How to convert time in seconds to 00:00:00 format in Flutter?-CodePudding

For example, if times is given as 1.05 seconds, we need to convert it as 00:01:05.

How can we achieve this in Flutter?

Also, if a time is given as duration in milliseconds, how do we convert it to the 00:00:00 format?

CodePudding user response：

You just need some simple integer maths to separate the duration into the units you want and some string formatting to make sure that single-digit numbers get leading zeros.

String formatForVideo(Duration d) {
  final millis = d.inMilliseconds;
  if (millis >= 3600000) {
    throw FormatException('too big to format');
  }
  final minutes = _pad2(d.inMinutes);
  final seconds = _pad2(d.inSeconds % 60);
  final cents = _pad2((millis % 1000) ~/ 10);

  return '$minutes:$seconds.$cents';
}

String _pad2(int i) => i.toString().padLeft(2, '0');

Which gives expected results:

print(formatForVideo(Duration(minutes: 0, seconds: 1, milliseconds: 50))); // 00:01.05
print(formatForVideo(Duration(minutes: 9, seconds: 51, milliseconds: 50))); // 09:51.05
print(formatForVideo(Duration(minutes:60))); // exception

CodePudding user response：

The output of this definition => 00:00:00

DateTime time = DateTime(1990, 1, 1, 0, 0, 0, 0, 0);

Then when you want to add a period to this time

time.add(const Duration(seconds: 100,milliseconds:200))

and for output =>

String timeString = DateFormat.Hms().format(time);

print(timeString);

Result =>> 00:01:40