How to style a header in the Flutter Date Range Picker (SfDateRangePicker)?
In the Flutter Date Range Picker, you can style the header by using headerStyle property in the onViewChanged callback of the date range picker.
In onViewChanged callback, style the date range picker header by using DateRangePickerHeaderStyle properties.
void viewChanged(DateRangePickerViewChangedArgs viewChangedDetails) {
final DateTime startDate = viewChangedDetails.visibleDateRange.startDate!;
final DateTime endDate = viewChangedDetails.visibleDateRange.endDate!;
final int count = endDate.difference(startDate).inDays;
final DateTime midDate = startDate.add(Duration(days: count ~/ 2));
SchedulerBinding.instance!.addPostFrameCallback((duration) {
setState(() {
if (midDate.month % 2 == 0) {
_headerStyle = DateRangePickerHeaderStyle(
textAlign: TextAlign.center,
backgroundColor: Colors.lightGreen,
textStyle: TextStyle(
fontSize: 25,
fontStyle: FontStyle.normal,
letterSpacing: 5,
color: Colors.red,
fontWeight: FontWeight.w500));
} else {
_headerStyle = DateRangePickerHeaderStyle(
textAlign: TextAlign.center,
backgroundColor: Colors.purple,
textStyle: TextStyle(
fontSize: 25,
fontStyle: FontStyle.normal,
letterSpacing: 5,
color: Colors.orange,
fontWeight: FontWeight.w500));
}
});
});
}
Assign _headerStyle to the headerStyle property of the date range picker.
child: SfDateRangePicker( headerStyle: _headerStyle, onViewChanged: viewChanged, ),
Conclusion
I hope you enjoyed learning about how to style a header in the Flutter Date Range Picker.
You can refer to our Flutter Date Range Picker feature tour page to know about its other groundbreaking feature representations documentation and how to quickly get started for configuration specifications. You can also explore our Flutter Date Range Picker example to understand how to create and manipulate data.
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