_searchView.setOnQueryTextListener(new SearchView.OnQueryTextListener() {
            @Override
            public boolean onQueryTextSubmit(String query) {

                _targetSearch = query.trim();
                onSearch(_targetSearch);

                return false;
            }

            @Override
            public boolean onQueryTextChange(String newText) {
                return false;
            }
        });

       _searchView.setOnCloseListener(new SearchView.OnCloseListener() {
            @Override
            public boolean onClose() {
              _targetSearch=null;
              onSearch(_targetSearch);
              return false;
            }
        });