Question

Is there any callback is invoked if an android textview is set with a text

Answer 1

add a TextWatcher to a TextView for watching text changes in TextView as:

TextView textView=(TextView)findViewById(R.id.txtview);
    textView.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) {

             //here you will get changed text in textview
        }
    });