refresh method

@override Future<void> refresh()

Implementation

@override
Future<void> refresh() async {
  if (_isDisposed || _state.isRefreshing || _state.isLoadingMore) return;
  final operation = ++_operationGeneration;
  _state.updateState(isRefreshing: true, pageNum: 1);
  _state.clearError();
  if (!_isDisposed) {
    notifyListeners();
  }
  try {
    final response = await loadData();
    if (_isDisposed || operation != _operationGeneration) return;
    _state.clear();
    _state.addData(response.data);
    _state.updateState(
      pageNum: _state.pageNum + 1,
      hasMore: _hasMoreData(response),
      initialRefresh: false,
      isRefreshing: false,
    );
    refreshController.refreshCompleted();
  } catch (e) {
    if (_isDisposed || operation != _operationGeneration) return;
    _state.updateState(
      hasMore: false,
      isRefreshing: false,
      error: e.toString(),
    );
    refreshController.refreshFailed();
  } finally {
    if (!_isDisposed) {
      notifyListeners();
    }
  }
}