Flutter Helper Utils

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DateTime Extension ​

tryToDateTime ​

Safely attempts to convert a string to a DateTime object. Returns null if the conversion fails.

dart
String? dateStr = "2023-01-01";
print(dateStr.tryToDateTime);  // Output: DateTime object or null
String? dateStr = "2023-01-01";
print(dateStr.tryToDateTime);  // Output: DateTime object or null

toDateTime ​

Converts a string to a DateTime object. Throw an exception if the conversion fails.

dart
String dateStr = "2023-01-01";
print(dateStr.toDateTime);  // Output: DateTime object
String dateStr = "2023-01-01";
print(dateStr.toDateTime);  // Output: DateTime object

dateFormat ​

Returns a DateFormat object based on the string format provided.

dart
String format = "yMd";
print(format.dateFormat);  // Output: DateFormat object
String format = "yMd";
print(format.dateFormat);  // Output: DateFormat object

toDateWithFormat ​

Converts a string to a DateTime object using a specific format.

dart
String dateStr = "1-2-2023";
print(dateStr.toDateWithFormat("d-M-y"));  // Output: DateTime object
String dateStr = "1-2-2023";
print(dateStr.toDateWithFormat("d-M-y"));  // Output: DateTime object

tryToDateWithFormat ​

Safely attempts to convert a string to a DateTime object using a specific format. Returns null if the conversion fails.

dart
String? dateStr = "1-2-2023";
print(dateStr.tryToDateWithFormat("d-M-y"));  // Output: DateTime object or null
String? dateStr = "1-2-2023";
print(dateStr.tryToDateWithFormat("d-M-y"));  // Output: DateTime object or null

timestampToDate ​

Converts a timestamp string to a DateTime object.

dart
String timestamp = "1635530400000";
print(timestamp.timestampToDate);  // Output: DateTime object
String timestamp = "1635530400000";
print(timestamp.timestampToDate);  // Output: DateTime object

toSmallMonthName and toFullMonthName ​

Convert an integer representing a month to its abbreviated or full name.

dart
int month = 1;
print(month.toSmallMonthName);  // Output: "Jan"
print(month.toFullMonthName);  // Output: "January"
int month = 1;
print(month.toSmallMonthName);  // Output: "Jan"
print(month.toFullMonthName);  // Output: "January"

toSmallDayName and toFullDayName ​

Convert an integer representing a day of the week to its abbreviated or full name.

dart
int day = 1;
print(day.toSmallDayName);  // Output: "Mon"
print(day.toFullDayName);  // Output: "Monday"
int day = 1;
print(day.toSmallDayName);  // Output: "Mon"
print(day.toFullDayName);  // Output: "Monday"

timestampToDate (numeric) ​

Converts a numeric timestamp to a DateTime object.

dart
int timestamp = 1635530400000;
print(timestamp.timestampToDate);  // Output: DateTime object
int timestamp = 1635530400000;
print(timestamp.timestampToDate);  // Output: DateTime object

local ​

Returns a new DateTime object representing the local date and time.

dart
DateTime? date = DateTime.utc(2023, 1, 1);
print(date.local);  // Output: DateTime object in local time
DateTime? date = DateTime.utc(2023, 1, 1);
print(date.local);  // Output: DateTime object in local time

toUtcIso ​

Returns an ISO-8601 string representation of the UTC date.

dart
DateTime? date = DateTime.utc(2023, 1, 1);
print(date.toUtcIso);  // Output: "2023-01-01T00:00:00.000Z"
DateTime? date = DateTime.utc(2023, 1, 1);
print(date.toUtcIso);  // Output: "2023-01-01T00:00:00.000Z"

isTomorrow ​

Check if the date is tomorrow.

dart
DateTime date = DateTime.now().add(Duration(days: 1));
print(date.isTomorrow);  // Output: true
DateTime date = DateTime.now().add(Duration(days: 1));
print(date.isTomorrow);  // Output: true

isToday ​

Check if the date is today.

dart
DateTime date = DateTime.now();
print(date.isToday);  // Output: true
DateTime date = DateTime.now();
print(date.isToday);  // Output: true

isYesterday ​

Check if the date was yesterday.

dart
DateTime date = DateTime.now().subtract(Duration(days: 1));
print(date.isYesterday);  // Output: true
DateTime date = DateTime.now().subtract(Duration(days: 1));
print(date.isYesterday);  // Output: true

isPresent ​

Check if the date is in the future.

dart
DateTime date = DateTime.now().add(Duration(days: 1));
print(date.isPresent);  // Output: true
DateTime date = DateTime.now().add(Duration(days: 1));
print(date.isPresent);  // Output: true

isPast ​

Check if the date is in the past.

dart
DateTime date = DateTime.now().subtract(Duration(days: 1));
print(date.isPast);  // Output: true
DateTime date = DateTime.now().subtract(Duration(days: 1));
print(date.isPast);  // Output: true

isInPastWeek ​

Check if the date is within the last week.

dart
DateTime date = DateTime.now().subtract(Duration(days: 3));
print(date.isInPastWeek);  // Output: true
DateTime date = DateTime.now().subtract(Duration(days: 3));
print(date.isInPastWeek);  // Output: true

isInThisYear ​

Check if the date is in the current year.

dart
DateTime date = DateTime.now();
print(date.isInThisYear);  // Output: true
DateTime date = DateTime.now();
print(date.isInThisYear);  // Output: true

isFirstDayOfMonth ​

Check if the date is the first day of the month.

dart
DateTime date = DateTime(DateTime.now().year, DateTime.now().month, 1);
print(date.isFirstDayOfMonth);  // Output: true
DateTime date = DateTime(DateTime.now().year, DateTime.now().month, 1);
print(date.isFirstDayOfMonth);  // Output: true

isLastDayOfMonth ​

Check if the date is the last day of the month.

dart
DateTime date = DateTime(DateTime.now().year, DateTime.now().month + 1, 0);
print(date.isLastDayOfMonth);  // Output: true
DateTime date = DateTime(DateTime.now().year, DateTime.now().month + 1, 0);
print(date.isLastDayOfMonth);  // Output: true

isLeapYear ​

Check if the year of the date is a leap year.

dart
DateTime date = DateTime(2024, 1, 1);
print(date.isLeapYear);  // Output: true
DateTime date = DateTime(2024, 1, 1);
print(date.isLeapYear);  // Output: true

format and tryFormat ​

format a DateTime object as a string using a specified format, while tryFormat attempts to do the same but returns null if unsuccessful.

dart
DateTime date = DateTime.now();
print(date.format("yMd"));  // Output: "2023-01-01"
print(date.tryFormat("yMd"));  // Output: "2023-01-01" or null
DateTime date = DateTime.now();
print(date.format("yMd"));  // Output: "2023-01-01"
print(date.tryFormat("yMd"));  // Output: "2023-01-01" or null

passedDuration ​

Gets the duration that has passed since the date.

dart
DateTime date = DateTime.now().subtract(Duration(days: 1));
print(date.passedDuration);  // Output: Duration object
DateTime date = DateTime.now().subtract(Duration(days: 1));
print(date.passedDuration);  // Output: Duration object

remainingDuration ​

Gets the duration remaining until the date.

dart
DateTime date = DateTime.now().add(Duration(days: 1));
print(date.remainingDuration);  // Output: Duration object
DateTime date = DateTime.now().add(Duration(days: 1));
print(date.remainingDuration);  // Output: Duration object

passedDays ​

Gets the number of days that have passed since the date.

dart
DateTime date = DateTime.now().subtract(Duration(days: 1));
print(date.passedDays);  // Output: 1
DateTime date = DateTime.now().subtract(Duration(days: 1));
print(date.passedDays);  // Output: 1

remainingDays ​

Gets the number of days remaining until the date.

dart
DateTime date = DateTime.now().add(Duration(days: 1));
print(date.remainingDays);  // Output: 1
DateTime date = DateTime.now().add(Duration(days: 1));
print(date.remainingDays);  // Output: 1

+ (Addition) ​

Adds a Duration to the DateTime object.

dart
DateTime date = DateTime.now();
Duration duration = Duration(days: 1);
print(date + duration);  // Output: DateTime object
DateTime date = DateTime.now();
Duration duration = Duration(days: 1);
print(date + duration);  // Output: DateTime object

- (Subtraction) ​

Subtracts a Duration from the DateTime object.

dart
DateTime date = DateTime.now();
Duration duration = Duration(days: 1);
print(date - duration);  // Output: DateTime object
DateTime date = DateTime.now();
Duration duration = Duration(days: 1);
print(date - duration);  // Output: DateTime object

isAtSameYearAs ​

Check if the given DateTime object is in the same year as the current DateTime object. This function does not account for timezones.

dart
DateTime dateTime1 = DateTime(2022, 6, 15);
DateTime dateTime2 = DateTime(2022, 1, 5);
print(dateTime1.isAtSameYearAs(dateTime2)); // Output: true
DateTime dateTime1 = DateTime(2022, 6, 15);
DateTime dateTime2 = DateTime(2022, 1, 5);
print(dateTime1.isAtSameYearAs(dateTime2)); // Output: true

isAtSameMonthAs ​

Check if the given DateTime object is in the same month and year as the current DateTime object. This function does not account for timezones.

dart
DateTime dateTime1 = DateTime(2022, 6, 15);
DateTime dateTime2 = DateTime(2022, 6

, 5);
print(dateTime1.isAtSameMonthAs(dateTime2)); // Output: true
DateTime dateTime1 = DateTime(2022, 6, 15);
DateTime dateTime2 = DateTime(2022, 6

, 5);
print(dateTime1.isAtSameMonthAs(dateTime2)); // Output: true

isAtSameDayAs ​

Check if the given DateTime object is on the same day, month, and year as the current DateTime object. This function does not account for timezones.

dart
DateTime dateTime1 = DateTime(2022, 6, 15);
DateTime dateTime2 = DateTime(2022, 6, 15);
print(dateTime1.isAtSameDayAs(dateTime2)); // Output: true
DateTime dateTime1 = DateTime(2022, 6, 15);
DateTime dateTime2 = DateTime(2022, 6, 15);
print(dateTime1.isAtSameDayAs(dateTime2)); // Output: true

isAtSameHourAs ​

Check if the given DateTime object is at the same hour, day, month, and year as the current DateTime object. This function does not account for timezones.

dart
DateTime dateTime1 = DateTime(2022, 6, 15, 12);
DateTime dateTime2 = DateTime(2022, 6, 15, 12);
print(dateTime1.isAtSameHourAs(dateTime2)); // Output: true
DateTime dateTime1 = DateTime(2022, 6, 15, 12);
DateTime dateTime2 = DateTime(2022, 6, 15, 12);
print(dateTime1.isAtSameHourAs(dateTime2)); // Output: true

isAtSameMinuteAs, isAtSameSecondAs, isAtSameMillisecondAs, isAtSameMicrosecondAs ​

These methods provide finer granularity check, ranging from minutes to microseconds.

startOfDay, startOfMonth, startOfYear ​

These methods return a new DateTime object representing the start of the day, month, or year of the original DateTime object.

dart
DateTime dateTime = DateTime(2022, 6, 15, 12, 30);
print(dateTime.startOfDay); // Output: 2022-06-15 00:00:00.000
DateTime dateTime = DateTime(2022, 6, 15, 12, 30);
print(dateTime.startOfDay); // Output: 2022-06-15 00:00:00.000

tomorrow, yesterday ​

These methods return a new DateTime object representing the next or previous day.

dart
DateTime dateTime = DateTime(2022, 6, 15);
print(dateTime.tomorrow); // Output: 2022-06-16 00:00:00.000
print(dateTime.yesterday); // Output: 2022-06-14 00:00:00.000
DateTime dateTime = DateTime(2022, 6, 15);
print(dateTime.tomorrow); // Output: 2022-06-16 00:00:00.000
print(dateTime.yesterday); // Output: 2022-06-14 00:00:00.000

addOrRemoveYears, addOrRemoveMonth, addOrRemoveDay, addOrRemoveMinutes, addOrRemoveSeconds ​

These methods allow you to add or remove a certain time unit from the DateTime object. To remove, pass a negative number.

dart
DateTime dateTime = DateTime(2022, 6, 15);
print(dateTime.addOrRemoveYears(1)); // Output: 2023-06-15 00:00:00.000
DateTime dateTime = DateTime(2022, 6, 15);
print(dateTime.addOrRemoveYears(1)); // Output: 2023-06-15 00:00:00.000

min, max ​

Returns the smaller or larger date between the current and another DateTime object.

dart
DateTime dateTime1 = DateTime(2022, 6, 15);
DateTime dateTime2 = DateTime(2021, 6, 15);
print(dateTime1.min(dateTime2)); // Output: 2021-06-15 00:00:00.000
DateTime dateTime1 = DateTime(2022, 6, 15);
DateTime dateTime2 = DateTime(2021, 6, 15);
print(dateTime1.min(dateTime2)); // Output: 2021-06-15 00:00:00.000

addDays, addHours ​

These methods add a certain number of days or hours to the DateTime object.

dart
DateTime dateTime = DateTime(2022, 6, 15);
print(dateTime.addDays(1)); // Output: 2022-06-16 00:00:00.000
DateTime dateTime = DateTime(2022, 6, 15);
print(dateTime.addDays(1)); // Output: 2022-06-16 00:00:00.000