如何向此活动添加项目单击？

Question

这是我的主要档案。 Departments.java

public class Departments extends Activity {

    private List<Departments_Item> facultati;
    private RecyclerView rv;

    @Override
    protected void onCreate(Bundle savedInstanceState) {
        super.onCreate(savedInstanceState);

        setContentView(R.layout.departments);

        rv=(RecyclerView)findViewById(R.id.rv);

        LinearLayoutManager llm = new LinearLayoutManager(this);
        rv.setLayoutManager(llm);
        rv.setHasFixedSize(true);

        initializeData();
        initializeAdapter();
    }

    private void initializeData(){
        facultati = new ArrayList<>();
        facultati.add(new Departments_Item("Trasnporturi", "Baieti destepti", R.drawable.faculate_1));
        facultati.add(new Departments_Item("Automatica si Claculatoare", "Hackeri", R.drawable.faculatate_2));
        facultati.add(new Departments_Item("IMST","Nu am habar", R.drawable.facultate_3));
        facultati.add(new Departments_Item("FAIMA", "Fete cool", R.drawable.facultate_4));
    }

    private void initializeAdapter(){
        DepartmentsAdapter adapter = new DepartmentsAdapter(facultati);
        rv.setAdapter(adapter);
    }

    }

我有一个Departments_Items.java

class Departments_Item {
        String facultate;
        String info1;
        int photoId;

        Departments_Item(String facultate, String info1, int photoId) {
            this.facultate = facultate;
            this.info1= info1;
            this.photoId = photoId;
        }
    }

我有DepartmentsAdapter.java

public class DepartmentsAdapter extends RecyclerView.Adapter<DepartmentsAdapter.PersonViewHolder> {

public static class PersonViewHolder extends RecyclerView.ViewHolder {

    CardView cv;
    TextView facultate;
    TextView info1;
    ImageView personPhoto;

    PersonViewHolder(View itemView) {
        super(itemView);
        cv = (CardView)itemView.findViewById(R.id.cv);
        facultate = (TextView)itemView.findViewById(R.id.facultate);
        info1 = (TextView)itemView.findViewById(R.id.facultate_info1);
        personPhoto = (ImageView)itemView.findViewById(R.id.facultate_photo);
    }
}

List<Departments_Item> facultati;

DepartmentsAdapter(List<Departments_Item> facultati){
    this.facultati = facultati;
}

@Override
public void onAttachedToRecyclerView(RecyclerView recyclerView) {
    super.onAttachedToRecyclerView(recyclerView);
}

@Override
public PersonViewHolder onCreateViewHolder(ViewGroup viewGroup, int i) {
    View v = LayoutInflater.from(viewGroup.getContext()).inflate(R.layout.departments_item, viewGroup, false);
    PersonViewHolder pvh = new PersonViewHolder(v);
    return pvh;
}

@Override
public void onBindViewHolder(PersonViewHolder personViewHolder, int i) {
    personViewHolder.facultate.setText(facultati.get(i).
    facultate);
    personViewHolder.info1.setText(facultati.get(i).info1);
    personViewHolder.personPhoto.setImageResource(facultati.get(i).photoId);
}

@Override
public int getItemCount() {
    return facultati.size();
}
}

如何使用onItemClick开启新活动，这是一个带有cardview的回收者视图，我只想点击卡片视图并打开一个活动。 我是Android Studio和Java的新手，如果你可以帮助我，我会帮助它。