CODEWITHSUNDEEP
javaandroidstringformat
user1082964
user1082964

Reputation: 915

How can I format a String number to have commas in android Edit Field

For what function I can use in android to display the number into different formats.

For eg: If I enter 1000 then it should display like this 1,000. If I enter 10000 then it should display like this 10,000. If I enter 1000000 then it should display like this 1,000,000.

Please guide me.

Upvotes: 91

Views: 96347

Answers (10)

Samuel Robert
Samuel Robert

Reputation: 11032

Recommended and preferred way is to do it with the strings.xml file

<string name="format_denominated">%,d</string>

from your Kotlin/Java code

getResources().getString(R.string.format_denominated, value)

Even better with databinding

<TextView
    android:text="@{@string/format_denominated(value)}"
    ............/>

Upvotes: 1

Emre Hamurcu
Emre Hamurcu

Reputation: 111

I wrote this Kotlin extension function may can help.

fun String.formatPoint(): String {
    val sb = StringBuilder()
    this.reversed().forEachIndexed { index, c ->
        // 123,123,123
        if ((index + 1) % 3 == 0) {
            if (index != this.length - 1) {
                sb.append("$c,")
            } else {
                sb.append(c)
            }
        } else {
            sb.append(c)
        }
    }

    return sb.toString().reversed()
}

Upvotes: 0

Atiar Talukdar
Atiar Talukdar

Reputation: 746

public static String formatNumber(int number){
    return NumberFormat.getNumberInstance(Locale.getDefault()).format(number);
}
public static String formatNumber(String number){
    return NumberFormat.getNumberInstance(Locale.getDefault()).format(Integer.parseInt(number));
}

Upvotes: 1

the-ginger-geek
the-ginger-geek

Reputation: 7081

You could use DecimalFormat and just format the number

DecimalFormat formatter = new DecimalFormat("#,###,###");
String yourFormattedString = formatter.format(100000);

The result will be

  • 1,000,000 for 1000000
  • 10,000 for 10000
  • 1,000 for 1000

Update 12/02/2019

This String.format("%,d", number) would be a better(less hardcoded) solution as indicated in the comments below by @DreaminginCode so I thought I would add it here as an alternative

Upvotes: 182

Kush
Kush

Reputation: 1092

Add this function in common class

  public static String getFormatedNumber(String number){
        if(!number.isEmpty()) {
            double val = Double.parseDouble(number);
            return NumberFormat.getNumberInstance(Locale.US).format(val);
        }else{
            return "0";
        }
    }

And use that function every where like this:

String newNumber = Utils.getFormatedNumber("10000000");

Upvotes: 4

Nail Shaykhraziev
Nail Shaykhraziev

Reputation: 452

You can use Numberformat

public static double getNumberByString(String s) throws ParseException {
    return NumberFormat.getInstance(Locale.getDefault()).parse(s).doubleValue();
}

Upvotes: 3

Codeversed
Codeversed

Reputation: 9473

int[] numbersToFormat = new int[]
  { 1, 10, 100, 10000, 100000, 1000000, 10000000, 100000000, 1000000000 };


for (int number : numbersToFormat) {
  System.out.println(  
    NumberFormat.getNumberInstance(Locale.getDefault()).format(number));
}

OUTPUT

1
10
100
10,000
100,000
1,000,000
10,000,000
100,000,000
1,000,000,000

Upvotes: 9

YLS
YLS

Reputation: 1565

private String getFormatedAmount(int amount){
  return NumberFormat.getNumberInstance(Locale.US).format(amount);
}

Upvotes: 16

Eldhose M Babu
Eldhose M Babu

Reputation: 14510

Add a text change listener as below (Also make sure that the input type selected for Edittext is Number) : 

etTest.addTextChangedListener(new TextWatcher() {

        boolean isManualChange = false;

        @Override
        public void onTextChanged(CharSequence s, int start, int before,
                int count) {
            if (isManualChange) {
                isManualChange = false;
                return;
            }

            try {
                String value = s.toString().replace(",", "");
                String reverseValue = new StringBuilder(value).reverse()
                        .toString();
                StringBuilder finalValue = new StringBuilder();
                for (int i = 1; i <= reverseValue.length(); i++) {
                    char val = reverseValue.charAt(i - 1);
                    finalValue.append(val);
                    if (i % 3 == 0 && i != reverseValue.length() && i > 0) {
                        finalValue.append(",");
                    }
                }
                isManualChange = true;
                etTest.setText(finalValue.reverse());
                etTest.setSelection(finalValue.length());
            } catch (Exception e) {
                // Do nothing since not a number
            }
        }

        @Override
        public void beforeTextChanged(CharSequence s, int start, int count,
                int after) {
            // TODO Auto-generated method stub

        }

        @Override
        public void afterTextChanged(Editable s) {
            // TODO Auto-generated method stub

        }
    });

Upvotes: 2

Sandeep
Sandeep

Reputation: 2593

try this one hope it will help.

 System.out.println(NumberFormat.getNumberInstance(Locale.US).format(1000));

Upvotes: 52

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