How to set input type and format in EditText using kotlin?

How to set input type and format in EditText using kotlin?

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How to set input type and format in EditText using kotlin?
Tag : android , By : Chris Tattum
Date : November 20 2020, 04:01 AM

this one helps. I want to force users to enter a Number and i'm using that (and it's working fine): , Here's how I like to do this:
add this for edit text
class InputFilterMinMax(min:Float, max:Float): InputFilter {
    private var min:Float = 0.0F
    private var max:Float = 0.0F

        this.min = min
        this.max = max

    override fun filter(source:CharSequence, start:Int, end:Int, dest: Spanned, dstart:Int, dend:Int): CharSequence? {
            val input = (dest.subSequence(0, dstart).toString() + source + dest.subSequence(dend, dest.length)).toFloat()
            if (isInRange(min, max, input))
                return null
        catch (nfe:NumberFormatException) {}
        return ""

    private fun isInRange(a:Float, b:Float, c:Float):Boolean {
        return if (b > a) c in a..b else c in b..a
myEditText.setFilters(arrayOf<InputFilter>(InputFilterMinMax(0.0F, 20.0F)))
public class InputFilterMinMax implements InputFilter {
    private float min;
    private float max;

    public InputFilterMinMax(float min, float max) {
        this.min = min;
        this.max = max;

    public CharSequence filter(CharSequence source, int start, int end, Spanned dest, int dstart, int dend) {
        //noinspection EmptyCatchBlock
        try {
            float input = Float.parseFloat(dest.subSequence(0, dstart).toString() + source + dest.subSequence(dend, dest.length()));
            if (isInRange(min, max, input))
                return null;
        } catch (NumberFormatException nfe) { }
        return "";

    private boolean isInRange(float a, float b, float c) {
        return b > a ? c >= a && c <= b : c >= b && c <= a;
myEditText.setFilters(new InputFilter[]{new InputFilterMinMax(0.0, 20.0)});

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Better way to Format Currency Input editText?

Tag : android , By : dummyadresse
Date : March 29 2020, 07:55 AM
this one helps. I tested your method, but it fails when I use great numbers... I created this:
private String current = "";
public void onTextChanged(CharSequence s, int start, int before, int count) {

       String cleanString = s.toString().replaceAll("[$,.]", "");

       double parsed = Double.parseDouble(cleanString);
       String formatted = NumberFormat.getCurrencyInstance().format((parsed/100));

       current = formatted;


EditText Input Format

Tag : chash , By : JoeCh
Date : March 29 2020, 07:55 AM
like below fixes the issue I would like to make a EditText field with format like this: 0000 AA. , This should do the trick:
EditText zipcode = FindViewById<EditText>(Resource.Id.zipcode);
zipcode.InputType = Android.Text.InputTypes.ClassNumber;
bool numberMode = true;
zipcode.TextChanged += (object sender, Android.Text.TextChangedEventArgs e) => {
    if(zipcode.Text.Length == 4){
            numberMode = false;
            zipcode.Text = zipcode.Text + " ";

    if(zipcode.Text.Length > 4){
        numberMode = false;
        zipcode.InputType = Android.Text.InputTypes.ClassText;

    if(zipcode.Text.Length <= 4){
        numberMode = true;
        zipcode.InputType = Android.Text.InputTypes.ClassNumber;

android: EditText input format

Tag : android , By : Alex Sadzawka
Date : March 29 2020, 07:55 AM
Hope that helps I can think of two ways of achieving it:
Use addTextChangedListener:
yourEditText.addTextChangedListener(new TextWatcher() {

          public void afterTextChanged(Editable s) {

            // Do your tricks here 


          public void beforeTextChanged(CharSequence s, int start, int count, int after) {}

          public void onTextChanged(CharSequence s, int start, int before, int count) {}

how can create specific input type on edittext? The input accettable is Roman numbers M D C X V I

Tag : java , By : Henry Fatino
Date : March 29 2020, 07:55 AM
it should still fix some issue You'll want to implement an InputFilter to restrict the input to the acceptable characters and assign that to the EditText. In first iteration, this is really simple. Take a look at the source code of LoginFilter.UsernameFilterGeneric for an example. You'll have this set up in minutes.
If that's all you need, great, stop there! Unfortunately, this may be all you need. There are some grammatical rules to roman numerals, for instance XXCI is (100-20)+1=81, but IXXC is not 100-(20-1)=81. If you want to cover that, then InputFilter is too crude. You'll still use the InputFilter to make the initial filtering, but you'll have to implement TextWatcher on top of that to handle the advanced input validation. The PhoneNumberFormattingTextWatcher (source) gives you some clues on how to do that. It's an awful lot more work than just the InputFilter, because you'll have to deal with all sorts of weird multi-character inputs, such as clipboard paste-to-replace-selection.

Parsing user input in edittext field of the type date and check for correct date format

Tag : java , By : Ronnie Carlin
Date : March 29 2020, 07:55 AM
wish of those help
I just want to check that the users does not enter more than 6 digits and that these digits have the right format.
if (inputSTR.matches("\\d{2}-\\d{2}-\\d{2}")) {
    // input matches to required pattern
} else {
    // Show error msg
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