/** 查询本库在音乐媒体库中不存在的所有歌曲 */
private HashMap<String, Song> searchBySong(String filePaths) {
HashMap<String, Song> map = new HashMap<String, Song>();
String[] projection =
new String[] {
MediaStore.Audio.Media.DATA,
MediaStore.Audio.Media.ALBUM,
MediaStore.Audio.Media.ARTIST,
MediaStore.Audio.Media.DISPLAY_NAME,
MediaStore.Audio.Media.DURATION,
MediaStore.Audio.Media.MIME_TYPE,
MediaStore.Audio.Media.TITLE,
MediaStore.Audio.Media.SIZE
};
Cursor cr =
context
.getContentResolver()
.query(
MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
projection,
null,
null,
MediaStore.Audio.Media._ID);
Song song = null;
while (cr.moveToNext()) {
String filePath = cr.getString(cr.getColumnIndex(MediaStore.Audio.Media.DATA)).toLowerCase();
if (!filePaths.contains(filePath)) {
song = new Song();
String album = cr.getString(cr.getColumnIndex(MediaStore.Audio.Media.ALBUM));
String artist = cr.getString(cr.getColumnIndex(MediaStore.Audio.Media.ARTIST));
// 未知专辑
if (TextUtils.isEmpty(album) || album.toLowerCase().equals("<unknown>")) {
song.setAlbum(new Album(-1, "未知专辑", ""));
} else {
song.setAlbum(new Album(-1, album.trim(), ""));
}
// 未知歌手
if (TextUtils.isEmpty(artist) || artist.toLowerCase().equals("<unknown>")) {
song.setArtist(new Artist(-1, "未知歌手", ""));
} else {
song.setArtist(new Artist(-1, artist.trim(), ""));
}
song.setDisplayName(cr.getString(cr.getColumnIndex(MediaStore.Audio.Media.DISPLAY_NAME)));
song.setDownFinish(false);
song.setDurationTime(cr.getInt(cr.getColumnIndex(MediaStore.Audio.Media.DURATION)));
song.setFilePath(filePath);
song.setLike(false);
song.setLyricPath(null);
song.setMimeType(cr.getString(cr.getColumnIndex(MediaStore.Audio.Media.MIME_TYPE)));
song.setName(cr.getString(cr.getColumnIndex(MediaStore.Audio.Media.TITLE)));
song.setNet(false);
song.setNetUrl(null);
song.setPlayerList("$1$"); // 表示默认列表
song.setSize(cr.getInt(cr.getColumnIndex(MediaStore.Audio.Media.SIZE)));
map.put(filePath, song);
}
}
return map;
}
/** 扫描歌曲 */
public void scanMusic(String rs, Handler handler) {
List<String> list = new ArrayList<String>();
ScanMusicFilenameFilter filenameFilter = new ScanMusicFilenameFilter();
String[] filePaths = rs.split("\\$*\\$"); // 分隔出文件路径
for (int i = 0; i < filePaths.length; i++) {
if (!filePaths[i].trim().equals("")) {
File[] fs = new File(filePaths[i]).listFiles(filenameFilter);
if (fs != null) {
for (int j = 0; j < fs.length; j++) {
list.add(fs[j].getPath().toLowerCase());
}
}
}
}
SongDao songDao = new SongDao(context);
AlbumDao albumDao = new AlbumDao(context);
ArtistDao artistDao = new ArtistDao(context);
// 查询本库中的所有歌曲信息
String song_filePaths = songDao.getFilePathALL().toLowerCase();
// 查询本库在音乐媒体库中不存在的所有歌曲
HashMap<String, Song> map = searchBySong(song_filePaths);
int count = 0;
for (int i = 0, len = list.size(); i < len; i++) {
String fp = list.get(i);
// 判断歌曲是否在本库中
if (!song_filePaths.contains("$" + fp + "$")) {
// 显示扫描信息
Message msg = handler.obtainMessage();
Bundle data = new Bundle();
data.putString("rs", fp);
msg.what = 0;
msg.setData(data);
msg.sendToTarget();
Song song = map.get(fp);
if (song != null) {
// 处理专辑
Album album = song.getAlbum();
int albumId = albumDao.isExist(album.getName());
if (albumId == -1) {
albumId = (int) albumDao.add(album);
}
album.setId(albumId);
song.setAlbum(album);
// 处理歌手
Artist artist = song.getArtist();
int artistId = artistDao.isExist(artist.getName());
if (artistId == -1) {
artistId = (int) artistDao.add(artist);
}
artist.setId(artistId);
song.setArtist(artist);
} else {
song = new Song();
int unalbum_id = albumDao.isExist("未知专辑");
if (unalbum_id == -1) {
unalbum_id = (int) albumDao.add(new Album(0, "未知专辑", ""));
}
song.setAlbum(new Album(unalbum_id, "", ""));
int unartist_id = artistDao.isExist("未知歌手");
if (unartist_id == -1) {
unartist_id = (int) artistDao.add(new Artist(0, "未知歌手", ""));
}
song.setArtist(new Artist(unartist_id, "", ""));
song.setDisplayName(Common.clearDirectory(fp));
song.setDownFinish(false);
song.setDurationTime(-1);
song.setFilePath(fp);
song.setLike(false);
song.setLyricPath(null);
song.setMimeType("");
song.setName("");
song.setNet(false);
song.setNetUrl(null);
song.setPlayerList("$1$"); // 表示默认列表
song.setSize(-1);
}
if (songDao.add(song) > 0) count++;
}
}
// 显示扫描信息
Message msg = handler.obtainMessage();
Bundle data = new Bundle();
data.putString("rs", "扫描完毕，共" + count + "首！");
msg.what = 1;
msg.setData(data);
msg.sendToTarget();
}