I'm trying to get what modification user has made to EditText, either insert or delete. I use TextWatcher but I don't get right result, moreover sometimes "getChar(start, end) has end before start" error.
editText = (EditText) findViewById(R.id.MyEditText);
editText.addTextChangedListener(new TextWatcher() {
@override
public void afterTextChanged(Editable s){}
@override
public void beforeTextChanged(CharSequence s, int start, int count, int after){
showToast("text removed: " + s.subSequence(start, count));
}
@override
public void onTextChanged(CharSequence s, int start, int before, int count){
showToast("text added: " + s.subSequence(start, count));
}
}
As you can see I use beforeTextChanged
to get any text that's removed by user, and onTextChanged
for insertion. Please shed some light here. Thanks!
API is right here: http://developer.android.com/reference/android/text/TextWatcher.html#afterTextChanged(android.text.Editable)
EDIT:
I seem to figure it out...it's quite silly: s.subSequence(start, count))
should really be s.subSequence(start, start+count))
Try this, I'm not sure whether you want the remaining word(after insert/update) or the letter(added/removed).
}