/** 向歌单添加音乐 */
public static void addSongToPlaylist(
final Context context, final PlayList playlist, final Song song) {
Cursor cur =
context
.getContentResolver()
.query(
MediaStore.Audio.Playlists.Members.getContentUri(
"external", playlist.getmPlayListId()),
null,
null,
null,
MediaStore.Audio.Playlists.Members.TRACK + " ASC");
long count = 0;
if (cur.moveToLast()) {
count = cur.getLong(cur.getColumnIndex(MediaStore.Audio.Playlists.Members.TRACK));
}
cur.close();
ContentValues values = new ContentValues();
values.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, count + 1);
values.put(MediaStore.Audio.Playlists.Members.AUDIO_ID, song.getmSongId());
Uri uri =
MediaStore.Audio.Playlists.Members.getContentUri("external", playlist.getmPlayListId());
ContentResolver resolver = context.getContentResolver();
resolver.insert(uri, values);
resolver.notifyChange(Uri.parse("content://media"), null);
}
/** 批量向歌单添加音乐 */
public static void addSongListToPlaylist(
final Context context, final PlayList playlist, final ArrayList<Song> songs) {
Cursor cur =
context
.getContentResolver()
.query(
MediaStore.Audio.Playlists.Members.getContentUri(
"external", playlist.getmPlayListId()),
null,
null,
null,
MediaStore.Audio.Playlists.Members.TRACK + " ASC");
long count = 0;
if (cur.moveToLast()) {
count = cur.getLong(cur.getColumnIndex(MediaStore.Audio.Playlists.Members.TRACK));
}
cur.close();
ContentValues[] values = new ContentValues[songs.size()];
for (int i = 0; i < songs.size(); i++) {
values[i] = new ContentValues();
values[i].put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, count + 1);
values[i].put(MediaStore.Audio.Playlists.Members.AUDIO_ID, songs.get(i).getmSongId());
}
Uri uri =
MediaStore.Audio.Playlists.Members.getContentUri("external", playlist.getmPlayListId());
ContentResolver resolver = context.getContentResolver();
resolver.bulkInsert(uri, values);
resolver.notifyChange(Uri.parse("content://media"), null);
}
/**
* Creates the {@link Cursor} used to run the query.
*
* @param context The {@link Context} to use.
* @param playlistID The playlist the songs belong to.
* @return The {@link Cursor} used to run the song query.
*/
public static final Cursor makePlaylistSongCursor(
final Context context, final String playlistID) {
final StringBuilder mSelection = new StringBuilder();
mSelection.append(AudioColumns.IS_MUSIC + "=1");
mSelection.append(" AND " + AudioColumns.TITLE + " != ''"); // $NON-NLS-2$
return context
.getContentResolver()
.query(
MediaStore.Audio.Playlists.Members.getContentUri("external", Long.valueOf(playlistID)),
new String[] {
/* 0 */
MediaStore.Audio.Playlists.Members._ID,
/* 1 */
MediaStore.Audio.Playlists.Members.AUDIO_ID,
/* 2 */
AudioColumns.TITLE,
/* 3 */
AudioColumns.ARTIST,
/* 4 */
AudioColumns.ALBUM
},
mSelection.toString(),
null,
MediaStore.Audio.Playlists.Members.DEFAULT_SORT_ORDER);
}
public static void addToPlaylist(Context context, long[] ids, long playlistid) {
if (ids == null) {
// this shouldn't happen (the menuitems shouldn't be visible
// unless the selected item represents something playable
Log.e("MusicBase", "ListSelection null");
} else {
int size = ids.length;
ContentResolver resolver = context.getContentResolver();
// need to determine the number of items currently in the playlist,
// so the play_order field can be maintained.
String[] cols = new String[] {"count(*)"};
Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", playlistid);
Cursor cur = resolver.query(uri, cols, null, null, null);
cur.moveToFirst();
int base = cur.getInt(0);
cur.close();
int numinserted = 0;
for (int i = 0; i < size; i += 1000) {
makeInsertItems(ids, i, 1000, base);
numinserted += resolver.bulkInsert(uri, sContentValuesCache);
}
String message =
context
.getResources()
.getQuantityString(R.plurals.NNNtrackstoplaylist, numinserted, numinserted);
Toast.makeText(context, message, Toast.LENGTH_SHORT).show();
// mLastPlaylistSelected = playlistid;
}
}
public static void addAlbumToPlaylist(ContentResolver contentResolver, long playlistId, long id) {
String[] projection = {
MediaStore.Audio.Media._ID,
};
String selection = MediaStore.Audio.Media.ALBUM_ID + "=" + id;
Cursor cursor =
contentResolver.query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
projection,
selection,
null,
MediaStore.Audio.Media.TRACK);
if (cursor != null) {
int base = getLastTrackNumber(contentResolver, playlistId) + 1;
while (cursor.moveToNext()) {
ContentValues contentValues = new ContentValues();
contentValues.put(MediaStore.Audio.Playlists.Members.AUDIO_ID, cursor.getLong(0));
contentValues.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, base);
base++;
contentResolver.insert(
MediaStore.Audio.Playlists.Members.getContentUri("external", playlistId),
contentValues);
}
}
}
public static List<Song> getAllSongsFromPlaylist(
ContentResolver contentResolver, long playlistId) {
String[] projection = {
MediaStore.Audio.Playlists.Members._ID,
MediaStore.Audio.Playlists.Members.DATA,
MediaStore.Audio.Playlists.Members.ARTIST,
MediaStore.Audio.Playlists.Members.TITLE,
MediaStore.Audio.Playlists.Members.ALBUM,
MediaStore.Audio.Playlists.Members.DURATION,
MediaStore.Audio.Playlists.Members.PLAY_ORDER
};
Cursor cursor =
contentResolver.query(
MediaStore.Audio.Playlists.Members.getContentUri("external", playlistId),
projection,
null,
null,
MediaStore.Audio.Playlists.Members.PLAY_ORDER);
if (cursor != null) {
List<Song> songs = new ArrayList<Song>();
while (cursor.moveToNext()) {
songs.add(new Song(cursor));
}
return songs;
}
return null;
}
/** 获得播放清单里的所有歌曲 */
public static ArrayList<Song> getPlayListSongs(Context context, PlayList playList) {
ArrayList<Song> songs = new ArrayList<>();
Cursor cursor =
context
.getContentResolver()
.query(
MediaStore.Audio.Playlists.Members.getContentUri(
"external", playList.getmPlayListId()),
playListSongProjection,
MediaStore.Audio.Media.IS_MUSIC + " != 0",
null,
null);
for (int i = 0; i < cursor.getCount(); i++) {
cursor.moveToPosition(i);
Song song =
new Song(
cursor.getInt(cursor.getColumnIndex(MediaStore.Audio.Playlists.Members.AUDIO_ID)),
cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Playlists.Members.TITLE)),
cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Playlists.Members.ARTIST)),
cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Playlists.Members.ALBUM)),
cursor.getLong(cursor.getColumnIndex(MediaStore.Audio.Playlists.Members.DURATION)),
cursor.getString(cursor.getColumnIndex(MediaStore.Audio.Playlists.Members.DATA)),
cursor.getInt(cursor.getColumnIndex(MediaStore.Audio.Playlists.Members.ALBUM_ID)),
cursor.getInt(cursor.getColumnIndex(MediaStore.Audio.Playlists.Members.ARTIST_ID)));
songs.add(song);
}
cursor.close();
return songs;
}
/**
* Builds a query that will return all the songs in the playlist with the given id.
*
* @param id The id of the playlist in MediaStore.Audio.Playlists.
* @param projection The columns to query.
* @param selection The selection to pass to the query, or null.
* @return The initialized query.
*/
public static QueryTask buildPlaylistQuery(long id, String[] projection, String selection) {
Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", id);
String sort = MediaStore.Audio.Playlists.Members.PLAY_ORDER;
QueryTask result = new QueryTask(uri, projection, selection, null, sort);
result.type = TYPE_PLAYLIST;
return result;
}
/** {@inheritDoc} */
@Override
public void remove(final int which) {
mSong = mAdapter.getItem(which - 1);
mAdapter.remove(mSong);
mAdapter.notifyDataSetChanged();
final Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", mPlaylistId);
getActivity()
.getContentResolver()
.delete(uri, MediaStore.Audio.Playlists.Members.AUDIO_ID + "=" + mSong.mSongId, null);
}
public static void removeFromPlaylist(ContentResolver resolver, int audioId, long playlistId) {
String[] cols = new String[] {"count(*)"};
Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", playlistId);
Cursor cur = resolver.query(uri, cols, null, null, null);
cur.moveToFirst();
final int base = cur.getInt(0);
cur.close();
ContentValues values = new ContentValues();
resolver.delete(uri, MediaStore.Audio.Playlists.Members.AUDIO_ID + "=" + audioId, null);
}
// Adds the specified song to Android's MediaStore.
public static void addToMediaStorePlaylist(
ContentResolver resolver, int audioId, long playlistId) {
String[] cols = new String[] {"count(*)"};
Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", playlistId);
Cursor cur = resolver.query(uri, cols, null, null, null);
cur.moveToFirst();
final int base = cur.getInt(0);
cur.close();
ContentValues values = new ContentValues();
values.put(MediaStore.Audio.Playlists.Members.PLAY_ORDER, Integer.valueOf(base + audioId));
values.put(MediaStore.Audio.Playlists.Members.AUDIO_ID, audioId);
resolver.insert(uri, values);
}
/** {@inheritDoc} */
@Override
public void drop(final int from, final int to) {
if (from == 0 || to == 0) {
mAdapter.notifyDataSetChanged();
return;
}
final int realFrom = from - 1;
final int realTo = to - 1;
mSong = mAdapter.getItem(realFrom);
mAdapter.remove(mSong);
mAdapter.insert(mSong, realTo);
mAdapter.notifyDataSetChanged();
MediaStore.Audio.Playlists.Members.moveItem(
getActivity().getContentResolver(), mPlaylistId, realFrom, realTo);
}
public static long[] getSongListForPlaylist(Context context, long plid) {
final String[] ccols = new String[] {MediaStore.Audio.Playlists.Members.AUDIO_ID};
Cursor cursor =
query(
context,
MediaStore.Audio.Playlists.Members.getContentUri("external", plid),
ccols,
null,
null,
MediaStore.Audio.Playlists.Members.DEFAULT_SORT_ORDER);
if (cursor != null) {
long[] list = getSongListForCursor(cursor);
cursor.close();
return list;
}
return sEmptyList;
}
public static int getLastTrackNumber(ContentResolver contentResolver, long playlistId) {
String[] projection = {
MediaStore.Audio.Playlists.Members._ID, MediaStore.Audio.Playlists.Members.PLAY_ORDER
};
String selection = MediaStore.Audio.Playlists.Members.PLAYLIST_ID + "=" + playlistId;
Cursor cursor =
contentResolver.query(
MediaStore.Audio.Playlists.Members.getContentUri("external", playlistId),
projection,
selection,
null,
MediaStore.Audio.Playlists.Members.PLAY_ORDER);
if (cursor != null && cursor.moveToLast()) {
return cursor.getInt(1);
} else {
return -1;
}
}
public static void clearPlaylist(ContentResolver contentResolver, long playlistId) {
contentResolver.delete(
MediaStore.Audio.Playlists.Members.getContentUri("external", playlistId), null, null);
}
public static void clearPlaylist(Context context, int plid) {
Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", plid);
context.getContentResolver().delete(uri, null, null);
return;
}
// Playlist member retriever
public ArrayList<SongItem> getSongsInPlaylist(PlaylistItem pl) {
Uri uri = MediaStore.Audio.Playlists.Members.getContentUri("external", pl.id);
return queryForSongs(uri, null, MediaStore.Audio.Media.IS_MUSIC + "=1", null, null);
}