    
                albumArt.setImageURI(albumArtUri);
            }
            cursor.close();
    }

Answer 2

获取当前播放歌曲的专辑ID并调用以下功能以获取专辑封面：

public static Bitmap getAlbumart(Context context,Long album_id){
    Bitmap bm = null;
    BitmapFactory.Options options = new BitmapFactory.Options();
    try{
        final Uri sArtworkUri = Uri.parse("content://media/external/audio/albumart");
        Uri uri = ContentUris.withAppendedId(sArtworkUri, album_id);
        ParcelFileDescriptor pfd = context.getContentResolver().openFileDescriptor(uri, "r");
        if (pfd != null){
            FileDescriptor fd = pfd.getFileDescriptor();
            bm = BitmapFactory.decodeFileDescriptor(fd, null, options);
            pfd = null;
            fd = null;
        }
    } catch(Error ee){}
    catch (Exception e) {}
    return bm;
}

如何获取当前正在播放的歌曲的专辑封面

2 个答案: