No hay efecto de ondulación en el tacto en la vista de reciclaje

Tengo una vista de reciclaje con cuatro elementos de cuadrícula (2 * 2) que funcionan como un menú. Sin embargo, cuando hago clic en ellos no se muestra ningún efecto de rizo. Simplemente me lleva a la siguiente actividad sin ninguna confirmación visual de que la vista fue presionada. ¿Alguien puede ayudar?

Actividad principal

• Cómo utilizar RippleDrawable programaticamente en código (no xml) con Android 5.0 Lollipop?
• No se pudo encontrar la clase 'android.graphics.drawable.RippleDrawable' Unicode issue?
• Android: <include> con RippleEffect & StateListAnimator
• ¿Cómo activar el efecto de rizo en Android Lollipop, en una ubicación específica dentro de la vista, sin desencadenar eventos de touch?
• Android Button Ripple en Lollipop y resaltar en pre lollipop

public class MainActivity extends AppCompatActivity implements MainMenuAdapter.OnItemClickListener { Toolbar toolbar; private static List<ViewModel> tileItems = new ArrayList<>(); static { tileItems.add(new ViewModel("Activity", "#3F51B5", R.drawable.activity)); tileItems.add(new ViewModel("Profile", "#E91E63", R.drawable.profile)); tileItems.add(new ViewModel("Training", "#FF5722", R.drawable.training)); tileItems.add(new ViewModel("Diet", "#4CAF50", R.drawable.diet)); } @Override protected void onCreate(Bundle savedInstanceState) { super.onCreate(savedInstanceState); setContentView(R.layout.activity_main); final RecyclerView recyclerView = (RecyclerView) findViewById(R.id.recyclerView); recyclerView.setLayoutManager(new GridLayoutManager(this, 2)); MainAdapter adapter = new MainAdapter(tileItems, MainActivity.this); recyclerView.setAdapter(adapter); adapter.setOnItemClickListener(this); // Toolbar toolbar = (Toolbar) findViewById(R.id.toolbar); setSupportActionBar(toolbar); } @Override public void onBackPressed() { this.moveTaskToBack(true); // this.finishAffinity(); } @Override public boolean onCreateOptionsMenu(Menu menu) { // Inflate the menu; this adds items to the action bar if it is present. getMenuInflater().inflate(R.menu.menu_main, menu); return true; } @Override public void onItemClick(View view, ViewModel viewModel) { } } 

MainAdapter

 public class MainAdapter extends RecyclerView.Adapter<MainMenuAdapter.ViewHolder> implements View.OnClickListener { private List<ViewModel> items; private OnItemClickListener onItemClickListener; private Context context; // Adapter constructor public MainAdapter(List<ViewModel> items, Context context) { this.items = items; this.context = context; } public void setOnItemClickListener(OnItemClickListener onItemClickListener) { this.onItemClickListener = onItemClickListener; } @Override public ViewHolder onCreateViewHolder(ViewGroup parent, int viewType) { View v = LayoutInflater.from(parent.getContext()).inflate(R.layout.main_item, parent, false); return new ViewHolder(v); } @Override public void onBindViewHolder(ViewHolder viewHolder, int position) { final ViewModel dataItem = items.get(position); viewHolder.colorBlock.setBackgroundColor(dataItem.getColor()); viewHolder.menuName.setText(dataItem.getName()); viewHolder.menuIcon.setImageResource(dataItem.getImage()); viewHolder.itemView.setTag(dataItem); if (dataItem.getActivity() != null) { viewHolder.colorBlock.setOnClickListener(new View.OnClickListener() { @Override public void onClick(View view) { Intent i = new Intent(context, dataItem.getActivity()); context.startActivity(i); } }); } } @Override public int getItemCount() { return items.size(); } @Override public void onClick(final View v) { // Give some time to the ripple to finish the effect if (onItemClickListener != null) { new Handler().postDelayed(new Runnable() { @Override public void run() { onItemClickListener.onItemClick(v, (ViewModel) v.getTag()); } }, 200); } } /** This is our ViewHolder class */ public static class ViewHolder extends RecyclerView.ViewHolder { public TextView menuName; public View colorBlock; public ImageView menuIcon; public ViewHolder(View convertView) { super(convertView); // Must call super() first menuName = (TextView) convertView.findViewById(R.id.menuName); colorBlock = (View) convertView.findViewById(R.id.colorBlock); menuIcon = (ImageView) convertView.findViewById(R.id.menuItem); } } public interface OnItemClickListener { void onItemClick(View view, ViewModel viewModel); } } 

Activity_main.xml

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" android:layout_width="match_parent" android:layout_height="match_parent" tools:context=".MainActivity"> <include android:id="@+id/toolbar" layout="@layout/toolbar" android:layout_height="wrap_content" android:layout_width="match_parent"/> <android.support.v7.widget.RecyclerView android:id="@+id/recyclerView" android:layout_below="@id/toolbar" android:layout_width= "match_parent" android:layout_height = "match_parent" /> </RelativeLayout> 

Main_item.xml

 <?xml version="1.0" encoding="utf-8"?> <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:clickable="true" android:focusable="true" android:foreground="?android:attr/selectableItemBackground"> <View android:id="@+id/colorBlock" android:layout_width="match_parent" android:layout_height="170dp" /> <ImageView android:id="@+id/menuItem" android:layout_width="120dp" android:layout_height="120dp" android:layout_centerHorizontal="true" android:padding="16dp" /> <TextView android:id="@+id/menuName" android:layout_width="wrap_content" android:layout_height="wrap_content" android:padding="16dp" android:layout_centerHorizontal="true" android:layout_alignParentBottom="true" android:textColor="@android:color/white" android:textSize="16sp"/> </RelativeLayout> 

 <RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" android:layout_width="match_parent" android:layout_height="match_parent" android:clickable="true" android:focusable="true" android:foreground="?android:attr/selectableItemBackground" android:background="?android:selectableItemBackground">