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Questions tagged [android-textwatcher]

For questions related with TextWatcher callback interface

A special interface, that allows watching of the Editable field contents.

Has three callback methods:

  • void afterTextChanged (Editable s)
    This method is called to notify you that, somewhere within s, the text has been changed.
  • void beforeTextChanged (CharSequence s, int start, int count, int after)
    This method is called to notify you that, within s, the count characters beginning at start are about to be replaced by new text with length after. It is an error to attempt to make changes to s from this callback.
  • void onTextChanged (CharSequence s, int start, int before, int count)
    This method is called to notify you that, within s, the count characters beginning at start have just replaced old text that had length before. It is an error to attempt to make changes to s from this callback.

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205 questions
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How to compare current value with old value in TextWatcher?

I'm rendering the values from my database and placing those values in respective EditText field, so generally allowing the users to modify their save data. I have a SAVE button on my page, where by default disabled. It should be enabled only when…
irigs
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Dynamic TextWatcher ontextchange for edit text

I have designed and have it working Here in the above diagram when ever + button is clicked new set of text view and edit text comes if n times its clicked n times text view and edit text comes .I need to add all the value say as in the above…
Varun Kumar
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EditText allow only alphabets, digits of all languages

I have an EditText in which i want to allow only alphabets and numbers of any language. I tried with different android:inputType and android:digits in XML. I tried with set TextWatcher to edittext in which onTextChanged() is like @Override …
Srikanth
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How to get edit text values from a listview

I am not able to get edittext value from dynamic listview. When I am scrolling listview, entered values in edit text is going invisible Below is My Activity file - @Override protected void onCreate(Bundle savedInstanceState) { …
devendra
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onTextChanged(CharSequence s, int start, int before, int count) is called multiple times

I am implementing addTextChangedListener on an EditText. tagNameEditText.addTextChangedListener(new TextWatcher() { @Override public void beforeTextChanged(CharSequence s, int start, int count, int after) { …
Awadesh
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using setText() don't want to call textwatcher events?

i am using EditText. when i use setText(). TextWatcher Events are calling. i don't need to call it? can anyone help me? txt_qty.addTextChangedListener(new TextWatcher() { @Override public void…
bhautikmewada191
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Kotlin EditText Hexeditor in overwrite mode that skips spaces being buggy

Sorry for the big amount of code guys. Im at a loss lol. I needed a way in an EditText to overwrite chars, but skip the two spaces when the curser comes to them. So that spaces will be "Permanent" in a sense. This is for a basic hexadecimal editor…
WBarber
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Android-RecyclerView get text and set text in the same row

I am loading editText on click of fab button in recyclerview. I want to setText on TextView in the same row of recyclerview entered in editText. Currently the text is setting from 2nd textview and previous values from edittext are being set.…
Abm
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EditText append is duplicating numbers on SDK 31

NOTE: This seems to only be happening in Android 12 (SDK 31) I have a pretty complex use case for a TextWatcher in which I need to change text as the user types, however I may need to change more than just the character they just typed. For that…
lostintranslation
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(Android) Unable to show dot as thousand separator in edit text using a pattern

Here, I have to show currency decimal separator and thousands separators as per the given input like: private var decimalSeparator: Char = '.' private var thousandSeparator: String = "," fun setDecimalSeparator(decimalSeparator: Char)…
Kiran
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How to disable a button until editText entries are filled?

Following is my code for disabling and enabling the button depending upon editText entries. There are no errors here but, my app is keep on crashing. Can anyone please help me here..! editTextNumberDecimal2.addTextChangedListener (object :…
user15245010
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Is there any need to remove TextWatcher when dialog is dismissed in android?

I want to listen to TextView text changes in my dialog, So I am using TextWatcher like below: final View layout = activity.getLayoutInflater().inflate(R.layout.popup_history, container, false); final Dialog dialog =…
Chaitanya Karmarkar
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Android AutoCompleteTextView is overlapping while typing suggestion list

I am trying to implement HashTag and mention by using AutocompleteTextview. It is working fine. Depends on the entered keyword I am setting adapter in AutocompleteTextview. For that, I am using TextWatcher. It is showing the result. Till this…
Shyamaly Lakhadive
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Textwatcher for my EditText is firing afterTextChanged multiple times

I'm using EditText where I want to preset text or let user type something to it. I wanted to make it "all-caps" so I implemented capitalize function for my TextWatcher. You can enter and leave screen with this EditText and TextWatcher multiple times…
martin1337
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Format a number string into 2 decimal double independent of the number string length

In Android application developed using Kotlin, there have an EditText which accepts number only which is considered as USD. The input needs to be formatted into 2 decimals so that the input needs to be formatted as below 7 -> 0.07 73 -> …
Joseph
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