If you are looking to create BadgeCount view in android toolbar, here is the way to code it:-

Step 1:- Create badgeCount layout file say badgecount.xml :-

<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content">
    <ImageView
        android:id="@+id/cart_icon"
        android:layout_width="20dp"
        android:layout_height="20dp"
        android:layout_marginTop="10dp"
        android:clickable="true"
        android:src="@drawable/cart" />
    <!-- Badge Count -->

    <TextView
        android:id="@+id/count_badge"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_alignParentTop="true"
        android:layout_toRightOf="@+id/cart_icon"
        android:text="0"
        android:textColor="@android:color/holo_orange_dark" />

</RelativeLayout>

Step 2:- Include above badgecount.xml in the menu.xml using "actionLayout" attribute of item:-

<menu xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:com.badgedemo="http://schemas.android.com/apk/res-auto"
      xmlns:tools="http://schemas.android.com/tools"
      tools:context=".MainActivity">
    <item android:id="@+id/cart_holder"
        com.badgedemo:actionLayout="@layout/batch_icon"
        android:title=""
        com.badgedemo:showAsAction="always" />
    <item android:id="@+id/menu_search"
        android:icon="@drawable/search"
        android:title="Setting"
        com.badgedemo:showAsAction="always"/>
</menu>

Step 3: Code snippet in main activity:-

@Override
protected void onCreate(Bundle savedInstanceState) 
   {
    super.onCreate(savedInstanceState);
    setContentView(R.layout.activity_main);
    Toolbar tb = (Toolbar) findViewById(R.id.toolbar);
    ImageView homeIcon = (ImageView) tb.findViewById(R.id.toolbar_home);
    homeIcon.setOnClickListener(new View.OnClickListener() 
      {
        @Override
          public void onClick(View view)
           {
             cartCount++;
             invalidateOptionsMenu();
           }
      });
      setSupportActionBar(tb);
   }



@Override
public boolean onCreateOptionsMenu(Menu menu)
  {
    Toolbar tb = (Toolbar) findViewById(R.id.toolbar);
     tb.inflateMenu(R.menu.menu_main);
     MenuItem itemCart = menu.findItem(R.id.cart_holder);
     MenuItem itemSetting = menu.findItem(R.id.menu_setting);
     TextView count=(TextView)menu.findItem(R.id.cart_holder).getActionView().findViewById(R.id.count_badge);
    count.setText("" +cartCount);
    tb.setOnMenuItemClickListener(new Toolbar.OnMenuItemClickListener()
        {
         @Override
         public boolean onMenuItemClick(MenuItem item)
            {
               return onOptionsItemSelected(item);
            }
         });
      return true;
     }



@Override
 public boolean onOptionsItemSelected(MenuItem item)
    {
      switch (item.getItemId()) 
        {
         case R.id.cart_holder:
           Toast.makeText(this, "Value at your cart is"+cartCount, Toast.LENGTH_SHORT) .show();
            break;
         case R.id.menu_setting:
           Toast.makeText(this, "Settings selected", Toast.LENGTH_SHORT).show();
            break;
         default:
            break;
        } 
     return true;
    }
  }