flutter-examples/flutter_date_pickers-master

flutter_date_pickers

Allows to use date pickers without dialog. Provides some customizable styles for date pickers.

A set of date pickers:

• DayPicker for one day
• WeekPicker for whole week
• RangePicker for random range
• MonthPicker for month

How to style date picker

Every date picker constructor take a style object as a parameter (if no styles passed - defaults will be used).

For single value pickers (DayPicker, MonthPicker) it is DatePickerStyles object;

For range pickers (WeekPicker, RangePickers) it is DatePickerRangeStyles object;

Customizable styles: for all date pickers

Property	Description
TextStyle displayedPeriodTitle	title of the date picker
TextStyle currentDateStyle	style for current date
TextStyle disabledDateStyle	style for disabled dates (before first and after last date user can pick)
TextStyle selectedDateStyle	style for selected date
BoxDecoration selectedSingleDateDecoration	decoration for selected date in case single value is selected
TextStyle defaultDateTextStyle	style for date which is neither current nor disabled nor selected

only for range date pickers (WeekPicker, RangePicker)

Property	Description
BoxDecoration selectedPeriodStartDecoration	decoration for the first date of the selected range
BoxDecoration selectedPeriodLastDecoration	decoration for the first date of the selected range
BoxDecoration selectedPeriodMiddleDecoration	Decoration for the date of the selected range which is not first date and not end date of this range

How to make some dates not selectable date picker

By default only dates before firstDate and after lastDate are not selectable. But you can set custom disabled days. DayPicker, WeekPicker and RangePicker take a SelectableDayPredicate selectableDayPredicate where you can specify function which returns if some date is disabled or not.

If some date is disabled for selection it gets disabledDateStyle.

If selected range or week pretends to include such disabled date UnselectablePeriodException occurs. To handle it - pass onSelectionError callback to date picker.

How to make special decorations for some dates

By default cells are decorated with datePickerStyles slyles (or default if no styles was passed to date picker). If you need special decoration for some days use eventDecorationBuilder. Currently only for DayPicker, WeekPicker and RangePicker.

• If date is not selected basic styles will be merged with styles from eventDecorationBuilder.
• If date is current date styles from eventDecorationBuilder win (if there are).
• Otherwise basic styles (datePickerStyles) win.

What time I will get after selection?

If one day selected: you will get start of the day (00:00:00) by default. If selected firstDate - you will get time of it.

If range/week selected: for start you will get start of the day (00:00:00) by default. If selected firstDate - you will get time of it. for end you will get end of the day (23:59:59.999) by default. If selected lastDate - you will get time of it.

If month selected: you will get start (00:00:00) of the 1 day of month by default. If selected month same as month of the firstDate - you will get firstDate.

Usage

// Create week date picker with passed parameters
Widget buildWeekDatePicker (DateTime selectedDate, DateTime firstAllowedDate, DateTime lastAllowedDate, ValueChanged<DatePeriod> onNewSelected) {

 // add some colors to default settings
    DatePickerRangeStyles styles = DatePickerRangeStyles(
      selectedPeriodLastDecoration: BoxDecoration(
          color: Colors.red,
          borderRadius: BorderRadius.only(
              topRight: Radius.circular(10.0),
              bottomRight: Radius.circular(10.0))),
      selectedPeriodStartDecoration: BoxDecoration(
        color: Colors.green,
        borderRadius: BorderRadius.only(
            topLeft: Radius.circular(10.0), bottomLeft: Radius.circular(10.0)),
      ),
      selectedPeriodMiddleDecoration: BoxDecoration(
          color: Colors.yellow, shape: BoxShape.rectangle),
    );
    
  return WeekPicker(
      selectedDate: selectedDate,
      onChanged: onNewSelected,
      firstDate: firstAllowedDate,
      lastDate: lastAllowedDate,
      datePickerStyles: styles
  );
}

Example app

Please checkout example.

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