Change DecimalFormat locale

Question

I have custom DecimalFormat in Edittext's addTextChangedListener method, everything is working perfectly but when I change language (locale) my addTextChangedListener is not working.

double answer = inputDouble * counterToDouble;
DecimalFormat df = new DecimalFormat("##.########");
// df=(DecimalFormat)numberFormat;

df.setRoundingMode(RoundingMode.DOWN);
answer = Double.parseDouble(df.format(answer));

unicoinsAmmount.setText(String.valueOf(df.format(answer)));

I searched about my problem and found a NumberFormat solution:

NumberFormat numberFormat = NumberFormat.getNumberInstance(Locale.US);

but I don't know how I can use this code.

Try DecimalFormat df = DecimalFormat.getInstance(Locale.US); — , Apr 05 '16 at 06:43
thank but i how i can use locale with this pattern ##.########? @Viren — BekaKK, Apr 05 '16 at 06:46
Try DecimalFormat formater = DecimalFormat.getInstance(Locale.US); formater.applyPattern("#.##"); — , Apr 05 '16 at 06:51

Joe Bloggs · Answer 1 · 2021-12-27T13:03:32.187

131

You can specify locale for DecimalFormat this way:

DecimalFormatSymbols symbols = new DecimalFormatSymbols(Locale.US);
DecimalFormat format = new DecimalFormat("##.########", symbols);

edited Dec 27 '21 at 13:03

answered Jun 06 '18 at 10:40

Joe Bloggs

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should be ACCEPTED answer! – Alessandro Scarozza Oct 11 '18 at 19:53
yeah it should be – Abhijith Brumal Mar 02 '22 at 09:08

score 50 · Accepted Answer · edited Nov 28 '19 at 13:27

50

You may try by first converting to NumberFormat and then Cast it to DecimalFormat

Integer vc = 3210000;
NumberFormat nf = NumberFormat.getNumberInstance(Locale.US);
DecimalFormat formatter = (DecimalFormat) nf;
formatter.applyPattern("#,###,###");
String fString = formatter.format(vc);
return convertNumbersToEnglish(fString);

edited Nov 28 '19 at 13:27

Ahmed Ashour

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answered Jun 11 '17 at 03:44

Faisal Naseer

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Also in the documentation. https://docs.oracle.com/javase/tutorial/i18n/format/decimalFormat.html – OneCricketeer Jun 11 '17 at 03:55
That's Java's `java.text.DecimalFormat`. The question is about Android's `android.icu.text.DecimalFormat`. – Agent_L Aug 17 '21 at 16:03

Sasha Balyas · Answer 3 · 2019-09-12T09:19:41.153

26

You can use basic constructor for setting Locale while creating DecimalFormat object:

DecimalFormat dFormat = new DecimalFormat("#.#", new DecimalFormatSymbols(Locale.US));

edited Sep 12 '19 at 09:19

answered Feb 12 '19 at 13:23

Sasha Balyas

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score 1 · Answer 4 · answered Mar 02 '22 at 09:09

you can create an extension function like below

 fun Double.toRate(): String? {
        val symbols = DecimalFormatSymbols(Locale.US)
        val decimalFormat = DecimalFormat("##.######", symbols)
        decimalFormat .minimumFractionDigits = 2
        return decimalFormat .format(this)
    }

Thanks

score 0 · Answer 5 · answered Sep 18 '18 at 09:28

Use simply this method to convert current localization wise number,

public static String currencyFormatter(String balance) {
    try {
        double amount = Double.parseDouble(balance);
        DecimalFormat decimalFormat = new DecimalFormat("##,##,##,###.##");
        DecimalFormat locationSpecificDF = null;
        if (android.os.Build.VERSION.SDK_INT >= android.os.Build.VERSION_CODES.LOLLIPOP) {
            locationSpecificDF = (DecimalFormat) DecimalFormat.getNumberInstance(Locale.forLanguageTag("bn")); // Ex. en, bn etc.
        } else {
            return decimalFormat.format(amount);
        }
        return locationSpecificDF.format(amount);
    } catch (Exception e) {
        return balance;
    }
}

or follow this link.

score 0 · Answer 6 · edited Nov 27 '18 at 11:58

0

if you want to use only NumberFormat, you can do this way:

unicoinsAmmount.setText(NumberFormat.getNumberInstance(Locale.US).format(vc));

edited Nov 27 '18 at 11:58

Bobulous

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answered Nov 27 '18 at 11:29

androidcodetowin

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score 0 · Answer 7 · answered Jan 19 '20 at 00:54

You can specify the number of fraction digit after the decimal point, and/or the numbers before the decimal point. Of-course, setting the current locale is also important.

   private String formatNumber(double number) {

    NumberFormat nf = NumberFormat.getNumberInstance(Locale.getDefault());
    if (nf instanceof DecimalFormat) {
        try {
            DecimalFormat formatter = (DecimalFormat) nf;
            formatter.setDecimalSeparatorAlwaysShown(true);
            formatter.setMinimumFractionDigits(2);
            formatter.setMaximumFractionDigits(2);
            return formatter.format(new BigDecimal(number);
        } catch (NumberFormatException nfe) {
            nfe.printStackTrace();
        }
    }
    return null;
}

Change DecimalFormat locale

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