Flutter - Converting minutes into H:M

Question

I'm looking for a method to convert minutes into hours and minutes. I'm using the intl package through DateFormat but this requires both hours and minutes so it won't do.

If I have 100 minutes, I would like this to be converted to 01:40. Thanks

socasanta · Accepted Answer · 2019-07-07T01:31:17.797

23

Does this work?

String durationToString(int minutes) {
    var d = Duration(minutes:minutes);
    List<String> parts = d.toString().split(':');
    return '${parts[0].padLeft(2, '0')}:${parts[1].padLeft(2, '0')}';
}

print(durationToString(100)); //returns 01:40

edited Jul 07 '19 at 01:31

answered Jul 07 '19 at 00:05

socasanta

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9
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I need to be able to pass a variable to this and I can't change `d` to `int` from `Duration` as I'm getting `Only valid value is 0:1` – Jake Jul 07 '19 at 00:58
@Jake I updated it to be more in line with original ask. Hope it helps, otherwise I might need more info to understand the question. – socasanta Jul 07 '19 at 01:32

score 13 · Answer 2 · answered Jul 07 '19 at 05:18

13

This will work for you


String getTimeString(int value) {
  final int hour = value ~/ 60;
  final int minutes = value % 60;
  return '${hour.toString().padLeft(2, "0")}:${minutes.toString().padLeft(2, "0")}';
}

answered Jul 07 '19 at 05:18

Ajil O.

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40
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Posted this before I saw [socasanta](https://stackoverflow.com/a/56918492/6891637)'s answer. It might be the better implementation – Ajil O. Jul 07 '19 at 05:20
2

Never knew about ~ or .padLeft(). Thanks. – tazboy Aug 22 '20 at 15:38

Flutter - Converting minutes into H:M

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