Question

My idea is to set an error View to the EditText when the maximum character limit has been reached. Is there any callback about this event, or may be there’s another way to achieve this effect? Thanks in advance.

Answer 1

You can use the edit text’s setError:

editText.addTextChangedListener(new TextWatcher() {         
        @Override
        public void onTextChanged(CharSequence s, int start, int before, int count) {
        }

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

        @Override
        public void afterTextChanged(Editable s) {
            if(s.length() > max)
                editText.setError("Error");
        }
    });