refresh method
刷新列表
会重新加载第一页
Implementation
Future<List<T>?> refresh([ARG? args]) async {
_currentPage = _initPage;
_noMoreData = false;
try {
_dataList = await _pageFetch(_currentPage, args);
if (_subject.isClosed) return null;
_subject.add(_dataList);
} catch (e) {
if (_subject.isClosed) return null;
_subject.addError(e);
}
return _dataList;
}