private HashSet getOpenedPlaylists() {
HashSet<String> myHashSet = new HashSet<>();
for (AbstractSong data : getAllItems()) {
if (data.getClass() == PlaylistData.class && ((PlaylistData) data).isExpanded()) {
myHashSet.add(String.valueOf(data.getId()));
}
}
return myHashSet;
}
public void updatePlaylist() {
ArrayList<AbstractSong> playlists = getPlaylists();
for (AbstractSong playlistData : playlists) {
((PlaylistData) playlistData)
.setSongs(
((PlaylistData) playlistData)
.getSongsFromPlaylist(getContext(), playlistData.getId()));
}
updateAdapter(playlists);
}
private void setOpened() {
ArrayList<AbstractSong> allItems = getAllItems();
HashSet<String> myHashSet =
(HashSet<String>)
MusicApp.getSharedPreferences().getStringSet(PREF_LAST_OPENED, new HashSet<String>());
for (AbstractSong data : getAllItems()) {
if (data.getClass() == PlaylistData.class
&& myHashSet.contains(String.valueOf(data.getId()))) {
if (((PlaylistData) data).getSongs().size() == 0 || ((PlaylistData) data).isExpanded())
continue;
allItems.addAll(allItems.indexOf(data) + 1, ((PlaylistData) data).getSongs());
((PlaylistData) data).setExpanded(true);
}
}
updateAdapter(allItems);
}