--------- BottomNavigationView Tutorial ------------

Step1: Add BottomNavigationView in android layout file

Step2: Create items for bottomNavigationView

   Steps:
   
  1. Create Menu Folder in Resource (By right click and press android resource directory)
  2. Create menu resource file in menu folder
  3. Add items using <item/> tag (id,title,icon)

Step3: Configure BottomNavigationView to use Menu Items e.g App:Menu = Menu/menu_items"

Step4: Make Fragments for all bottom navigation items

step5: Attach Fragments to BottomNavigationView

  - use setOnItemSelectedListner