SKCommon.java

package com.samknows.libcore;

import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.text.ParseException;
import java.util.Locale;

public class SKCommon {

  public static String getVersion() {
    return "1.0";
  }

  //public static String sConvertDigits(String value)
  //{
  //    String newValue =  value.replaceAll("١", "1").replaceAll("٢", "2").replaceAll("٣", "3").replaceAll("٤", "4").replaceAll("٥", "5").replaceAll("٦", "6").replaceAll("٧", "7").replaceAll("٨", "8").replaceAll("٩", "9").replaceAll("٠", "0");
  //    return newValue;
  //}

  public static String sGetDecimalStringAnyLocaleAs1Pt5LocalisedString(String value) {

    Locale theLocale = Locale.getDefault();

    NumberFormat numberFormat = DecimalFormat.getInstance(theLocale);
    Number theNumber;
    try {
      theNumber = numberFormat.parse(value);
    } catch (ParseException e) {

      //value = sConvertDigits(value);
      String valueWithDot = value.replaceAll(",", ".");

      theNumber = Double.valueOf(valueWithDot);
    }

    // String.format uses the JVM's default locale.
    //String s = String.format(Locale.US, "%.2f", price);
    NumberFormat outputFormat = DecimalFormat.getInstance(theLocale);
    outputFormat.setMinimumIntegerDigits(1);
    outputFormat.setMinimumFractionDigits(5);
    outputFormat.setMaximumFractionDigits(5);
    String theStringResult = outputFormat.format(theNumber);
    //String theStringResult = String.format("%1.5f", theDoubleValue.doubleValue());

    return theStringResult;
  }


  public static String sGetDecimalStringUSLocaleAs1Pt5LocalisedString(String value) {

    Locale theLocale = Locale.ENGLISH;

    NumberFormat numberFormat = DecimalFormat.getInstance(theLocale);
    Number theNumber;
    try {
      theNumber = numberFormat.parse(value);
    } catch (ParseException e) {
      SKPorting.sAssert(SKCommon.class, false);
      return value;
    }

    // String.format uses the JVM's default locale.
    //String s = String.format(Locale.US, "%.2f", price);
    NumberFormat outputFormat = DecimalFormat.getNumberInstance();
    outputFormat.setMinimumIntegerDigits(1);
    outputFormat.setMinimumFractionDigits(5);
    outputFormat.setMaximumFractionDigits(5);
    String theStringResult = outputFormat.format(theNumber);
    //String theStringResult = String.format("%1.5f", theDoubleValue.doubleValue());

    return theStringResult;
  }


  public static double sGetDecimalStringAnyLocaleAsDouble(String value) {

    if (value == null) {
      SKPorting.sAssert(SKCommon.class, false);
      return 0.0;
    }

    Locale theLocale = Locale.getDefault();
    NumberFormat numberFormat = DecimalFormat.getInstance(theLocale);
    Number theNumber;
    try {
      theNumber = numberFormat.parse(value);
      return theNumber.doubleValue();
    } catch (ParseException e) {
      // The string value might be either 99.99 or 99,99, depending on Locale.
      // We can deal with this safely, by forcing to be a point for the decimal separator, and then using Double.valueOf ...
      //http://stackoverflow.com/questions/4323599/best-way-to-parsedouble-with-comma-as-decimal-separator
      String valueWithDot = value.replaceAll(",", ".");

      try {
        return Double.valueOf(valueWithDot);
      } catch (NumberFormatException e2) {
        // This happens if we're trying (say) to parse a string "Failed" as though it were a number!
        // If this happens, it should only be due to application logic problems.
        // In this case, the safest thing to do is return 0, having first fired-off a debug-time warning.
        //SKPorting.sAssert(SKCommon.class,  false);
        SKPorting.sLogD("SKCommon", "Warning: Value is not a number" + value);
        return 0.0;
      }
    }
  }
}