search delay

Timer? _debounce;

_onSearchChanged(String query) {
  if (_debounce?.isActive ?? false) _debounce?.cancel();
  _debounce = Timer(const Duration(milliseconds: 500), () {
    print('coba $query');
    BlocProvider.of<TransactionBloc>(context)
        .add(TransactionCustomerFetchEvent(phone: query));
  });
}


//cara pakai 

........
 onChanged: (val){
        _onSearchChanged(val);
      },
.......