refresh method

dynamic refresh([ bool isInitRefresh = false ])

Implementation

refresh([bool isInitRefresh = false]) {
  if (_headerState == XBRefreshState.loading) {
    return;
  }
  setState(() {
    _isInProcess = true;
    _headerState = XBRefreshState.loading;
    _headerTopPadding = 0;
  });
  _callRefresh(!isInitRefresh || widget.initRefreshDelay);
}