How to use EditText TextWatcher in Fragment on Android In my application I want 2 fragments and for show this fragment I used navigation component. First fragment is Home and second fragment is Detail. I have one problem, in fragment Home I have EditText and want when write on EditText show a Toast! But when go from Home to Detail, and then back to Home call EditText automatically!!! My code : searchEdt.textChanges() .skipInitialValue() .debounce(500, TimeUnit.MILLISECONDS)...