我想做一个音乐播放器。但我无法从内部和外部存储中获取所有.mp3文件。谁能帮我。提前致谢。这是我的代码。
public void getListOfSong1(Context context) {
SongData.cart.clear();
Cursor c = context.getContentResolver().query(Media.INTERNAL_CONTENT_URI, null, "is_music != 0", null, null);
c.moveToFirst();
while (c.moveToNext()) {
SongData songData = new SongData();
int _id = c.getColumnIndex(MostAndRecentSongTableHelper.ID);
String title = c.getString(c.getColumnIndex(MostAndRecentSongTableHelper.TITLE));
String artist = c.getString(c.getColumnIndex(MostAndRecentSongTableHelper.ARTIST));
String album = c.getString(c.getColumnIndex(FavoriteSongsTableHelper.ALBUM));
long duration = c.getLong(c.getColumnIndex(MostAndRecentSongTableHelper.DURATION));
String data = c.getString(c.getColumnIndex("_data"));
long albumId = c.getLong(c.getColumnIndex(MostAndRecentSongTableHelper.ALBUM_ID));
String composer = c.getString(c.getColumnIndex("composer"));
songData.setId(_id);
songData.setSongTitle(title);
songData.setAlbum(album);
songData.setArtist(artist);
songData.setDuration(duration);
songData.setSongPath(data);
songData.setAlbumId(albumId);
if (!data.endsWith(".mp3")) {
if (!data.endsWith(".MP3")) {
}
}
this.listOfSongs.add(songData);
}
c.close();
}
请找到下面的功能，该功能能够获取您想要的所有mp3歌曲。
public void getMp3Songs() {
Uri allsongsuri = MediaStore.Audio.Media.EXTERNAL_CONTENT_URI;
String selection = MediaStore.Audio.Media.IS_MUSIC + " != 0";
cursor = managedQuery(allsongsuri, STAR, selection, null, null);
if (cursor != null) {
if (cursor.moveToFirst()) {
do {
song_name = cursor
.getString(cursor
.getColumnIndex(MediaStore.Audio.Media.DISPLAY_NAME));
int song_id = cursor.getInt(cursor
.getColumnIndex(MediaStore.Audio.Media._ID));
String fullpath = cursor.getString(cursor
.getColumnIndex(MediaStore.Audio.Media.DATA));
fullsongpath.add(fullpath);
album_name = cursor.getString(cursor
.getColumnIndex(MediaStore.Audio.Media.ALBUM));
int album_id = cursor.getInt(cursor
.getColumnIndex(MediaStore.Audio.Media.ALBUM_ID));
artist_name = cursor.getString(cursor
.getColumnIndex(MediaStore.Audio.Media.ARTIST));
int artist_id = cursor.getInt(cursor
.getColumnIndex(MediaStore.Audio.Media.ARTIST_ID));
} while (cursor.moveToNext());
}
cursor.close();
db.closeDatabase();
}
}
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