CODEWITHSUNDEEP
javaandroidformatdouble
Den
Den

Reputation: 1352

android - Format Double and put it in TextView without comma (if needed)

I get the "price" value from the server in Double and I need to put it in TextView in my application. The problem is: when price = 500 I get 500.0 because it's Double. I want it to look like 500.55 or 500.50 or just 500 - how do I format these numbers in the right way?

Upvotes: 1

Views: 1413

Answers (4)

Pantsoffski
Pantsoffski

Reputation: 111

Use DecimalFormat

double price = 500.0;
DecimalFormat format = new DecimalFormat("0.###");
System.out.println(format.format(price));

EDIT

Ok, than try something different:

public static String formatPrice ( double price){
    if (price == (long) price)
        return String.format("%d", (long) price);
    else
        return String.format("%s", price);
}

Upvotes: 2

Pavneet_Singh
Pavneet_Singh

Reputation: 37404

you can use rexgex to do the formatting

1.) Create a function to identify the following conditions

  • If precision values contains only zeros then truncate them

  • If there is any non-zero value after decimal then return original value

    public String formatValue(double d){
    String dStr = String.valueOf(d);
    String value = dStr.matches("\\d+\\.\\d*[1-9]\\d*") ? dStr : dStr.substring(0,dStr.indexOf("."));       
    return value;
}

\\d+\\.\\d*[1-9]\\d* : match one or more digits then a .

  • \\d*[1-9]\\d* : match one non-zero value

Test cases

    yourTextView.setText(formatValue(500.00000000)); // 500
    yourTextView.setText(formatValue(500.0001));       // 500.0001
    yourTextView.setText(formatValue(500));          // 500
    yourTextView.setText(formatValue(500.1111));     // 500.1111

Learn more about regular expressions

Upvotes: 3

ZaidBinAsif
ZaidBinAsif

Reputation: 1

You need to explicitly get the int value using method intValue() like this:

Double d = 5.25; Integer i = d.intValue();

OR double d = 5.25; int i = (int) d;

Upvotes: -1

Luftbaum
Luftbaum

Reputation: 323

Use the String#format method.

Read about it here: https://www.dotnetperls.com/format-java or in the JavaDoc

Upvotes: 0

Related Questions