Querying Google Play Music database in Android

问题

I am trying to query for the playlists created by "Google Play Music" app but haven't been able to do so. I created a playlist using locally stored content. I used the following code to query:

Cursor c = managedQuery(MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI,
                                       new String[] {MediaStore.Audio.Playlists._ID,
                                                     MediaStore.Audio.Playlists.NAME
                                                    }, null, null, null);

This works fine for Winamp but not for Google Play Music. In fact, Winamp doesn't display the playlists created with Google Play Music. However, Google Play Music displays the playlists created with Winamp. My guess is that Google Play Music is using its own database to store the playlists where as other players use Content Provider with uri MediaStore.Audio.Playlists.EXTERNAL_CONTENT_URI to store their playlists. Is there a way to get playlists created with Google Play Music?

回答1:

I know this thread is old, but I have been grappling with this problem too.

Google Play Music exposes its playlists at this non-standard Content URI

// list all playlists with their ID and Name
Cursor cursor = getContentResolver().query(
    "content://com.google.android.music.MusicContent/playlists", 
    new String[] {"_id", "playlist_name" }, 
    null, null, null);

The Google Play Music content provider uses the following column names

isAllLocal
playlist_owner_name
hasLocal
hasRemote
hasAny
KeepOnId
playlist_art_url
playlist_share_token
_id
_count
playlist_owner_profile_photo_url
keeponSongCount
playlist_description
playlist_type
playlist_id
keeponDownloadedSongCount
playlist_name

I would have never figured this out without this really helpful app Content Provider Helper

回答2:

Try this.

String[] proj = {MediaStore.Audio.AudioColumns.TITLE,MediaStore.Audio.Media.ARTIST,MediaStore.Audio.Media._ID};
Uri gMusicUri = Uri.parse("content://com.google.android.music.MusicContent/audio");
Cursor cursor = getApplicationContext().getContentResolver()
            .query(gMusicUri,
                    proj, null, null, null);

回答3:

Î tried querying the ContenProvider like you can see it in Logcat when you Start the google Music app:

getContentResolver().query(Uri.parse("content://com.google.android.music.MusicContent/playlists"), null, null, null, null);

but I got no result :-( maybe Im doing s.th. wrong, didnt work much with contentproviders before, or maybe the contentprovider is not public for other apps.

来源：https://stackoverflow.com/questions/9669358/querying-google-play-music-database-in-android

标签

android

android-contentprovider