获取所有音乐文件的专辑封面
I am trying to fetch the album art of all the songs present on the phone. I am using MediaStore to fetch all the songs title,artist etc. How should I fetch album art ? I tried using MediaMetaDataRetriever but getting confused how to use it for multiple files. Can anyone please tweak this code?
我正在尝试获取手机上所有歌曲的专辑封面。我正在使用MediaStore来获取所有歌曲标题，艺术家等。我该如何获取专辑封面？我尝试使用MediaMetaDataRetriever，但对如何将它用于多个文件感到困惑。有人可以调整这段代码吗？
Activity class:
活动类：
public void getSongList() {
// retrieve song info
ContentResolver musicResolver = getContentResolver();
Uri musicUri = android.provider.MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
Cursor musicCursor = musicResolver.query(musicUri, null, null, null,
null);
metaRetriver.setDataSource(MainActivity.this,musicUri); // now how to loop over this
if (musicCursor != null && musicCursor.moveToFirst()) {
// get columns
int titleColumn = musicCursor.getColumnIndex(MediaColumns.TITLE);
int idColumn = musicCursor.getColumnIndex(BaseColumns._ID);
int artistColumn = musicCursor.getColumnIndex(AudioColumns.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());
}
3 个解决方案
#1
3
Once you have the album id, which you can get from that same cursor, you can query a different URI for the cover art path. see below for an example of approximately how I do it:
获得可从同一光标获取的相册ID后，您可以查询封面艺术路径的不同URI。请参阅下面的示例，了解我的工作方式：
private static String getCoverArtPath(Context context, long androidAlbumId) {
String path = null;
Cursor c = context.getContentResolver().query(
MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI,
new String[]{MediaStore.Audio.Albums.ALBUM_ART},
MediaStore.Audio.Albums._ID + "=?",
new String[]{Long.toString(androidAlbumId)},
null);
if (c != null) {
if (c.moveToFirst()) {
path = c.getString(0);
}
c.close();
}
return path;
}
You could get a Map of all album art by id using something like this (untested)
您可以使用以下内容获取所有专辑封面的地图（未经测试）
private static Map<Long, String> getCoverArtPaths(Context context) {
String HashMap<Long, String> map = new HashMap<Long, String>();
Cursor c = context.getContentResolver().query(
MediaStore.Audio.Albums.EXTERNAL_CONTENT_URI,
new String[]{MediaStore.Audio.Albums._ID, MediaStore.Audio.Albums.ALBUM_ART},
null,
null,
null);
if (c != null) {
for (c.moveToFirst(); !c.isAfterLast(); c.moveToNext()) {
map.add(c.getLong(0), c.getString(1));
}
c.close();
}
// returns a mapping of Album ID => art file path
return map;
}