how to get the events of searchview in android

The above answer is good but not complete actually you need to set an action listener for your Search view . you can do this in two ways create a class that implements the necessary classes to be an OnQueryTextListener and make a new object of that and use it as your search view query text listener or use the following compact form:

        SearchView searchView = (SearchView) menu.findItem(R.id.action_search).getActionView();
        searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {
                callSearch(query);
                return true;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
//              if (searchView.isExpanded() && TextUtils.isEmpty(newText)) {
                    callSearch(newText);
//              }
                return true;
            }

            public void callSearch(String query) {
                //Do searching
            }

        });

Try to use setOnQueryTextListener of SearchView

new SearchView.OnQueryTextListener() {
    @Override
    public boolean onQueryTextChange(String newText) {
        // your text view here
        textView.setText(newText);
        return true;
    }

    @Override
    public boolean onQueryTextSubmit(String query) {
        textView.setText(query);
        return true;
    }
}