Limit Decimal Places in Android EditText

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I'm trying to write an app that helps you manage your finances. I'm using an EditText Field where the user can specify an amount of money.

I set the inputType to numberDecimal which works fine, except that this allows people to enter numbers such as 123.122 which is not perfect for money.

Is there a way to limit the number of characters after the decimal point to two?

@Override
public void beforeTextChanged(CharSequence s, int start, int count, int after) {
    String numero = total.getText().toString();
    int dec = numero.indexOf(".");
    int longitud = numero.length();
    if (dec+3 == longitud && dec != -1) { //3 number decimal + 1
        log.i("ento","si");
        numero = numero.substring(0,dec+3);
        if (contador == 0) {
            contador = 1;
            total.setText(numero);
            total.setSelection(numero.length());
        } else {
            contador = 0;
        }
    }
}

How to limit EditText length to 7 integers and 2 decimal places , If you don't want to limit digits before or after dot just put Integer. placed yet if ( temp.length() > beforeDecimal) { return ""; } } else { int dotPosition ; int cursorPositon = edittext. You can enhance it when using Android databinding like this:. 34. Here is a sample InputFilter which only allows max 4 digits before the decimal point and max 1 digit after that. Values that edittext allows: 555.2, 555, .2. Values that edittext blocks: 55555.2, 055.2, 555.42. InputFilter filter = new InputFilter() { final int maxDigitsBeforeDecimalPoint=4; final int maxDigitsAfterDecimalPoint=1; @Override public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) { StringBuilder builder = new

This code works well,

public class DecimalDigitsInputFilter implements InputFilter {

    private final int digitsBeforeZero;
    private final int digitsAfterZero;
    private Pattern mPattern;

    public DecimalDigitsInputFilter(int digitsBeforeZero, int digitsAfterZero) {
        this.digitsBeforeZero = digitsBeforeZero;
        this.digitsAfterZero = digitsAfterZero;
        applyPattern(digitsBeforeZero, digitsAfterZero);
    }

    private void applyPattern(int digitsBeforeZero, int digitsAfterZero) {
        mPattern = Pattern.compile("[0-9]{0," + (digitsBeforeZero - 1) + "}+((\\.[0-9]{0," + (digitsAfterZero - 1) + "})?)|(\\.)?");
    }

    @Override
    public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
        if (dest.toString().contains(".") || source.toString().contains("."))
            applyPattern(digitsBeforeZero + 2, digitsAfterZero);
        else
            applyPattern(digitsBeforeZero, digitsAfterZero);

        Matcher matcher = mPattern.matcher(dest);
        if (!matcher.matches())
            return "";
        return null;
    }

}

applying filter:

edittext.setFilters(new InputFilter[] {new DecimalDigitsInputFilter(5,2)});

How to limit Decimal Places in Android EditText?, This example demonstrates about How to limit Decimal Places in Android EditText.Step 1 − Create a new project in Android Studio, go to File� Kotlin solution using extension for EditText: Create the following EditText decimal limiter function, which contains a TextWatcher which will look for text changes, such as checking the number of decimal digits & if the user enters only '.' symbol then it will prefix with 0.

Like others said, I added this class in my project and set the filter to the EditText Simpler solution without using regex:

public class DecimalDigitsInputFilter implements InputFilter {
int digitsBeforeZero =0;
int digitsAfterZero=0;

public DecimalDigitsInputFilter(int digitsBeforeZero,int digitsAfterZero) {
this.digitsBeforeZero=digitsBeforeZero;
this.digitsAfterZero=digitsAfterZero;
}

@Override
public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
if(dest!=null && dest.toString().trim().length()<(digitsBeforeZero+digitsAfterZero)){
    String value=dest.toString().trim();
    if(value.contains(".") && (value.substring(value.indexOf(".")).length()<(digitsAfterZero+1))){
        return ((value.indexOf(".")+1+digitsAfterZero)>dstart)?null:"";
    }else if(value.contains(".") && (value.indexOf(".")<dstart)){
        return "";
    }else if(source!=null && source.equals(".")&& ((value.length()-dstart)>=(digitsAfterZero+1))){
        return "";
    }

}else{
    return "";
}
    return null;
}

}

applying filter:

edittext.setFilters(new InputFilter[] {new DecimalDigitsInputFilter(5,2)});

java Limit Decimal Places in Android EditText?, java Limit Decimal Places in Android EditText? Add the Listener in your onCreate . If you want modify the number of digits before and after the point edit the call� After entering seven digits,it should not allow to add one more digit but i may allow upto 2 decimal places. I use a decimal filter for 2 decimal places and this code in XML. android:maxLength="7" android:imeOptions="actionDone" android:inputType="numberDecimal". But EditText is allowing to enter 8 digits.

My simple solution without regex

    int start=Edit1.getSelectionStart();
    String sp=Edit1.getText().toString();
    sp=sp.replace(",",".");
    Double d=Double.valueOf(sp);
    String s=String.format("%.2f",d );
    if(!Edit1.getText().toString().equals(s))
        Edit1.setText(s);
    if(start>Edit1.getText().length())start--;
    Edit1.setSelection(start);

putting into onTextChange. By deleting the comma, the zeros double because the number becomes an integer.

Configure android EditText to allow decimals and negatives, java Limit Decimal Places in Android EditText?, More elegant way would be using a regular expression ( regex ) as follows: public class DecimalDigitsInputFilter� i want to show only two decimal places in my edit text, ofc i wanna show currency in edit text but limiting its value to 2 digits after decimal. I have seen some solutions using regular expression but i don't wanna do that. I HAVE been told that java support some internal library functions that can do that.

For Kotlin

val inputFilter =  arrayOf<InputFilter>(DecimalDigitsInputFilter(5,2))
            et_total_value.setFilters(inputFilter)

[Android] EditText setting can only input 2 decimal places , We can control the input of the keyboard by another way to control the input of decimals and . Through EditText setKeyListener Method to filter the input characters� To use this, call setKeyListener () on the EditText, e.g. // Don't allow for signed input (minus), but allow for decimal points editText.setKeyListener( new MyDigitsKeyListener( false, true ) ); However, you still have to use Martin's trick in the TextChangedListener where you replace commas with periods.

Android EditText limits the number of decimal places, Android EditText limits the number of decimal places, Programmer Sought, the best programmer technical posts sharing site. Android - Round to 2 decimal places [duplicate] Ask Question Asked 8 years, 5 months ago. Active 4 years, 4 months ago. How to limit decimal digits - Android. 1.

Android edittext two decimal places, android decimalformat 2 decimal places android edittext decimal format android edittext input type number decimal android-edittext limit number range android� This example demonstrate about How to limit text length of EditText in Android. Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.

How to limit EditText length to 7 integers and 2 decimal places?, android edittext limit decimals edittext decimal android android round double to 2 decimal places android-edittext max length math round java 2 decimal place EditText: restrict edittext to enter 2 digits after decimal point.

Comments
  • You could write a regular expression and verify the content of the edit text when it looses focus.
  • I found the InputFilter interface, it seems to do what i want developer.android.com/reference/android/text/method/…, but the method filter that I have to implement is rather confusing to me. Did somebody write such a Filter already and knows how to use it?
  • Do any of the suggested solutions work for RTL locales? As far as I can tell they will not...
  • First, don't use magic numbers, use the human readable symbolic constants instead. Second, setInputType(3) is for a phone number. There is no InputType for fixed precision decimal numbers, unfortunately.