How to get the current view dates in Flutter date range picker (SfDateRangePicker)?

In flutter date range picker, you can get the current month start and end dates using the onViewChanged callback.

Step 1:

Inside the state, initialize the controller for the date range picker and set the default values for start and end date of the current month.

final DateRangePickerController _controller = DateRangePickerController();
String _startDate = '', _endDate = '';

Step 2:

Place the date picker inside the body of the Scaffold widget and trigger the onViewChanged callback of the date picker.

body: Column(
  children: <Widget>[
    Container( height:50,
        child: Text('StartDate:''$_startDate')),
    Container(height:50
        ,child: Text('EndDate:''$_endDate')),
    Card(
      margin: const EdgeInsets.fromLTRB(40, 100, 50, 40),
      child: SfDateRangePicker(
        controller: _controller,
        view: DateRangePickerView.month,
        onViewChanged: viewChanged,
      ),
    )
  ],
),

Step 3:

Using the onViewChanged callback of the date picker get the start and dates of the current month.

void viewChanged(DateRangePickerViewChangedArgs args) {
 
    _startDate = DateFormat('dd, MMMM yyyy')
        .format(args.visibleDateRange.startDate!)
        .toString();
    _endDate=DateFormat('dd, MMMM yyyy')
        .format(args.visibleDateRange.endDate!)
        .toString();
    SchedulerBinding.instance!.addPostFrameCallback((duration) {
      setState(() {});
    });
}

View document in Syncfusion Flutter Knowledge base

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