hefuyicoder
文件显示歌曲和点击进去看到的歌曲数量不一致。
比如：显示11首，但是，点击进入该文件夹，会发现歌曲比它多。原因，music/和music/songs 下面都有歌曲，比如music有11首。而music/songs 有3首。然后，文件夹music/显示11首，但是，点击进入会发现有14首
public static List<MusicInfo> getMusicFromFolder(Context context, long parent) { List<MusicInfo> infos = new ArrayList<MusicInfo>(); final String[] proj_id = new String[]{MediaStore.Files.FileColumns._ID}; Uri uri1 = MediaStore.Files.getContentUri("external"); /* final String where_id = MediaStore.Files.FileColumns.PARENT + " =" + String.valueOf(parent) + " and " + WHERE;*/ StringBuilder where_id = new StringBuilder(MediaStore.Files.FileColumns.PARENT + " =" + String.valueOf(parent) + " and " + WHERE); if (SharePreferencesUtils.getFilterOption(context)) { where_id.append(" and " + MediaStore.Audio.Media.DURATION + " > " + FILTER_DURATION); }
Cursor cursorId = context.getContentResolver().query(uri1, proj_id, where_id.toString(), null, null);
String[] strIDs = new String[cursorId.getCount()] ;
if (cursorId != null) {
int index_id = cursorId.getColumnIndex(MediaStore.Files.FileColumns._ID);
int i = 0;
for (cursorId.moveToFirst(); !cursorId.isAfterLast(); cursorId.moveToNext()) {
int file_ID = cursorId.getInt(index_id);
strIDs[i] = String.valueOf(file_ID);
i++;
}
}
if (cursorId != null) {
cursorId.close();
}
List<String> parameters = new ArrayList<>();
for (int i = 0; i < strIDs.length; i++) {
parameters.add("?");
}
Cursor cursorMedia = context.getContentResolver().query(MediaStore.Audio.Media.EXTERNAL_CONTENT_URI,
null, MediaStore.Audio.Media._ID +" in (" + TextUtils.join(",", parameters) + ")",strIDs,MediaStore.Audio.Media.DEFAULT_SORT_ORDER);
if (cursorMedia == null) {
return infos;
}
while(cursorMedia.moveToNext()) {
MusicInfo info = new MusicInfo();
long id = cursorMedia.getLong(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media._ID));
String tilte = cursorMedia.getString(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media.TITLE));
String album = cursorMedia.getString(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM));
String artist = cursorMedia.getString(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST));
if (artist.equals(MediaStore.UNKNOWN_STRING)) {
artist = context.getString(R.string.unknown_name);
}
String url = cursorMedia.getString(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media.DATA));
long duration = cursorMedia.getLong(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media.DURATION));
long size = cursorMedia.getLong(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media.SIZE));
long artistsId = cursorMedia.getInt(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media.ARTIST_ID));
long albumId = cursorMedia.getInt(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media.ALBUM_ID));
String displayName = cursorMedia.getString(cursorMedia.getColumnIndexOrThrow(MediaStore.Audio.Media.DISPLAY_NAME));
info.setName(tilte);
info.setId(id);
info.setPath(url);
info.setArtists(artist);
info.setAlbum(album);
info.setArtistsId(artistsId);
info.setAlbumId(albumId);
info.setSize(size);
info.setDuration(duration);
info.setDisplayName(displayName);
String tag = PingYinUtil.chineneToSpell(tilte);
if (tag.length() < 1) {
return infos;
}
char c = tag.toUpperCase().charAt(0);
if (!('A' <= c && c <= 'Z')) {
tag = "#";
}
info.setFirstLetter(String.valueOf(tag.charAt(0)).toUpperCase());
info.setPingYinName(tag);
infos.add(info);
}
if (cursorMedia != null) {
cursorMedia.close();
}
return infos;
}
