How to add bottom view to a Coordinator Layout with view pager?

Question

I want to add a bottom view to a Coordinator layout with view pager in it , Bottom View will be on top of fragment loaded by view pager and independent of it .

I added a linear layout with

layout_gravity = "bottom" 

but bottom view linear layout is not showing at all

Following is my xml layout of the activity.

<android.support.design.widget.CoordinatorLayout  xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent">  <android.support.design.widget.AppBarLayout     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar">      <android.support.v7.widget.Toolbar         android:id="@+id/maintoolbar"         android:layout_width="match_parent"         android:layout_height="?attr/actionBarSize"         android:background="?attr/colorPrimary"         app:layout_scrollFlags="scroll|enterAlways"         app:popupTheme="@style/ThemeOverlay.AppCompat.Light" />     <android.support.design.widget.TabLayout         android:id="@+id/maintabs"         android:layout_width="match_parent"         android:layout_height="wrap_content"         app:tabMode="fixed"         app:tabGravity="fill" /> </android.support.design.widget.AppBarLayout>      <android.support.v4.view.ViewPager     android:id="@+id/mainviewpager"     android:layout_width="match_parent"     android:layout_height="match_parent"     app:layout_behavior="@string/appbar_scrolling_view_behavior"  />   <LinearLayout     android:id="@+id/completeBottomView"     android:layout_width="match_parent"     android:layout_height="wrap_content"     android:orientation="vertical">      <ProgressBar         android:id="@+id/progressBarBottomView"         style="?android:attr/progressBarStyleHorizontal"         android:layout_width="match_parent"         android:layout_height="5dp"         android:indeterminate="false"         android:visibility="gone"         android:max="100"         android:progress="1"/>      <HorizontalScrollView         android:id="@+id/limiter_scroller"         android:layout_width="fill_parent"         android:layout_height="wrap_content"         android:layout_gravity="bottom|start"         android:background="#FF3399"         >         <LinearLayout             android:id="@+id/limiter_layout"             android:layout_width="fill_parent"             android:layout_height="wrap_content"             android:orientation="horizontal"             android:onClick="clickFromBottomView"/>     </HorizontalScrollView>  </LinearLayout>  </android.support.design.widget.CoordinatorLayout> 

Answer 1

As pointed out in comment by @Dhawal ....Solution is to wrap LinearLayout completeBottomView in a FrameLayout with android:layout_gravity="bottom"

Answer 2

Android CoordinatorLayout Bottom Layout Behaviour.

activity_bottom.xml

<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"     xmlns:app="http://schemas.android.com/apk/res-auto"     android:layout_width="match_parent"     android:layout_height="match_parent">      <android.support.design.widget.AppBarLayout         android:id="@+id/app_bar"         android:layout_width="match_parent"         android:layout_height="wrap_content">          <android.support.v7.widget.Toolbar             android:id="@+id/toolbar"             android:layout_width="match_parent"             android:layout_height="?attr/actionBarSize"             android:background="?attr/colorPrimaryDark"             app:layout_scrollFlags="scroll|enterAlways"             app:theme="@style/ThemeOverlay.AppCompat.Dark.ActionBar" />     </android.support.design.widget.AppBarLayout>      <android.support.v7.widget.RecyclerView         android:id="@+id/list"         android:layout_width="match_parent"         android:layout_height="match_parent"         android:background="#C0C0C0"         app:layout_behavior="@string/appbar_scrolling_view_behavior" />      <com.example.android.coordinatedeffort.widget.FooterBarLayout         android:layout_width="match_parent"         android:layout_height="?attr/actionBarSize"         android:layout_gravity="bottom">          <TextView             android:layout_width="match_parent"             android:layout_height="?attr/actionBarSize"             android:background="#007432"             android:gravity="center"             android:text="Footer View"             android:textColor="@android:color/white"             android:textSize="25sp" />     </com.example.android.coordinatedeffort.widget.FooterBarLayout>  </android.support.design.widget.CoordinatorLayout> 

FooterBarLayout.java

FooterBarBehavior.java