Develop Reference

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.

Collapsing header view while scrolling up the viewpager

I'm trying to collapse my header view while scrolling up the view pager.
In the following image relativelayout3 is the layout I want to collapse..
Something like playstore preview image collapse in app page..
I tried searching and the following line in relativelayout3, But it didnt work
app:layout_scrollFlags="scroll|enterAlways"
And this my complete 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"
xmlns:app="http://schemas.android.com/apk/res-auto">
<ScrollView
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/relativeLayout3"
app:layout_scrollFlags="scroll|enterAlways"
>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="55dp"
android:id="#+id/toolbar"
android:background="#color/cornflower_blue_two"
android:elevation="5dp">
<ImageButton
android:id="#+id/more"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true"
android:layout_marginEnd="10dp"
android:background="#null"
android:src="#drawable/ic_dots_vertical" />
<ImageButton
android:id="#+id/back"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:layout_marginEnd="5dp"
android:layout_marginStart="10dp"
android:background="#null"
android:src="#drawable/ic_arrow_left" />
</RelativeLayout>
<ss.com.bannerslider.views.BannerSlider
android:id="#+id/slider"
android:layout_width="match_parent"
android:layout_height="250dp"
android:background="#color/blue"
android:layout_below="#id/toolbar"
/>
</RelativeLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_alignParentStart="true"
android:layout_below="#+id/relativeLayout3">
<TextView
android:id="#+id/product"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="10dp"
android:text="Blah Blah"
android:textColor="#color/dark_gray"
android:textSize="25sp"
android:textStyle="bold" />
<TextView
android:id="#+id/brand"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignStart="#+id/product"
android:layout_below="#+id/product"
android:text="Blah inc."
android:textSize="20sp"
android:textStyle="bold" />
<TextView
android:id="#+id/ratings"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignBaseline="#+id/brand"
android:layout_alignBottom="#+id/brand"
android:layout_marginStart="10dp"
android:layout_toEndOf="#+id/brand"
android:background="#color/ratings"
android:paddingEnd="10dp"
android:paddingStart="10dp"
android:text="4.7"
android:textColor="#color/white"
android:textSize="20sp"
android:textStyle="bold" />
<android.support.design.widget.TabLayout
android:id="#+id/tabLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_below="#+id/brand"
android:layout_marginTop="14dp"
app:tabGravity="fill"
app:tabMode="fixed" />
<android.support.v4.view.ViewPager
android:id="#+id/pager"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_below="#+id/tabLayout" />
</RelativeLayout>
</RelativeLayout>
</ScrollView>
</RelativeLayout>

Consider using CollapsingToolbarLayout. Please refer Collapsing Toolbar Example.

<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="250dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#drawable/cartoon"
android:scaleType="centerCrop"
app:layout_scrollFlags="scroll|enterAlways|enterAlwaysCollapsed"
app:layout_collapseMode="parallax" />
<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.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="#ffe5e5"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical"
android:paddingTop="10dp">
<include layout="#layout/card_layout" />
<include layout="#layout/card_layout" />
<include layout="#layout/card_layout" />
</LinearLayout>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
Output
More Reference

How to handle HorizontalScrollView's input inside NestedScrollView?

I have a CoordinatorLayout, inside of it: AppBarLayout, CollapsingToolbarLayout (ImageView and toolbar), and NestedScrollView.
Inside NestedScrollView I have HorizontalScrollView. When I horizontally scroll the HorizontallScrollView my NestedScrollView catches the input as vertical scroll and only once on four times the horizontal scroll works fine. How can I resolve it?
I've got no problems with normal ScrollView.
Here is my XML code:
<?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/coordinator_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<android.support.design.widget.AppBarLayout
android:id="#+id/main.appbar"
android:layout_width="match_parent"
android:layout_height="230dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
>
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/main.collapsing"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginEnd="64dp"
app:expandedTitleMarginStart="48dp"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
>
<ImageView
android:id="#+id/main.backdrop"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
android:src="#drawable/test_primi"
app:layout_collapseMode="parallax"
/>
<android.support.v7.widget.Toolbar
android:id="#+id/main.toolbar"
android:layout_width="match_parent"
android:layout_height="120dp"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed"
>
<LinearLayout
android:id="#+id/linear_layout_titolo_toolbar_primi"
android:layout_width="match_parent"
android:layout_height="56dp"
android:orientation="horizontal"
app:layout_scrollFlags="scroll|enterAlwaysCollapsed"
>
<ImageView
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="center"
android:onClick="backToRicette"
android:padding="8dp"
android:src="#drawable/icona_freccia_back_bianca"
/>
<TextView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginLeft="18dp"
android:fontFamily="#font/roboto_medium"
android:gravity="start|center"
android:text="Primi"
android:textColor="#color/titoliToolbar"
android:textSize="#dimen/dimensioneTitoliToolbar"
/>
</LinearLayout>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="56dp"
android:layout_below="#id/linear_layout_titolo_toolbar_primi"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:background="#drawable/background_layout_bordi_radius"
android:elevation="2dp"
>
<ImageView
android:id="#+id/icona_search_action_bar"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_alignParentEnd="true"
android:layout_centerVertical="true"
android:layout_marginEnd="11dp"
android:src="#drawable/ic_search_black_96"
/>
<EditText
android:id="#+id/edit_text_cerca_ricette"
android:layout_width="wrap_content"
android:layout_height="40dp"
android:layout_centerVertical="true"
android:background="#android:color/transparent"
android:ems="10"
android:fontFamily="#font/roboto_medium"
android:hint="Cerca"
android:inputType="textPersonName"
android:paddingLeft="8dp"
android:textColor="#color/corpoText"
android:textColorHint="#color/hintText"
android:textSize="20dp"
/>
</RelativeLayout>
</RelativeLayout>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/nested_scroll_view_ricette_primi"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:addStatesFromChildren="false"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/body"
android:orientation="vertical"
>
<LinearLayout
android:id="#+id/linear_layout_ricette_top_10"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginBottom="12dp"
android:layout_marginLeft="8dp"
android:layout_marginRight="8dp"
android:layout_marginTop="8dp"
android:background="#drawable/background_layout_bordi_radius"
android:elevation="2dp"
android:orientation="vertical"
>
<TextView
android:id="#+id/text_view_top_10_ricette"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginBottom="8dp"
android:layout_marginLeft="8dp"
android:layout_marginTop="8dp"
android:fontFamily="#font/roboto_medium"
android:text="Top 10 Primi"
android:textColor="#color/titoli"
android:textSize="#dimen/dimensioneTitoli"
/>
<HorizontalScrollView
android:id="#+id/horizontal_scroll_view_top_10_ricette"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:nestedScrollingEnabled="false"
android:paddingBottom="8dp"
android:paddingTop="8dp"
android:scrollbarAlwaysDrawVerticalTrack="false"
android:scrollbars="none"
>
<!-- Here is an horizontal linear layout with 10 images. -->
</HorizontalScrollView>
</LinearLayout>
</LinearLayout>
</android.support.v4.widget.NestedScrollView>

How to stop the overflow on to the appbar?

I'm trying to implement the CoordinatorLayout. But when i try to apply the below code to define an XML file it is also overlapping the appbar. What should i do to stop the overlap on appbar?
Here is an 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:layout_width="match_parent"
android:layout_height="match_parent"
tools:ignore="RtlHardcoded">
<android.support.design.widget.AppBarLayout
android:id="#+id/main.appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/main.collapsing"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
<ImageView
android:id="#+id/main.imageview.placeholder"
android:layout_width="match_parent"
android:layout_height="300dp"
android:scaleType="centerCrop"
android:src="#drawable/quila2"
android:tint="#11000000"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.9" />
<FrameLayout
android:id="#+id/main.framelayout.title"
android:layout_width="match_parent"
android:layout_height="100dp"
android:layout_gravity="bottom|center_horizontal"
android:background="#00838F"
android:orientation="vertical"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.3">
<LinearLayout
android:id="#+id/main.linearlayout.title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center"
android:orientation="vertical">
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:gravity="bottom|center"
android:text="Subbu kummithi"
android:textColor="#android:color/white"
android:textSize="30sp" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="center_horizontal"
android:layout_marginTop="4dp"
android:text="#string/role_name"
android:textColor="#android:color/white" />
</LinearLayout>
</FrameLayout>
</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:scrollbars="none"
app:behavior_overlapTop="30dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.CardView
android:id="#+id/card_id"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="8dp"
app:cardElevation="8dp"
app:contentPadding="16dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:lineSpacingExtra="8dp"
android:text="This is for new activity This is for new activity This is for new activity"
android:textSize="18sp" />
</android.support.v7.widget.CardView>
</android.support.v4.widget.NestedScrollView>
<android.support.v7.widget.Toolbar
android:id="#+id/main.toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="#00838F"
app:layout_anchor="#id/main.framelayout.title"
app:theme="#style/ThemeOverlay.AppCompat.Dark"
app:title="">
<LinearLayout
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:orientation="horizontal">
<Space
android:layout_width="#dimen/image_final_width"
android:layout_height="#dimen/image_final_width" />
<TextView
android:id="#+id/main.textview.title"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_marginLeft="8dp"
android:gravity="center_vertical"
android:text="Welcome Mr. Subbu"
android:textColor="#android:color/white"
android:textSize="20sp" />
</LinearLayout>
</android.support.v7.widget.Toolbar>
<de.hdodenhof.circleimageview.CircleImageView
android:layout_width="#dimen/image_width"
android:layout_height="#dimen/image_width"
android:layout_gravity="center_horizontal"
android:src="#drawable/quila"
app:border_color="#android:color/white"
app:border_width="2dp"
app:finalHeight="#dimen/image_final_width"
app:finalYPosition="2dp"
app:layout_behavior="com.realmilk.activities.AvatarImageBehavior"
app:startHeight="2dp"
app:startToolbarPosition="2dp"
app:startXPosition="2dp" />
</android.support.design.widget.CoordinatorLayout>
And Here is the output when i run the above code:
Any ideas?

try add attribute android:fitsSystemWindows="true" in your 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"
tools:ignore="RtlHardcoded">
.....

Set android:fitsSystemWindows="true" in CoordinatorLayout, AppBarLayout and CollapsingToolbarLayout to reserve space at top.
If you want the background image starting behind the transparent status bar set android:fitsSystemWindows="true" in the main.imageview.placeholder too.

Recyclerview does not follow the collapsing toolbar

I created a collapsing toolbar and placed a recyclerview below it but when I run the app the cardviews inside the recycleview overlaps the image of the collapsing toolbar .How can I fix this
MainActivity.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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
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"
app:contentScrim="?attr/colorPrimary"
app:expandedTitleMarginStart="48dp"
app:expandedTitleMarginEnd="64dp"
android:fitsSystemWindows="true">
<ImageView
android:id="#+id/image"
android:layout_width="match_parent"
android:layout_height="wrap_content"
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.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/rv"
android:orientation="vertical"
android:clipToPadding="false"
android:layout_marginTop="?attr/actionBarSize"
android:layout_below="#+id/image"
/>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
app:layout_anchor="#id/app_bar_layout"
style="#style/fab"
app:theme="#style/ThemeOverlay.AppCompat.Light"
app:layout_anchorGravity="bottom|right|end"
/>
</android.support.design.widget.CoordinatorLayout>
Item.xml (layout containing the cardview inside the recyclerview)
<android.support.v7.widget.CardView
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.co nbm/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_marginTop="6dp"
app:cardElevation="6dp"
android:padding="6dp"
android:id="#+id/cv">
<RelativeLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.co nbm/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="180dp"
android:background="#4682b4"
android:padding="16dp"
>
<ImageView
android:layout_width="100dp"
android:layout_height="100dp"
android:scaleType="centerCrop"
android:layout_alignParentLeft="true"
android:layout_alignParentTop="true"
android:layout_marginRight="16dp"
android:src="#drawable/li"
android:id="#+id/imageView" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView"
android:text="Aayush Chaubey"
android:layout_alignParentTop="true"
android:layout_toRightOf="#+id/imageView"
android:textColor="#ffffff"
android:textSize="30sp"
/>
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:id="#+id/textView2"
android:text="app developer"
android:textColor="#ffffff"
android:textSize="25sp"
android:layout_centerVertical="true"
android:layout_alignLeft="#+id/textView"
android:layout_alignStart="#+id/textView" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Show Capsule"
android:textColor="#00bfff"
android:textSize="20sp"
android:layout_marginBottom="10dp"
android:layout_marginRight="10dp"
android:id="#+id/textView3"
android:layout_alignParentBottom="true"
android:layout_alignParentRight="true"
android:layout_alignParentEnd="true" />
</RelativeLayout>
</android.support.v7.widget.CardView>

Well, I think you need to add this line app:layout_behavior="#string/appbar_scrolling_view_behavior"
in your RecyclerView
Eg:
<android.support.v7.widget.RecyclerView
android:id="#+id/recyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
Most importantly you will also need to add
xmlns:app="http://schemas.android.com/apk/res-auto"
in coordinatorLayout tag.
Another point: Make sure you're using com.android.support:recyclerview-v7:22.2.0 with prior version it might not work properly
Hope it helps.