How to set the maximumFractionDigits in a decimalPattern in Flutter?

Question

Based on the user-locale I show decimals, for example: 1234.567 will be in:

US: 1,234.567
NL: 1.234,567

Therefor I use: NumberFormat.decimalPattern(locale.toString()).format(1234.567)

That works fine :)

But now I want to set the max-digets. There is a maximumFractionDigits, but how to apply this one?

This one doesn't work: NumberFormat.decimalPattern(locale.toString(), maximumFractionDigits: 2).format(1234.567)

On the currency it works like this: NumberFormat.currency(locale: locale.toString(), decimalDigits: 3).format(1234567)

Can you put an example of the desired output?

Mobina
– Mobina

2020-08-27 10:28:49 +00:00
Commented Aug 27, 2020 at 10:28 — Mobina
– Mobina, Commented Aug 27, 2020 at 10:28

JonnyH · Accepted Answer · 2020-08-27 11:53:34Z

3

From another question:

var forFractions = new NumberFormat();

forFractions.minimumFractionDigits = 2;
forFractions.maximumFractionDigits = 2;

format(num n) => forFractions.format(n);

print(format(15.501234));

So, create your format and set the maximumFractionDigits attribute then execute the format.

edited Aug 27, 2020 at 11:53

answered Aug 27, 2020 at 10:45

JonnyH

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1 Comment

Johan Walhout Over a year ago

Thanks! Of course it should be this way. Just to add. If you want to add the locale to the number then initialize it like: NumberFormat numberFormat = new NumberFormat.decimalPattern(locale.toString());

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