replace character inside TextWatcher in android

java android textwatcher
Fcoder picture Fcoder · Mar 27, 2013 · Viewed 10.1k times · Source

i use a TextWatcher to change pressed key value. my goal is that replace some characters while typing. for example when i type keys, if reached "S" character, replaces it with "a" character. my question is: should i do it in beforeTextChanged?? how? can anyone give me an example?

Answer

quantum apps picture quantum apps · Apr 26, 2016

I know that this post is a couple of years old, but both versions did not work for me and have build a hybrid between the two answers.

@Override
public void afterTextChanged(Editable editable) {    
    if (editable.toString().contains(",")) {
       Editable ab = new SpannableStringBuilder(editable.toString().replace(",", ""));
       editable.replace(0, editable.length(), ab);
    }
}

Related questions

How to update the same EditText using TextWatcher?

In my Android application I need to implement a TextWatcher interface to implement onTextChanged. The problem I have is, I want to update the same EditText With some extra string. When I try to do this the program terminates. final …

Read More
EditText validation with TextWatcher

I have a Dialog with a EditText and a button. This EditText will name the database table I will create so its of the utmost importance it is validated. So i would like to pose 2 questions: 1) This is quite simple, …

Read More
How to format the input of EditText when typing with thousands separators (,) in Android?

I've an edittext , it only gets numeric without decimal numbers. android:inputType="number" I want to separate thousands while I'm typing . For example 25,000 . I know I should use TextWatcher and I've used this code but I couldn't make it work : @…

Read More