How to implement this bottom navigation bar

Question

Hei I have the new android studio 4.1

I have imported a bottom navigation menu from git hub here this one

Now I have set up dependencies correctly I did all the things necessary but still, there are no actions in the navigation bar, the colour is not changing. even the menus are not displaying

here is the main activity code

     <me.ibrahimsn.lib.SmoothBottomBar
            android:id="@+id/bottomBar"
            android:layout_width="match_parent"
            android:layout_height="70dp"
            app:backgroundColor="@color/colorPrimary"
            app:layout_constraintBottom_toBottomOf="parent"
            app:layout_constraintEnd_toEndOf="parent"
            app:layout_constraintStart_toStartOf="parent"
            app:menu="@menu/menu" />
    
    
          </androidx.constraintlayout.widget.ConstraintLayout> 



this is the menu code
  

       <?xml version="1.0" encoding="utf-8"?>
            <menu xmlns:android="http://schemas.android.com/apk/res/android">
     
            <item android:id="@+id/home"
            android:title="Home"/>
    
            <item android:id="@+id/rank"
            android:title="Rank"/>
            </menu>  

now still the background is white see this: image still not changing

Answer 1

Have you added this line in your layout parent tag:

xmlns:app = "http://schemas.android.com/apk/res-auto"