如何从设备的内部和外部存储器中获取songart (AlbumArt)？

Question

我正在尝试制作一个音乐播放器应用程序。

我想要一个列表视图与歌曲的图像和歌名和艺术家的名字。

就像这样。

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我已经用内容解析器弄清楚了songName和songTitle，但我不知道如何显示这首歌各自的艺术。

这是我的ListSong.java，用来从设备上获取歌曲。

public class ListSong extends Fragment {

    private ArrayList<Song> songList;
    private ListView songView;

    @Override
    public View onCreateView(LayoutInflater inflater, ViewGroup container, Bundle savedInstanceState) {
        View rootView = inflater.inflate(R.layout.listsongs, container, false);

        songView = (ListView)rootView.findViewById(R.id.songsList);
        songList = new ArrayList<Song>();

        getSongList();

        SongAdapter songAdt = new SongAdapter(getActivity(), songList);
        songView.setAdapter(songAdt);

        return rootView;

    }

    public void getSongList(){
        ContentResolver musicResolver = getActivity().getContentResolver();
        Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
        Cursor musicCursor = musicResolver.query(musicUri, null, null, null, null);
        if(musicCursor!=null && musicCursor.moveToFirst()){
            //get columns
            int titleColumn = musicCursor.getColumnIndex
                    (android.provider.MediaStore.Audio.Media.TITLE);
            int idColumn = musicCursor.getColumnIndex
                    (android.provider.MediaStore.Audio.Media._ID);
            int artistColumn = musicCursor.getColumnIndex
                    (android.provider.MediaStore.Audio.Media.ARTIST);
            //add songs to list
            do {
                long thisId = musicCursor.getLong(idColumn);
                String thisTitle = musicCursor.getString(titleColumn);
                String thisArtist = musicCursor.getString(artistColumn);
                songList.add(new Song(thisId, thisTitle, thisArtist));
            }
            while (musicCursor.moveToNext());
        }
    }

}

这里是我的SongInfo(Song.java)类

public class Song {

    private long id;
    private String title;
    private String artist;

    public Song(long songID, String songTitle, String songArtist) {
        this.id = songID;
        this.title = songTitle;
        this.artist = songArtist;
    }

    public long getID(){return id;}
    public String getTitle(){return title;}
    public String getArtist(){return artist;}

}

我只是想知道，有没有什么方法可以把各自的歌曲艺术带到他们的歌曲中。

Answer 1

尝试使用以下代码获取Song Art：

ContentResolver musicResolver = getContentResolver();
Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor musicCursor = musicResolver.query(musicUri, null, null, null, null);
int albumIDColumn = musicCursor.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID);
long thisAlbumID = musicCursor.getLong(albumIDColumn);
Cursor cursor = musicResolver.query(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(thisAlbumID)},
                        null);          
String imagePath = "";
if (cursor.moveToFirst()) {
    imagePath = cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Albums.ALBUM_ART));
}