Start new Activity with onClick() in RecyclerView

Question

I want to go into a new Activity with the onClick() method but my code is not working. Can you please offer some advice. I have some issues with the recyclerView, since it\'

Answer 1

This can be very useful for you to get to other Activities

first the recycler view adapter:

public class RecyclerViewAdapter extends RecyclerView.Adapter {

final private ListItemClickListener mOnClickListener;
String[] mStrings;

public MainMenuRVAdapter(String[] tvStrings, ListItemClickListener listener) {
    mStrings = tvStrings;
    mOnClickListener = listener;
}

@Override
public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) {
    View view = LayoutInflater.from(parent.getContext()).inflate(R.layout.customRow, parent, false);
    return new ViewHolder(view);
}

@Override
public void onBindViewHolder(ViewHolder holder, int position) {
    holder.bind(position);
}

@Override
public int getItemCount() {
    return mStrings.length;
}

public interface ListItemClickListener {
    void onListItemClick(int clickedItemIndex);
}

class ViewHolder extends RecyclerView.ViewHolder implements View.OnClickListener {
    TextView RowTV;

    public ViewHolder (View itemView) {
        super(itemView);
        RowTV = (TextView) itemView.findViewById(R.id.RowTextView);
        itemView.setOnClickListener(this);
    }

    void bind(int listIndex) {
        RowTV.setText(mListStrings[listIndex]);
    }

    @Override
    public void onClick(View v) {
        int clickedPosition = getAdapterPosition();
        mOnClickListener.onListItemClick(clickedPosition);
    }
}
}

---

Then the MainActivity:

public class MainActivity extends AppCompatActivity
    implements NavigationView.OnNavigationItemSelectedListener, MainMenuRVAdapter.ListItemClickListener {


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

    String[] stringsArray = getResources().getStringArray(R.array.mainStrings);

    RecyclerView rv = (RecyclerView) findViewById(R.id.RV);
    LinearLayoutManager layoutManager = new LinearLayoutManager(this);
    rv.setLayoutManager(layoutManager);
      rv.setAdapter(new MainMenuRVAdapter(stringsArray, this));
}
  @Override
public void onListItemClick(int clickedItemIndex) {
Intent mIntent;
switch (clickedItemIndex) {
 case 0: //first item in Recycler view
            mIntent = new Intent (MainActivity.this, x.class);
            startActivity(mIntent);
            break;
case 1: //second item in Recycler view
            mIntent = new Intent (MainActivity.this, y.class);
            startActivity(mIntent);
            break;
case 2: //third item in Recycler view
            mIntent = new Intent (MainActivity.this, z.class);
            startActivity(mIntent);
            break;
}

you can use this method and add as many cases to the switch().

Hope I Helped.