Stack Overflow
Stack Overflow

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.

Useful links

205 questions
-2
votes
1 answer

On setting Edit Text box text with respect to change in another Edit text and Vice versa in real time changing

I have two entry boxes(Edit Text Box) In android layout, I am trying to set one edit text box's text to another Edit text box's text by calculating some value and Vice versa(getting text from second text box then calculate and add it to first text…
Rupesh Kumar
  • 23
  • 7
-2
votes
2 answers

How to use text watcher to do match between 3 EditText?

I code like this in below. But it doesn't work. I need to perform simple addition and simple subtraction based on which two of those field have input.... Question ends... I needed to make this text because I can't ask the question if details isn't…
jde
  • 9
-2
votes
1 answer

Calculation with textWatcher android

In my project I have 7 EditText field. User will only need to fill their own value in first two EditText. I need a series calculation like this... (after user input) subtract ed1-ed2 the result automatically show in ed3 field. multiply ed3*2 =…
Parimal Debbarma
  • 23
  • 2
-2
votes
1 answer

Android new class TextWatcher cannot tran value from mainActivity

I have the problem on android app development, I have a class to TextWatcher. but the textWatcher cannot use the method of getSelectionStart(), getSelectionEnd(), length(), findViewById(mInputLayout), setText(s) and setSelection(tempSelection). and…
user1902899
  • 133
  • 1
  • 1
  • 7
-2
votes
1 answer

Click on char on EditText

I have editText view with same text. On my way user can touch on char in editText. How I can detect on what char user create touch event?
Nikolay
  • 344
  • 1
  • 15
-2
votes
3 answers

Null pointer exception before TextChanged in android

It's giving me null pointer exception i have initialized added textwatcher but still i am having this exception. Am I forgetting some thing. Any Help is Appreciated. EditText editText = (EditText)…
Asad AndyDev
  • 481
  • 5
  • 23
-2
votes
1 answer

Get filtered results from ArrayAdapter

How can I get a new ArrayList of results after filtering an ArrayAdapter using a TextWatcher in android? The following is my code for filtering an ArrayAdapter using the text from an EditText variable named edtSearch. The…
Mehedi Hasan Chonchol
  • 75
  • 1
  • 2
  • 10
-3
votes
1 answer

java.lang.StackOverflowError: stack size 8MB: Aftertextchanged

I have multiple edit texts in activity and using textwatcher to take/observe user input. Using methods for each editexts for writing functionality. sometimes i had to use same method for multiple edittexts where it is causing the …
john Doe
  • 19
  • 5
-3
votes
1 answer

How to use Text Watcher for multiple edit text in android?

I have a situation where there will be two EditText controls, one for entering Rate Before Tax value and another one for entering Rate After Tax. I will be changing both Rate BT and Rate AT values. When I change Rate BT, then Rate AT text should…
Sachin
  • 111
  • 1
  • 8
-3
votes
4 answers

Lag after setting text in OnTextChanged()

Below is an example that replicates my lagging problem. Once I set the text on the EditTextView it takes at least 1.5 seconds for the user to be allowed to input another character. amountEditText.addTextChangedListener(new TextWatcher() { …
scottazord
  • 178
  • 2
  • 16
1 2 3
…
13
14