Android refreshing adapter work after rotation again device

This code works fine when i add some data into 'List model' and restore saved data on rotation device, unfortunately after restore data and set that to `model` within `onRestoreInstanceState` method, after adding other data to that, adapter could not refresh with new added data, data source in adapter after can be updated, but adapter can;t know them , I'm using `MVVM` data model binding and search more time about this problem i can't resolve that. Rhat have a simple tip which after rotation again device, my adapter can be refresh with all added data which adapter don't refresh with them. ``` public class ActivityRegister extends BaseActivities{ private List<RobotViewModel> model = new ArrayList<>(); ... @Override public void onCreate(@Nullable Bundle savedInstanceState) { super.onCreate(savedInstanceState); ... } @Override protected void onSaveInstanceState(Bundle outState) { outState.putParcelable("model", Parcels.wrap(model)); super.onSaveInstanceState(outState); } @Override protected void onRestoreInstanceState(Bundle outState) { model = Parcels.unwrap(outState.getParcelable("model")); adapter.setData(model); adapter.notifyItemInserted(model.size() - 1); binding.registerRobot.scrollToPosition(adapter.getItemCount() - 1); } ``` add to `model` method: ``` @Override public void clickOnSendCommandToRobot() { RobotViewModel temp = new RobotViewModel(); temp.setMessage("message"); temp.setCommand(true); model.add(temp); adapter.notifyItemInserted(model.size() - 1); binding.registerRobot.scrollToPosition(adapter.getItemCount() - 1); } ``` My Adapter Class: ``` public class RobotMessagesAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> { private List<RobotViewModel> list; private LayoutInflater inflater; public RobotMessagesAdapter(List<RobotViewModel> robotViewModels) { this.list = robotViewModels; } @Override public RecyclerView.ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { if (inflater == null) { inflater = LayoutInflater.from(parent.getContext()); } if (viewType == SV.RobotMessageType.SENT_BY_USER.ordinal()) { return new UserViewHolder(UserMessagesDataBinding.inflate(inflater, parent, false)); } else { return new RobotViewHolder(RobotDataBinding.inflate(inflater, parent, false)); } } @Override public void onBindViewHolder(RecyclerView.ViewHolder holder, int position) { switch (getItemViewType(position)) { case 0: ((UserViewHolder) holder).bind(list.get(position)); break; case 1: ((RobotViewHolder) holder).bind(list.get(position)); break; } } ... public void setData(List<RobotViewModel> data) { Log.e("data size ", data.size() + ""); list.clear(); list.addAll(data); } } ``` I'm wondering why this code work fine: ``` @Override protected void onRestoreInstanceState(Bundle outState) { model = Parcels.unwrap(outState.getParcelable("model")); adapter.setData(model); adapter.notifyItemInserted(model.size() - 1); binding.registerRobot.scrollToPosition(adapter.getItemCount() - 1); RobotViewModel temp = new RobotViewModel(); temp.setMessage("message"); temp.setCommand(true); model.add(temp); adapter.notifyItemInserted(model.size() - 1); binding.registerRobot.scrollToPosition(adapter.getItemCount() - 1); } ``` without any problem and after move this lines: ``` RobotViewModel temp = new RobotViewModel(); temp.setMessage("message"); temp.setCommand(true); model.add(temp); adapter.notifyItemInserted(model.size() - 1); binding.registerRobot.scrollToPosition(adapter.getItemCount() - 1); ``` to other method that doesn't work :| My presenter: ``` public class ActivityRegisterPresenter { private ActivityRegisterContract view; public ActivityRegisterPresenter(ActivityRegisterContract mView) { view = mView; } ... } ``` and my ViewModel: ``` public class ActivityRegisterViewModel extends BaseObservable { private String readContactPermission; private String getMessages; public ActivityRegisterViewModel() { } @Bindable public String getReadContactPermission() { return readContactPermission; } public void setReadContactPermission(String readContactPermission) { this.readContactPermission = readContactPermission; notifyChange(); } public String getGetMessages() { return getMessages; } public void setGetMessages(String getMessages) { this.getMessages = getMessages; } } ``` SOURCE CODE IS HERE problems are in `clickOnRegisterMobileNumber` and `clickOnSendCommandToRobot` methods