backward property

VoidCallback? backward

Moves to the previous view programmatically with animation by checking that the previous view dates falls between the minimum and maximum date range.

Note: If the current view has the minimum date range, it will not move to the previous view.

See also:

• SfHijriDateRangePicker.showNavigationArrow, which allows to display the navigation arrows on the header view of the date range picker.
• forward, which used to navigate to the next view of the date range picker programmatically.
• SfHijriDateRangePicker.onViewChanged, the callback which notifies when the current view visible date changed on the date range picker.
• Knowledge base: How to do programmatic navigation
• Knowledge base: How to programmatically navigate to adjacent dates
• Knowledge base: How to programmatically navigate

class MyApp extends StatefulWidget {
 @override
 MyAppState createState() => MyAppState();
}

class MyAppState extends State<MyApp> {
HijriDatePickerController _pickerController = HijriDatePickerController();

 @override
 Widget build(BuildContext context) {
   return MaterialApp(
     home: Scaffold(
       appBar: AppBar(
         actions: <Widget>[
           IconButton(
             icon: Icon(Icons.arrow_forward),
             onPressed: () {
               _pickerController.forward!();
             },
           )
         ],
         title: Text('Date Range Picker Demo'),
         leading: IconButton(
           icon: Icon(Icons.arrow_back),
           onPressed: () {
             _pickerController.backward!();
           },
         ),
       ),
       body: SfHijriDateRangePicker(
         controller: _pickerController,
         view: HijriDatePickerView.month,
         selectionMode: DateRangePickerSelectionMode.single,
       ),
     ),
   );
 }
}

Implementation

VoidCallback? backward;