1. Inside res create folder with name color (like drawable)
2. Right click on color folder. Select new-> color resource file-> create color.xml file (bnv_tab_item_foreground) (Figure 1: File Structure)
3. Copy and paste bnv_tab_item_foreground
<android.support.design.widget.BottomNavigationView
android:id="@+id/navigation"
android:layout_width="0dp"
android:layout_height="wrap_content"
android:layout_marginEnd="0dp"
android:layout_marginStart="0dp"
app:itemBackground="@color/appcolor"//diffrent color
app:itemIconTint="@color/bnv_tab_item_foreground" //inside folder 2 diff colors
app:itemTextColor="@color/bnv_tab_item_foreground"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintLeft_toLeftOf="parent"
app:layout_constraintRight_toRightOf="parent"
app:menu="@menu/navigation" />
bnv_tab_item_foreground:
<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
<item android:state_checked="true" android:color="@color/white" />
<item android:color="@android:color/darker_gray" />
</selector>
Figure 1: File Structure:
