Develop Reference

How do I use parallax to scroll through my content?

I have some issues with parallax for android, where I currently have an image on top (with text content in the center) and a button on the top right.
Now as I scroll, I want the text and button to remain fixed on screen. As I scroll past the appbar (toolbar), the toolbar should be fixed to the top and the button should be on top right of it, fixed to it , while the rest of the content stays scrollable.
Here's my code (without parallax), any clue how i can achieve this ?
<?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/cl_root_view"
android:background="#color/white"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipChildren="false">
<LinearLayout
android:id="#+id/activity_main"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="0dp"
app:elevation="0dp">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
style="#style/Toolbar"
android:background="#color/white"
android:contentInsetStart="5dp"
android:contentInsetLeft="5dp"
android:contentInsetEnd="5dp"
android:contentInsetRight="5dp"
app:contentInsetEnd="5dp"
app:contentInsetLeft="5dp"
app:contentInsetRight="5dp"
app:contentInsetStart="5dp"
app:titleTextAppearance="#style/Toolbar.TitleText">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<TextView
android:id="#+id/toolbar_title"
style="#style/Toolbar.AltTitleText"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerInParent="true"
android:drawableStart="#drawable/ic_dots"
android:gravity="center_vertical" />
<ImageButton
android:id="#+id/my_button"
style="#style/Widget.AppCompat.Button.Borderless"
android:layout_width="30dp"
android:layout_height="30dp"
android:layout_alignParentEnd="true"
android:layout_centerVertical="#+id/toolbar_title"
android:layout_marginEnd="20dp"
android:background="#drawable/ic_my_button"
android:tint="#color/black" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>
<ScrollView
android:id="#+id/scrollView"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<android.support.constraint.ConstraintLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FFFFFF">
<TextView
android:id="#+id/roomsTitle"
style="#style/Headline2LeftBlack"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_vertical"
android:layout_toStartOf="#+id/btnMore"
android:paddingStart="20dp"
android:paddingEnd="20dp"
android:text="#string/meeting_rooms"
android:textAppearance="#style/TextAppearance.Text.Chronicle"
app:layout_constraintTop_toTopOf="parent" />
<Button
android:id="#+id/btnMore"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#color/transparent"
android:fontFamily="sans-serif"
android:letterSpacing="0.02"
android:lineSpacingExtra="2sp"
android:paddingStart="20dp"
android:paddingEnd="20dp"
android:text="#string/all_rooms"
android:textColor="#color/reddish"
android:textSize="18sp"
app:layout_constraintRight_toRightOf="parent"
app:layout_constraintTop_toTopOf="parent" />
<android.support.v4.view.ViewPager
android:id="#+id/roomViewPager"
android:layout_width="match_parent"
android:layout_height="400dp"
android:clipToPadding="false"
android:overScrollMode="never"
android:paddingStart="15dp"
android:paddingTop="16dp"
android:paddingEnd="15dp"
android:paddingBottom="45dp"
app:layout_constraintTop_toBottomOf="#id/roomsTitle" />
<RelativeLayout
android:id="#+id/register_a_visitor_container"
android:layout_width="0dp"
android:layout_height="75dp"
android:layout_margin="5dp"
android:layout_marginTop="35dp"
android:background="#color/white"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/roomViewPager">
<ImageView
android:id="#+id/register_visitor_icon"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="16dp"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:tint="#color/reddish"
android:src="#drawable/ic_register_visitor_icon"
/>
<TextView
android:id="#+id/register_a_visitor_button"
style="#style/Body1RegLeftBlack"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_centerVertical="true"
android:letterSpacing="0.01"
android:layout_marginStart="16dp"
android:layout_toEndOf="#+id/register_visitor_icon"
android:lineSpacingExtra="8sp"
android:text="#string/register_a_visitor"
android:textAllCaps="false"
android:textAppearance="#style/TextAppearance.Text.Roboto.Regular" />
<ImageView
android:id="#+id/reset_password_chevron"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:gravity="right"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true"
android:layout_marginEnd="16dp"
android:tint="#color/brownish_grey"
android:background="#drawable/ic_baseline_chevron_right_24px"
/>
</RelativeLayout>
<!-- TODO work on it after MVP -->
<RelativeLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:visibility="gone"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toBottomOf="#+id/container">
<TextView
android:id="#+id/upcoming_events"
style="#style/Headline3LeftGrey"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_marginStart="25dp"
android:text="#string/upcoming_events" />
<android.support.v7.widget.RecyclerView
android:id="#+id/event_recycler_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/upcoming_events"
android:background="#color/black"
tools:listitem="#layout/item_repo_view" />
</RelativeLayout>
</android.support.constraint.ConstraintLayout>
</ScrollView>
</LinearLayout>
</android.support.design.widget.CoordinatorLayout>
As you can see from the above layout. I want to add an image (and add the my_button on top right of that image) that is above the toolbar and scrolls off the screen as you scroll up while my button stays in its place until the toolbar gets on top ,after which the toolbar is affixed to the top as you scroll further up, unless you scroll down and the image is visible again and the button is no more fixed.
Please let me know if this is confusing,I will try to explain it better with diagrams if possible.
Any examples will be helpful! thanks!

Please refer below code, i have made something like you.
<?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:id="#+id/view_profile_parent_layout"
android:background="#color/splash_bg_color"
tools:context=".view_profile.ViewProfileActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_barLayout"
android:layout_width="match_parent"
android:layout_height="#dimen/view_profile_profile_app_bar_height"
android:elevation="#dimen/view_profile_app_bar_elevation"
android:theme="#style/ThemeOverlay.AppCompat.Light">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_bar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="?attr/colorPrimary"
app:titleEnabled="false"
android:fitsSystemWindows="true"
app:layout_scrollFlags="exitUntilCollapsed|scroll">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginTop="?attr/actionBarSize">
<de.hdodenhof.circleimageview.CircleImageView
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/view_profile_imageView"
android:layout_width="#dimen/view_profile_profile_width"
android:layout_height="#dimen/view_profile_profile_height"
android:src="#drawable/ic_profile_icon"
android:layout_centerHorizontal="true"
app:civ_border_width="#dimen/view_profile_profile_border_width"
app:civ_border_color="#color/textPrimary"/>
<TextView
android:id="#+id/view_profile_profile_name_textView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="#dimen/view_profile_profile_name_margin_top"
android:layout_below="#id/view_profile_imageView"
android:fontFamily="#font/roboto_regular"
android:text=""
android:textSize="#dimen/view_profile_profile_name_text_size"
android:gravity="center"
android:textColor="#color/white"/>
</RelativeLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
app:layout_collapseMode="pin"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:elevation="#dimen/login_btn_elevation"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:contentInsetLeft="0dp"
app:contentInsetStart="0dp"
android:contentInsetStart="0dp"
android:contentInsetLeft="0dp">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<LinearLayout
android:id="#+id/back_button"
android:layout_width="#dimen/back_btn_layout_w"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:layout_alignParentStart="true"
android:orientation="horizontal">
<Button
android:layout_gravity="center_vertical|center_horizontal"
android:layout_width="#dimen/back_btn_w"
android:layout_height="#dimen/back_btn_w"
android:layout_marginStart="#dimen/default_padding"
android:clickable="false"
android:background="#drawable/ic_arrow_back_white_24dp"
android:elevation="#dimen/login_btn_elevation" />
</LinearLayout>
<TextView
android:id="#+id/nav_title"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_centerInParent="true"
android:layout_marginStart="#dimen/nav_outer_h_space"
android:fontFamily="#font/roboto_regular"
android:text=""
android:gravity="center"
android:textColor="#color/white"
android:textSize="#dimen/title_size" />
<Button
android:id="#+id/edit_button"
android:layout_width="#dimen/back_btn_w"
android:layout_height="#dimen/back_btn_w"
android:layout_gravity="right"
android:layout_centerInParent="true"
android:layout_alignParentEnd="true"
android:layout_marginEnd="#dimen/nav_outer_h_space"
android:background="#drawable/edit_white_icon"
android:elevation="#dimen/login_btn_elevation" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
Use
app:layout_scrollFlags="exitUntilCollapsed|scroll"
in collapsing layout
app:layout_collapseMode="pin"
in Toolbar

Make nested scrollview not scroll completely

In my activity XML I have a Collapsing toolbar and, after that, an referring to my other XML where I have a NestedScrollView.
This is an image of the collapsing toolbar when it is NOT collapsed.
When I scroll up, it becomes collapsed and the NestedSrollView appears like this:
I want it to scroll just to some point like this and after that the user cannot scroll more:
How can I achieve this?
This is my main XML:
<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/relLayoutCountryInfo"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
app:layout_anchor="#+id/testeparadetail"
app:layout_anchorGravity="bottom">
<android.support.design.widget.AppBarLayout
android:id="#+id/testeparadetail"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="?attr/actionBarDivider"
app:layout_anchor="#+id/testeparadetail"
app:layout_anchorGravity="bottom">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/backgroundcollapsedtoolbardetail"
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/imgPhotoDetailFundo"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="centerCrop" />
<ImageView
android:id="#+id/imgPhotoDetailEscuro"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:adjustViewBounds="true"
android:background="#drawable/background_pais_info"
android:scaleType="centerInside" />
<ImageView
android:id="#+id/imgEscuroPhotoDetailTopo"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:cropToPadding="false"
android:scaleX="2"
android:scaleY="-1"
app:srcCompat="#drawable/blur_paises_filtro" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolbariddetail"
android:layout_width="match_parent"
android:layout_height="200dp"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
</android.support.v7.widget.Toolbar>
<com.github.mmin18.widget.RealtimeBlurView
android:id="#+id/blurViewDetail"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:realtimeBlurRadius="10dp"
app:realtimeOverlayColor="#8000" />
<TextView
android:id="#+id/txtNomePaisDetail"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:layout_marginStart="30dp"
android:layout_marginTop="520dp"
android:paddingBottom="40dp"
android:text="TextView"
android:textColor="#android:color/background_light"
android:textSize="35sp"
app:layout_anchor="#+id/txtNomeContinente"
app:layout_anchorGravity="left|bottom" />
<TextView
android:id="#+id/txtDefinicao"
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="25sp"
app:layout_anchor="#+id/testeparainfo"
app:layout_anchorGravity="left|bottom" />
<ImageView
android:id="#+id/imgVoltarPhoto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="20dp"
android:layout_marginTop="20dp"
app:srcCompat="#drawable/arrow_back_branca" />
<ImageView
android:id="#+id/imgApagarPhoto"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="355dp"
android:layout_marginTop="550dp"
android:paddingBottom="40dp"
app:layout_anchor="#+id/txtDefinicao"
app:layout_anchorGravity="right|bottom"
app:srcCompat="#android:drawable/ic_menu_delete" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include
layout="#layout/content_scrolling_photo_detail"
/>
And this is my include
<android.support.v4.widget.NestedScrollView 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="fill_parent"
android:layout_height="wrap_content"
android:paddingTop="30dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior">

Add this line to NestedScrollView Child... See my below code as an example...
android:nestedScrollingEnabled="true"
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v4.view.ViewPager
android:id="#+id/viewPager"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_below="#+id/tablayout"
android:layout_marginTop="2dp"
android:nestedScrollingEnabled="true"/> // add this line to NestedScrollView child
</android.support.v4.widget.NestedScrollView>

How to add a recyclerView to the bottom of my layout

I want to add RecyclerView at the bottom to my layout, but it is in wrong position.
Now I Have:
Now RecyclerView is too far down and cuts half of RecyclerView. I Only want RecyclerView at the bottom of my layout but I can't do it.
This is my layout code:
<android.support.constraint.ConstraintLayout 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/map"
android:name="com.google.android.gms.maps.SupportMapFragment"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="showresultactivity.SlideTabsActivity">
<com.google.android.gms.maps.MapView
android:id="#+id/mapView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
<ProgressBar
android:id="#+id/progress"
style="?android:attr/progressBarStyleLarge"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:visibility="gone"
app:layout_constraintBottom_toBottomOf="#+id/mapView"
app:layout_constraintEnd_toEndOf="#+id/mapView"
app:layout_constraintStart_toStartOf="#+id/mapView"
app:layout_constraintTop_toTopOf="#+id/mapView" />
<FrameLayout
android:id="#+id/frameLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true" /><!--this line make too far down, without it my recyclerview will be at the top of my layout-->
</android.support.constraint.ConstraintLayout>
My RecyclerView layout:
<RelativeLayout 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/map"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context="showresultactivity.SlideTabsActivity">
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerViewInfoWindowMarker"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentLeft="true"
android:layout_alignParentRight="true"
android:layout_alignWithParentIfMissing="true"
>
</android.support.v7.widget.RecyclerView>
My recyclerView row item xml :
<RelativeLayout
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="wrap_content">
<LinearLayout
android:paddingLeft="10dp"
android:paddingRight="10dp"
android:id="#+id/map"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#FCFCFC"
tools:context="showresultactivity.SlideTabsActivity">
<android.support.v7.widget.CardView
android:id="#+id/cardView"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:cardCornerRadius="3dp"
app:cardElevation="1dp"
android:layout_margin="5dp"
app:cardPreventCornerOverlap="false">
<RelativeLayout
android:padding="8dp"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/imagesSrcUrl"
android:layout_width="100dp"
android:layout_height="100dp"
android:src="#drawable/ic_launcher"
android:scaleType="centerCrop" />
<TextView
android:id="#+id/first"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentTop="true"
android:layout_alignStart="#+id/description"
android:text="some text"
android:textSize="20dp"
android:textStyle="bold" />
<TextView
android:id="#+id/third"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/first"
android:textSize="12dp"
android:text="some text"
android:layout_marginTop="5dp"
android:gravity="right"
android:textAlignment="gravity"
/>
<TextView
android:id="#+id/description"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_toRightOf="#+id/imagesSrcUrl"
android:layout_below="#id/first"
android:textSize="12dp"
android:text="some text"
android:layout_marginLeft="10dp"
android:layout_marginTop="5dp"
/>
</RelativeLayout>
</android.support.v7.widget.CardView>
</LinearLayout>
<ImageButton
android:layout_centerVertical="true"
android:id="#+id/cardViewNext"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentRight="true"
android:background="#drawable/circle_shape"
android:src="#drawable/ic_next_black" />
<ImageButton
android:layout_centerVertical="true"
android:id="#+id/cardVievPrevious"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:background="#drawable/circle_shape"
android:src="#drawable/ic_previous_black" />
EDIT
I forgot that I have also bottom navigation and the recycler should be at the bottom map but above the bottom navigation.
Layout with bottom nav:
<?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"
xmlns:tools="http://schemas.android.com/tools"
tools:context="SlideTabsActivity"
android:layout_height="match_parent"
android:layout_width="match_parent"
>
<android.support.design.widget.CoordinatorLayout
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
>
<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:layout_weight="1"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay"
app:title="#string/app_name">
</android.support.v7.widget.Toolbar>
<android.support.design.widget.TabLayout
android:id="#+id/tabs"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.design.widget.TabItem
android:id="#+id/tabItem"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tab_text_1" />
<android.support.design.widget.TabItem
android:id="#+id/tabItem2"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tab_text_2" />
<android.support.design.widget.TabItem
android:id="#+id/tabItem3"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="#string/tab_text_3" />
</android.support.design.widget.TabLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.view.ViewPager
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
<include layout="#layout/bottom_navigation_view" android:id="#+id/bottom_nav_view" />
</android.support.design.widget.CoordinatorLayout>
</RelativeLayout>
bottom_navigation_view:
<merge xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/bottomRelativeLayout">
<android.support.design.widget.BottomNavigationView
android:id="#+id/bottom_navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="#drawable/white_grey_border_bottom"
app:menu="#menu/bottom_navigation_main" />
</RelativeLayout>

Adding this line to your framelayout would help you achieve that positioning:
app:layout_constraintBottom_toBottomOf="parent"
Also remember to set the height of your frame layout to: wrap content. The purpose of the line above is to fix/pin your frame layout to the bottom of your constraint layout; any eventual expansion would be upward. Therefore, the contents of your frame layout will never overlap. If there is need for extra space, your frame layout will project upwards while still being fixed to the bottom of the constraint layout.
You can check this for reference on more XML attributes on Constraint layouts: https://developer.android.com/reference/android/support/constraint/ConstraintLayout.html
PS:
You can remove the android:layout_alignParentBottom="true" part of your frame layout; it's not necessary anymore

Changing from one view to another view onScroll

I am working a project. I have a a layout with a view at top and a Scrollview at the bottom of the view. Initially the layout will look like this.
After I scroll up the bottom layout. The view should smoothly change the the below view. And if I scroll down the view should come back to its previous layout.
As you can see there is a change in the position and size of the textviews. How can I achieve this ?
Here is the layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/home_parentLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:animateLayoutChanges="true"
android:background="#color/AT_charcoal">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_alignParentTop="true"
android:layout_marginBottom="9dp"
android:background="#drawable/topographybackgroundx">
<RelativeLayout
android:id="#+id/layout_header_profile"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginLeft="10dp"
android:layout_marginRight="10dp"
android:layout_marginTop="20dp">
<RelativeLayout
android:id="#+id/top_ExpandedHeader"
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<RelativeLayout
android:layout_width="fill_parent"
android:layout_height="wrap_content">
<ImageButton
android:id="#+id/image_invisalignLogo"
android:layout_width="108dp"
android:layout_height="26dp"
android:background="#drawable/invis_logo"
android:contentDescription="#null" />
<ImageButton
android:id="#+id/image_profile"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:background="#drawable/ic_profile_wht"
android:contentDescription="#null" />
</RelativeLayout>
<RelativeLayout
android:id="#+id/number_RelativeLayout"
android:layout_width="wrap_content"
android:layout_height="wrap_content">
<RelativeLayout
android:id="#+id/layout_aligner_expanded_change"
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:layout_marginTop="30dp">
<TextView
android:id="#+id/image_alignerNumber"
style="#style/BigNumber"
android:layout_width="wrap_content"
android:layout_height="138dp"
android:layout_alignParentStart="true"
android:layout_below="#+id/textview_alignerTimeChange"
android:maxLength="2"
android:maxLines="1"
android:text="#string/three"
android:textSize="124sp" />
<TextView
android:id="#+id/textview_alignerChange"
style="#style/BodyWhite"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginStart="5dp"
android:layout_marginTop="80dp"
android:layout_toEndOf="#id/image_alignerNumber"
android:letterSpacing="0.03"
android:text="#string/days_alignerchange" />
<de.hdodenhof.circleimageview.CircleImageView xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/image_selfie_icon"
android:layout_width="96dp"
android:layout_height="96dp"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true"
app:civ_border_color="#FFFFFFFF"
app:civ_border_width="2dp" />
<TextView
android:id="#+id/textview_6alignerNumber"
style="#style/HeaderWhite"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignLeft="#id/image_alignerNumber"
android:layout_below="#id/image_alignerNumber"
android:layout_marginTop="2dp"
android:letterSpacing="0.03"
android:text="#string/aligner_number" />
<TextView
android:id="#+id/textview_expanalignerNumber"
style="#style/HeaderWhite"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/image_alignerNumber"
android:layout_toEndOf="#id/textview_6alignerNumber"
android:text="5" />
<TextView
android:id="#+id/textview_alignerTimeChange"
style="#style/LargeHeaderWhite"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="17dp"
android:letterSpacing="0.03"
android:text="#string/aligner_change"
android:visibility="gone" />
<Button
android:id="#+id/button_change"
style="#style/TextButtonWhite"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/textview_alignerTimeChange"
android:layout_marginTop="15dp"
android:background="#color/AT_lushGreen"
android:gravity="center_vertical"
android:paddingLeft="30dp"
android:paddingRight="30dp"
android:text="#string/changenow"
android:visibility="gone" />
</RelativeLayout>
<View
android:id="#+id/dividerline"
android:layout_width="fill_parent"
android:layout_height="2dp"
android:layout_below="#id/number_RelativeLayout"
android:layout_marginTop="12dp"
android:background="#color/AT_line" />
<TextView
android:id="#+id/addPhoto_TextView"
style="#style/BtnTextBlue18"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/dividerline"
android:layout_marginTop="10dp"
android:text="#string/add_photo" />
<TextView
android:id="#+id/goCalendar_TextView"
style="#style/BtnTextGold18"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_below="#id/dividerline"
android:layout_marginTop="7dp"
android:text="#string/go_calendar" />
</RelativeLayout>
</RelativeLayout>
<include
layout="#layout/homescreen_scrollview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/layout_header_profile"
android:layout_marginTop="15dp" />
</RelativeLayout>
</android.support.design.widget.CoordinatorLayout>

You can use the Collapsing Toolbar Layout
Example Here and here
Edit: some piece of code
<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_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<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"
app:contentScrim="?attr/colorPrimary">
<ImageView
android:id="#+id/expandedImage"
android:layout_width="match_parent"
android:layout_height="200dp"
android:src="#drawable/beach_scene"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.7"
/>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin" >
</android.support.v7.widget.Toolbar>
</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"
android:background="#android:color/white"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<TextView
android:layout_width="fill_parent"
android:layout_height="wrap_content"
android:text="#string/sample_string"/>
</android.support.v4.widget.NestedScrollView>

Using a Collapse Tool Bar as João said, your code should be like this
and getting my answer as base from here
<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:clipToPadding="false">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="210dp"
android:background="#color/WHITE">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:collapsedTitleTextAppearance="#style/TextAppearance.AppCompat.Widget.ActionBar.Title.Inverse"
app:expandedTitleMarginStart="72dp"
app:expandedTitleTextAppearance="#style/TextAppearance.AppCompat.Widget.ActionBar.Title.Inverse"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<Your Content>
<android.support.v7.widget.Toolbar
android:id="#+id/app_bar"
android:layout_width="match_parent"
android:layout_height="40dp"
app:layout_collapseMode="pin" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include
layout="#layout/homescreen_scrollview"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_below="#id/layout_header_profile"
android:layout_marginTop="15dp" />
On <Your Content> is the place where you should put your string.
Sorry that I can't help more. Your Cody is a little messy and really hard to understand.
Maybe if you edit leaving only the important codes will help.
But maybe this library can help you.

How to make CardView overlap AppBarLayout

I have tried to accomplish something similar to the following layout.
There are a few things to note. The cardview that overlaps the appbar is not supposed to be a part of a nestedscrollview as I have a nestedscrollview in the xml layout. The cardview is positioned correctly but it comes just beneath the appbarlayout.

I just got the solution to this now. I did not give the CardView an elevation value before and that was wrong. I just assumed that making it come last in the CoordinatorLayout should place it on top. It works now. I have added an elevation value. Here is the code -
<xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<android.support.design.widget.AppBarLayout
android:id="#+id/appBar"
android:layout_width="match_parent"
android:layout_height="250dp"
>
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/toolbarlayout"
android:layout_width="match_parent"
android:layout_height="match_parent">
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/quotes"
android:scaleType="centerCrop"/>
<android.support.v7.widget.Toolbar
android:id="#+id/tool"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="parallax"/>
</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"
android:background="#color/colorWhite"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
/>
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_marginRight="32dp"
android:layout_marginLeft="32dp"
app:layout_anchor="#id/appBar"
app:layout_anchorGravity="bottom|center"
app:cardElevation="#dimen/small_padding"
/>
</android.support.design.widget.CoordinatorLayout>

Try with the following layout.
<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout android:layout_width="match_parent"
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="match_parent"
xmlns:app="http://schemas.android.com/apk/res-auto">
<android.support.v7.widget.Toolbar
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="200dp"
android:background="#color/colorAccent"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
app:layout_scrollFlags="scroll|enterAlways"
app:layout_collapseMode="pin">
<ImageView
android:id="#+id/toolbar_logo"
android:src="#drawable/ic_launcher"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center"/>
</android.support.v7.widget.Toolbar>
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_marginLeft="45dp"
android:layout_marginRight="45dp"
app:cardCornerRadius="8dp"
app:cardElevation="7dp"
android:layout_marginTop="150dp"
android:id="#+id/cardView">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:padding="10dp">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_weight="1"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="Photos" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:text="376" />
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_weight="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Followers"
android:layout_gravity="center"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="1769"
android:layout_gravity="center"/>
</LinearLayout>
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:orientation="vertical"
android:layout_weight="1">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Following"
android:layout_gravity="center"/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="127"
android:layout_gravity="center"/>
</LinearLayout>
</LinearLayout>
</android.support.v7.widget.CardView>
</RelativeLayout>