Adview Not Overlapping MainViews

main.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">


    <ScrollView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_above="@+id/adView"
        android:layout_alignParentTop="true">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content">

            <!--            All Other Layout and files-->


        </LinearLayout>

    </ScrollView>


    <com.google.android.gms.ads.AdView
        xmlns:ads="http://schemas.android.com/apk/res-auto"
        android:id="@+id/adView"
        android:layout_width="wrap_content"
        android:layout_height="wrap_content"
        android:layout_centerHorizontal="true"
        android:layout_alignParentBottom="true"
        ads:adSize="BANNER"
        ads:adUnitId="ca-app-pub-3940256099942544/6300978111"/>
    
 

</RelativeLayout>

These two items are the thing that makes the thing work.

sorry brother doesn't reserve any space for banner ad
but I solved this problem by manually.

<androidx.constraintlayout.widget.ConstraintLayout xmlns:android="http://schemas.android.com/apk/res/android"
    xmlns:ads="http://schemas.android.com/apk/res-auto"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    android:layout_width="match_parent"
    android:layout_height="match_parent">
    <androidx.coordinatorlayout.widget.CoordinatorLayout
        android:layout_width="match_parent"
        android:layout_height="0dp"
        android:background="?attr/bgColorForMyApp"
        app:layout_constraintBottom_toTopOf="@+id/ad_view_linear_layout_at_word_meaning_activity_db"
        app:layout_constraintTop_toTopOf="parent">

    <RelativeLayout
        android:orientation="vertical"
        android:layout_width="match_parent"
        android:layout_height="match_parent">

        <TextView
            android:layout_width="wrap_content"
            android:layout_height="wrap_content"
            android:id="@+id/notification_for_word_with_db"
            android:text="Please read or add more wordModuleEnglishToBangleForEnBnSqlite from date of published !"
            android:textAppearance="@style/TextAppearance.AppCompat.Display2"
            android:textColor="?attr/textColorForMyApp"/>




    <androidx.recyclerview.widget.RecyclerView
        android:id="@+id/list_view_word_meaning_with_db"
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_weight="1"
        android:background="?attr/bgColorForMyApp"
        android:divider="@color/material_light_yellow_50"
        android:dividerHeight="4dp"
        android:fadingEdgeLength="1dp"
        android:footerDividersEnabled="true"
        android:headerDividersEnabled="true"
        android:overScrollFooter="@color/material_light_yellow_50"
        android:overScrollHeader="@color/material_light_yellow_50"
        android:scrollbars="vertical">

    </androidx.recyclerview.widget.RecyclerView>



    </RelativeLayout>
    </androidx.coordinatorlayout.widget.CoordinatorLayout>
    <LinearLayout
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:id="@+id/ad_view_linear_layout_at_word_meaning_activity_db"
        android:background="?attr/bannerAdViewBgColor"
        android:visibility="visible"
        android:layout_gravity="bottom"
        app:layout_constraintBottom_toBottomOf="parent"
        android:paddingBottom="5dp"
        android:orientation="horizontal"
        android:paddingTop="10dp"
        >
        <Space
            android:layout_width="wrap_content"
            android:layout_height="51dp"
            android:id="@+id/spaceForAdview_db"
            />
        <com.google.android.gms.ads.AdView
            android:id="@+id/ad_view_banner_at_word_meaning_activity_db"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            ads:adSize="BANNER"
            ads:adUnitId="@string/banner_at_word_meaning_activity_ad_unit_id" />
    </LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>

The main idea is to reserve space for the ad layout. Relative layout makes it easier. Put everything in a parent layout inside scroll view and put the scrollview above the adlayout. That's it.