recyclerview checkbox notification

My app has a recycler view with a checkbox. I want a notification to show up when box is checked. And save state is appreciated. I've written part of the things I want. But I need your help to get the thing done.

Here's my adapter

public class settingsadapter extends RecyclerView.Adapter<settingsadapter.MyViewHolder> {

private List<settingsitem> settingsitemList;//Well some basic adapter stuff


public settingsadapter(List<settingsitem> settingsitemList) {
    this.settingsitemList = settingsitemList;//cause most tutorial online didnt work for me
}

@Override
public MyViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View itemView = LayoutInflater.from(parent.getContext())
            .inflate(R.layout.settingsrow, parent, false);//and make this activity crash


    return new MyViewHolder(itemView);//this recyclerview has only 1 item
}

@Override
public void onBindViewHolder(MyViewHolder holder, int position) {
    final int pos = position;//so just 1 checkbox
    settingsitem settingsitem = settingsitemList.get(position);
    holder.title.setText(settingsitem.getTitle());
    holder.emoticons.setText(settingsitem.getEmoticons());//check and comes the notification

}

@Override
public int getItemCount() {

    return settingsitemList.size();// save state for the checkbox is needed too
}

public class MyViewHolder extends RecyclerView.ViewHolder {
    public TextView title, emoticons;
    public CheckBox cb1;//I don't know why those tutorial didn't work most of the time

    private final Context context;//I never really learned java

    public MyViewHolder(View view) {
        super(view);//so i have to seek help here
        context = itemView.getContext();//really hope you guys can help me
        title = (TextView) view.findViewById(R.id.title);
        emoticons = (TextView) view.findViewById(R.id.emoticons);
        cb1 = (CheckBox) view.findViewById(R.id.notificationchk);

    }
    }//end of adapter
}

activity java

public class Settings extends AppCompatActivity {
private List<settingsitem> settingsitemList = new ArrayList<>();
private RecyclerView recyclerView;//and now the activity java
private settingsadapter mAdapter;
CheckBox cb1;
NotificationManager manager;//some basic recycler stuff 

@Override
protected void onCreate(Bundle savedInstanceState) {
    super.onCreate(savedInstanceState);// nothing much here
    setContentView(R.layout.activity_settings);
    recyclerView = (RecyclerView) findViewById(R.id.settings);
    mAdapter = new settingsadapter(settingsitemList);
    RecyclerView.LayoutManager mLayoutManager = new LinearLayoutManager(getApplicationContext());
    recyclerView.setLayoutManager(mLayoutManager);// I am a newbie
    recyclerView.setItemAnimator(new DefaultItemAnimator());
    recyclerView.addItemDecoration(new DividerItemDecoration(this, LinearLayoutManager.VERTICAL));
    recyclerView.setAdapter(mAdapter);// there's so much I dont understand

    preparesettingsitemData();//hope you understand
}


private void preparesettingsitemData() {
    settingsitem settingsitem = new settingsitem(getString(R.string.notification), getString(R.string.notificationexplain), Settings.class);
    settingsitemList.add(settingsitem);//Helps are appreciated
    mAdapter.notifyDataSetChanged();//Thanks a lot for your help
}//end of main java

}