title: admob banner ads overlaps main layout
body: <p>Admob banner ads in my android app overlaps bottom of the main layout, there are many solutions on here but non of them is working for me.how do i separate this two layouts. following is my activity.main.xml</p>
  
  <pre><code>&lt;android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
      xmlns:app="http://schemas.android.com/apk/res-auto"
      android:id="@+id/drawerLayout"
      android:layout_width="match_parent"
      android:layout_height="match_parent"
      xmlns:ads="http://schemas.android.com/apk/res-auto"&gt;
  
      &lt;android.support.design.widget.CoordinatorLayout
          android:id="@+id/coordinator_layout"
          android:layout_width="match_parent"
          android:layout_height="match_parent"&gt;
  
          &lt;ProgressBar
              android:id="@+id/progressBar1"
              style="?android:attr/progressBarStyleLarge"
              android:layout_width="wrap_content"
              android:layout_height="match_parent"
              android:layout_centerHorizontal="true"
              android:indeterminate="false"
              android:layout_gravity="center" /&gt;
  
          &lt;WebView
              android:id="@+id/webView1"
              android:layout_width="fill_parent"
              android:layout_height="fill_parent"/&gt;
  
          &lt;com.google.android.gms.ads.AdView
              android:id="@+id/adView"
              android:layout_gravity="bottom"
              android:layout_width="wrap_content"
              android:layout_height="wrap_content"
              android:layout_centerHorizontal="true"
              android:layout_alignParentBottom="true"
              ads:adSize="SMART_BANNER"
              ads:adUnitId="@string/banner_ad_unit_id"&gt;
          &lt;/com.google.android.gms.ads.AdView&gt;
  
      &lt;/android.support.design.widget.CoordinatorLayout&gt;
  
      &lt;android.support.design.widget.NavigationView
          android:id="@+id/navigation_view"
          android:layout_width="wrap_content"
          android:layout_height="match_parent"
          android:layout_gravity="start"
          app:itemIconTint="#d20b0d"
          app:itemTextColor="#333"
          app:menu="@menu/navigation_items" /&gt;
  &lt;/android.support.v4.widget.DrawerLayout&gt;
  </code></pre>