pickView： 当用户不滑动pickView时，怎么做默认选择

UIPickerView * pickView = [self.view viewWithTag:10086];

//   long index =  [pickView selectRow:1 inComponent:0 animated:YES];

    long index =  [pickView selectedRowInComponent:0];

    [self pickerView:pickView didSelectRow:index inComponent:0];