Decimal point or decimal comma in Android

Or why not

DecimalFormatSymbols.getInstance().decimalSeparator

I did try this and it worked fine...

    String osVersion = System.getProperty("os.version");
String PhoneModel = android.os.Build.MODEL;
String locale = this.getResources().getConfiguration().locale.getDisplayCountry();
char decSeparator = '*';
DecimalFormatSymbols dfs = new DecimalFormatSymbols();
decSeparator = dfs.getDecimalSeparator();
String androidVersion = android.os.Build.VERSION.RELEASE;
String prologue = String.format("OS verson = %s PhoneModel = %s locale = %s DecimalFormatSymbol = [%c] androidVersion = %s ", 
        osVersion ,PhoneModel, locale, decSeparator,androidVersion);

EDIT: Updating based on @Algar's suggestion; you can directly use:

char separatorChar = DecimalFormatSymbols.getInstance().getDecimalSeparator();

As it will always return an instance of DecimalFormatSymbols.

---

NumberFormat nf = NumberFormat.getInstance();
if (nf instanceof DecimalFormat) {
    DecimalFormatSymbols sym = ((DecimalFormat) nf).getDecimalFormatSymbols();
    char decSeparator = sym.getDecimalSeparator();
}

Docs:

NumberFormat, DecimalFormat, DecimalFormatSymbols

According to the DecimalFormat docs, apparently calling NumberFormat.getInstance() is safe, but may return a subclass other than DecimalFormat (the other option I see is ChoiceFormat). I believe for the majority of instances it should be a DecimalFormat, and then you can compare decSeparator against a , and . to see which format it is using.

you can use:

Currency currency = Currency.getInstance(device_locale);

than use currency.getSymbol() for symbol. For default device locale you can use:

@TargetApi(Build.VERSION_CODES.N)
    public static Locale getCurrentLocale(Context c) {
        if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.N) {
            return c.getResources().getConfiguration().getLocales().get(0);
        } else {
            //noinspection deprecation
            return c.getResources().getConfiguration().locale;
        }
    }