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How to prevent bottom navigation from hiding when scrolling a CoordinatorLayout

I added a ListView with a collapsing toolbar at the top and bottom navigation at the bottom.
My problem is that the bottom navigation keeps hiding when scrolling up. I want it to stay visible.
I enabled nested scrolling programmatically. I tried many solutions, none of them worked.
This is my problem and my XML at the bottom:
This my main.xml
<androidx.coordinatorlayout.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/_coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/_app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:id="#+id/collapse"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:contentScrim="#000000"
android:fitsSystemWindows="true"
app:layout_scrollFlags="scroll|enterAlways|snap">
<LinearLayout
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="8dp"
android:gravity="center_horizontal|center_vertical"
android:orientation="horizontal">
<TextView
android:id="#+id/textview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="collapsing toolbar"
android:textSize="20sp"
android:textColor="#FFFFFF"/>
</LinearLayout>
<androidx.appcompat.widget.Toolbar
android:id="#+id/_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay"/>
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<ListView
android:id="#+id/listview1"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:choiceMode="none"
android:layout_weight="1"/>
<LinearLayout
android:id="#+id/nav"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="8dp"
android:background="#1565C0"
android:gravity="center_horizontal|center_vertical"
android:orientation="horizontal">
<TextView
android:id="#+id/textview2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="bottom navigation"
android:textSize="20sp"
android:textColor="#FFFFFF"/>
</LinearLayout>
</LinearLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>

use a ConstraintLayout as a Root ViewGroup, and wrap in it the CoordinatorLayout, and the BottomNavigation
Then you can need to add some padding at the end of the ListView
<?xml version="1.0" encoding="utf-8"?>
<androidx.constraintlayout.widget.ConstraintLayout 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">
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:id="#+id/_coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/_app_bar"
android:layout_width="match_parent"
android:theme="#style/AppTheme.AppBarOverlay"
android:layout_height="wrap_content">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:id="#+id/collapse"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:contentScrim="#000000"
app:layout_scrollFlags="scroll|enterAlways|snap">
<androidx.appcompat.widget.Toolbar
android:id="#+id/_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay"/>
<LinearLayout
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal|center_vertical"
android:orientation="horizontal"
android:padding="8dp">
<TextView
android:id="#+id/textview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="collapsing toolbar"
android:textColor="#FFFFFF"
android:textSize="20sp" />
</LinearLayout>
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<ListView
android:id="#+id/listview1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:choiceMode="none"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
<LinearLayout
android:id="#+id/nav"
android:layout_width="match_parent"
android:layout_height="0dp"
android:background="#1565C0"
android:gravity="center"
android:orientation="horizontal"
android:padding="8dp"
app:layout_constraintBottom_toBottomOf="parent">
<TextView
android:id="#+id/textview2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="bottom navigation"
android:textColor="#FFFFFF"
android:textSize="20sp" />
</LinearLayout>
</androidx.constraintlayout.widget.ConstraintLayout>
RelativeLayout version
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout 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">
<androidx.coordinatorlayout.widget.CoordinatorLayout
android:id="#+id/_coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/_app_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:id="#+id/collapse"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:contentScrim="#000000"
app:layout_scrollFlags="scroll|enterAlways|snap">
<androidx.appcompat.widget.Toolbar
android:id="#+id/_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/AppTheme.PopupOverlay" />
<LinearLayout
android:id="#+id/header"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:gravity="center_horizontal|center_vertical"
android:orientation="horizontal"
android:padding="8dp">
<TextView
android:id="#+id/textview1"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="collapsing toolbar"
android:textColor="#FFFFFF"
android:textSize="20sp" />
</LinearLayout>
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<ListView
android:id="#+id/listview1"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:choiceMode="none"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</androidx.coordinatorlayout.widget.CoordinatorLayout>
<LinearLayout
android:id="#+id/nav"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#1565C0"
android:gravity="center"
android:orientation="horizontal"
android:padding="8dp"
app:layout_constraintBottom_toBottomOf="parent">
<TextView
android:id="#+id/textview2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:padding="8dp"
android:text="bottom navigation"
android:textColor="#FFFFFF"
android:textSize="20sp" />
</LinearLayout>
</RelativeLayout>
Preview (replace ListView with NestedScrollView for simplicity)

Add ScrollView after CollapsingToolBar not working

In my CountryActivityInfo.java I have a collapsing toolbar with both width and height set to match-parent so it can occupy the whole phone screen. When I scroll up the toolbar gets a fixed 200dp height.
Right now, it looks like this:
I want to display, in that white screen that appears when the toolbar is collapsed, a vertical scroll view with a text view inside. How can I do that? I've tried this way:
<android.support.design.widget.AppBarLayout
android:id="#+id/testeparainfo"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?attr/actionBarDivider">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/backgroundcollapsedtoolbarinfo"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="exitUntilCollapsed|scroll">
<ImageView
android:id="#+id/imgCountryInfoFoto"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop" />
<ImageView
android:id="#+id/imgCountryInfoEscuro"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:background="#drawable/background_pais_info"
android:scaleType="centerInside" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbaridinfo"
android:layout_width="match_parent"
android:layout_height="200dp"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</android.support.v7.widget.Toolbar>
<TextView
android:id="#+id/txtNomePaisInfo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_marginStart="30dp"
android:layout_marginTop="520dp"
android:paddingBottom="10dp"
android:text="TextView"
android:textColor="#android:color/background_light"
android:textSize="35sp"
app:layout_anchor="#+id/testeparainfo"
app:layout_anchorGravity="left|bottom" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<ScrollView
android:layout_width="match_parent"
android:layout_gravity="bottom"
android:layout_height="wrap_content">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/txtInfoPais"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignStart="#+id/btnArrowBackWhite"
android:layout_marginBottom="111dp"
android:text="TextView"
android:textColor="#android:color/background_light"
android:textSize="15sp"
android:visibility="invisible"
app:layout_anchor="#+id/imgCountryInfoFoto"
app:layout_anchorGravity="bottom|center" />
</LinearLayout>
</ScrollView>
But, when I do this, the text view gets inside the collapsing toolbar and gets collapsed with the toolbar.
By the way, all the XML is wrapped up in a Coordinator Layout!!!

Change the root to CoordinatorLayout
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="#dimen/app_bar_height"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_scrolling" />
</android.support.design.widget.CoordinatorLayout>
and then in content_scrolling.xml use NestedScrollView and app:layout_behavior="#string/appbar_scrolling_view_behavior" use this property for proper behaviour.
<android.support.v4.widget.NestedScrollView xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
xmlns:tools="http://schemas.android.com/tools"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
...
</android.support.v4.widget.NestedScrollView>

Add app:layout_behavior="#string/appbar_scrolling_view_behavior" inside your ScrollView.

Replace this code
you have to add app:layout_behavior="#string/appbar_scrolling_view_behavior" in your ScrollView.
<ScrollView
android:layout_width="match_parent"
android:layout_gravity="bottom"
android:layout_height="wrap_content"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical" >
<TextView
android:id="#+id/txtInfoPais"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignStart="#+id/btnArrowBackWhite"
android:layout_marginBottom="111dp"
android:text="TextView"
android:textColor="#android:color/background_light"
android:textSize="15sp"
android:visibility="invisible"
app:layout_anchor="#+id/imgCountryInfoFoto"
app:layout_anchorGravity="bottom|center" />
</LinearLayout>
</ScrollView>

Fragment going over ActionBar in ViewPager

I am using viewpager to show different fragments but in this one of fragment replaces the actionbar. Till now I have found that it is because of edittext which I am using for searching items. When I remove edittext from this it works fine.
The main activity layout is a CoordinatorLayout, containing the typical AppBarLayout and then a ViewPager and it is filling whole screen.
fragment_gst_rates.xml:
<LinearLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:padding="5dp"
tools:context="com.kamalarora.mygst.FragmentGstRates">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="#+id/linearLayout">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content">
<EditText
android:id="#+id/searchBox"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:hint="Search items . . ."
android:layout_marginTop="5dp"
android:layout_marginBottom="2dp"
android:drawableRight="#android:drawable/ic_menu_search"/>
</LinearLayout>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="horizontal"
android:background="#color/lightGrey">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Products"
android:textSize="18dp"
android:layout_marginLeft="1dp"
android:padding="5dp"/>
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="GST Rate"
android:layout_marginRight="1dp"
android:textSize="18dp"
android:gravity="right"
android:padding="3dp"/>
</LinearLayout>
<ListView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:id="#+id/listView">
</ListView>
</LinearLayout>
</LinearLayout>
activity_main.xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:orientation="vertical"
tools:context="com.kamalarora.mygst.MainActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:paddingTop="#dimen/appbar_padding_top"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay">
</android.support.v7.widget.Toolbar>
<View
android:id="#+id/appbar_bottom"
android:layout_width="match_parent"
android:layout_height="1dp"
android:background="#android:color/transparent"
android:visibility="invisible" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="104dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<android.support.design.widget.BottomNavigationView
android:id="#+id/bottomNav"
android:layout_width="match_parent"
android:layout_height="50dp"
android:layout_alignParentBottom="true"
android:layout_gravity="bottom"
app:itemBackground="#color/white"
app:itemIconTint="#color/mediumgrey"
app:itemTextColor="#color/mediumgrey"
app:menu="#menu/menu_bottom" />
<!--<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="end|bottom"
android:layout_margin="#dimen/fab_margin"
app:srcCompat="#android:drawable/ic_dialog_email" /> -->
</android.support.design.widget.CoordinatorLayout>

do you tried with the linear layout at the root there try change with android:layout_height="wrap_content" .

AppbarLayout with Toolbar, Navigation Drawer, and tabs

I'm developing an app that has a Main Activity and a Navigation Drawer to switch between different fragments inside the Main Activity.
One of the fragments contains a tab layout.
My layouts are a mess and they don't behave or perform properly.
Here is my XML:
Main:
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="right"
android:fitsSystemWindows="true"
android:clickable="true"
android:layoutDirection="rtl"
android:id="#+id/drawer_layout">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layoutDirection="rtl"
android:background="#EEEEEE"
android:clickable="true">
<include
android:id="#+id/toolbar"
android:gravity="right"
layout="#layout/toolbar"
android:clickable="true" />
<FrameLayout
android:id="#+id/content_frame"
android:layout_below="#id/toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clickable="true" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/mainFab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_gravity="bottom|end"
android:layout_marginLeft="16dp"
android:layout_marginBottom="16dp"
android:layout_marginTop="5dp"
android:elevation="8dp"
app:pressedTranslationZ="12dp"
app:backgroundTint="?android:colorAccent"
android:src="#drawable/ic_perm_phone_msg_white_24px" />
<LinearLayout
android:id="#+id/miniFabFrame"
android:orientation="vertical"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="invisible"
android:layout_alignParentLeft="true"
android:layout_gravity="bottom|end"
android:layout_marginLeft="20dp"
android:layout_above="#id/mainFab"
android:padding="0dp">
<android.support.design.widget.FloatingActionButton
android:id="#+id/messageFab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:elevation="8dp"
android:layout_marginTop="5dp"
android:layout_marginRight="0dp"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
app:pressedTranslationZ="12dp"
app:backgroundTint="?android:colorPrimary"
app:fabSize="mini"
android:src="#drawable/ic_textSMS_white_24px" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/callFab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:layout_alignParentLeft="true"
android:layout_marginTop="5dp"
android:layout_marginRight="0dp"
android:layout_marginBottom="5dp"
android:layout_marginLeft="5dp"
android:elevation="8dp"
app:pressedTranslationZ="12dp"
app:backgroundTint="?android:colorPrimary"
app:fabSize="mini"
android:src="#drawable/ic_call_white_24px" />
</LinearLayout>
</RelativeLayout>
<android.support.design.widget.NavigationView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="right"
android:id="#+id/nav_view"
android:layoutDirection="rtl"
app:headerLayout="#layout/header"
app:menu="#menu/nav_menu" />
</android.support.v4.widget.DrawerLayout>
Tabs Fragment:
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:orientation="vertical"
android:layout_width="fill_parent"
android:layout_height="fill_parent"
android:fitsSystemWindows="true"
android:id="#+id/halachot_layout"
android:layoutDirection="ltr">
<android.support.design.widget.AppBarLayout
android:layout_height="wrap_content"
android:layout_width="match_parent"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<com.refractored.PagerSlidingTabStrip
android:id="#+id/halachotTabs"
android:layout_below="#id/halachot_layout"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
android:fitsSystemWindows="true"
pstsPaddingMiddle="false"
app:pstsShouldExpand="true" />
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/halachotPager"
android:layout_width="match_parent"
android:layout_height="0dp"
android:layout_weight="1" />
</LinearLayout>
I want to use Coordinator Layout in my Main layout, and use AppBarLayout to wrap the Toolbar, although I don't know how to use them.
If someone could please help me organize my layout properly, with some explanations of how this works and what I am doing wrong, I would appreciate it very very much.
Thanks!

Firstly create an activity layout which contains Navigation Drawer and ToolBar
<android.support.v4.widget.DrawerLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.CoordinatorLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="#dimen/app_bar_height"
android:background="#drawable/ab_bg2"
android:fitsSystemWindows="true"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleTextAppearance="#style/Base.TextAppearance.AppCompat.Subhead"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:expandedTitleMarginBottom="40dp">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:contentInsetStart="0dp"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<!-- Framelayout to display Fragments -->
<FrameLayout
android:id="#+id/frame_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginBottom="5dp"
android:layout_marginRight="3dp"
android:layout_marginTop="5dp"
android:background="#drawable/linlayoutshape_shadow"
android:tag="#string/layout_default"/>
</android.support.design.widget.CoordinatorLayout>
<ListView
android:id="#+id/list_slidermenu"
android:layout_width="250dp"
android:layout_height="match_parent"
android:layout_gravity="right"
android:background="#color/Drawer_bg"
android:choiceMode="singleChoice"
android:divider="#color/Drawer_bg"
android:dividerHeight="10dp"
android:listSelector="#drawable/list_selector"
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:paddingTop="10dp" />
Now create a Fragment which will show your Tab layout
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<com.utils.PagerSlidingTabStrip
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="45dp"
android:background="#drawable/background_tab"
app:pstsShouldExpand="true" />
<com.utils.CustomViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/linHeader"
android:background="#drawable/background_tab"
tools:context=".TestBoardActivity" />
</RelativeLayout>

how to change the direction of CollapsingToolbarLayout's title?

I used Design Support Library in my project and want to change the direction of CollapsingToolbarLayout's title from ltr to rtl(as you can see below).how can I do that?
I checked this link but couldn't find anything usefull.
the layout for this design is not ready yet, but this is a similar xml:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="#dimen/detail_backdrop_height"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginStart="48dp"
app:expandedTitleMarginEnd="64dp">
<ImageView
android:id="#+id/backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingTop="24dp">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="#dimen/card_margin">
<LinearLayout
style="#style/Widget.CardContent"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Info"
android:textAppearance="#style/TextAppearance.AppCompat.Title" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/cheese_ipsum" />
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="#dimen/card_margin"
android:layout_marginLeft="#dimen/card_margin"
android:layout_marginRight="#dimen/card_margin">
<LinearLayout
style="#style/Widget.CardContent"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Friends"
android:textAppearance="#style/TextAppearance.AppCompat.Title" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/cheese_ipsum" />
</LinearLayout>
</android.support.v7.widget.CardView>
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="#dimen/card_margin"
android:layout_marginLeft="#dimen/card_margin"
android:layout_marginRight="#dimen/card_margin">
<LinearLayout
style="#style/Widget.CardContent"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="Related"
android:textAppearance="#style/TextAppearance.AppCompat.Title" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/cheese_ipsum" />
</LinearLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:layout_height="wrap_content"
android:layout_width="wrap_content"
app:layout_anchor="#id/appbar"
app:layout_anchorGravity="bottom|right|end"
android:src="#drawable/ic_discuss"
android:layout_margin="#dimen/fab_margin"
android:clickable="true"/>

at the end,I find that I can do this in both xml and java:
these attribute in xml code
<android.support.design.widget.CollapsingToolbarLayout
app:collapsedTitleGravity="right"
app:expandedTitleGravity="right"
or these codes in java
collapsingToolbar.setExpandedTitleGravity(Gravity.RIGHT);
collapsingToolbar.setCollapsedTitleGravity(Gravity.RIGHT);
can change the direction of title.

I remove ExpandedTitleGravity and CollapsedTitleGravity from xml and i check direction of layout and add programmatically gravity to the collapsingToolbarLayout as bellow.
Be sure that in your if condition you are getting direction properly, sometimes its not giving right direction.
if (ViewCompat.getLayoutDirection("your_view_here") == ViewCompat.LAYOUT_DIRECTION_LTR) {
collapsingToolbarLayout.setExpandedTitleGravity(Gravity.START | Gravity.BOTTOM);
} else {
collapsingToolbarLayout.setExpandedTitleGravity(Gravity.END | Gravity.BOTTOM);
}