if onQueryTextSubmit return false then only search action is performing , we can limit chars like this
@Override
public void onCreateOptionsMenu(Menu menu, MenuInflater inflater) {
super.onCreateOptionsMenu(menu, inflater);
inflater.inflate(R.menu.menu_home, menu);
// Get the SearchView and set the searchable configuration
SearchManager searchManager = (SearchManager)getActivity().getSystemService(Context.SEARCH_SERVICE);
SearchView searchView = (SearchView) menu.findItem(R.id.menu_search).getActionView();
// Assumes current activity is the searchable activity
searchView.setSearchableInfo(searchManager.getSearchableInfo(getActivity().getComponentName()));
//searchView.setIconifiedByDefault(false); // Do not iconify the widget; expand it by default
searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
@Override
public boolean onQueryTextSubmit(String query) {
return query.length()<4; //number of char to limit
}
@Override
public boolean onQueryTextChange(String newText) {
return false;
}
});
}