CODEWITHSUNDEEP
javaandroidlocalizationnumber-formatting
TimSim
TimSim

Reputation: 4036

java.lang.NumberFormatException: Invalid float: "٠"

So I'm getting a crash java.lang.NumberFormatException: Invalid float: "٠" because for some reason on Egyptian devices the decimal delimiter is ٠ instead of . How do I solve this? It can handle users who have , (comma) as the decimal symbol, but this weird dot causes a crash. Here's the code that's the problem:

DecimalFormat oneDigit = new DecimalFormat("#.#");
DecimalFormatSymbols dfs = new DecimalFormatSymbols();
dfs.setDecimalSeparator('.');
oneDigit.setDecimalFormatSymbols(dfs);
sevenDaysAverage = Float.valueOf(oneDigit.format(sevenDaysAverage));  // exception here

My goal is to have a number formatted with a single decimal delimited by a dot, because the app is in English and that's how the number should be displayed.

Upvotes: 2

Views: 7211

Answers (4)

Forntoh
Forntoh

Reputation: 311

If you want the grouping separator to be a point, you can use an european locale:

    NumberFormat nf = NumberFormat.getNumberInstance(Locale.GERMAN);
    DecimalFormat df = (DecimalFormat)nf;

Alternatively you can use the DecimalFormatSymbols class to change the symbols that appear in the formatted numbers produced by the format method. These symbols include the decimal separator, the grouping separator, the minus sign, and the percent sign, among others:

    DecimalFormatSymbols otherSymbols = new DecimalFormatSymbols(currentLocale);
    otherSymbols.setDecimalSeparator(',');
    otherSymbols.setGroupingSeparator('.'); 
    DecimalFormat df = new DecimalFormat(formatString, otherSymbols);

Upvotes: 0

aya salama
aya salama

Reputation: 972

That's an Arabic Zero not a decimal point,

Upvotes: 1

Uncaught Exception
Uncaught Exception

Reputation: 2179

You ought to use NumberFormat class.It allows you to parse Strings into a locale aware number. This would prevent you from facing situations where the decimal separator character is , For example in case of German, it would be:

NumberFormat nf_ge = NumberFormat.getInstance(Locale.GERMAN);

String number_ge = nf_ge.format(1000000);

Upvotes: 0

atish shimpi
atish shimpi

Reputation: 5023

String f = "20.0"; // suppose . is weird symbol  
String f1 = f.replace(".","."); // replace weird dot with decimal point

Then convert f1 to String.

sevenDaysAverage = Float.valueOf(f1);

Upvotes: 4

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