Develop Reference

collapsing toolbar layout won't collapse

I have a collapsing toolbar layout that has 2 issues with it:
1) it is static and does not collapse and I can't find the reason why
2) the last row in the recyclerview is being shown half way offscreen, I think it should be fixed one the collapsing is fixed?
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:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".Controllers.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/AppBarLayout"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="scroll|snap|exitUntilCollapsed"
app:contentScrim="#color/colorPrimary"
app:title="Hero Title">
<ImageView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#000000" />
<TextView
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:text="Hero Title"
android:textStyle="bold"
android:textSize="20dp"
android:textColor="#ffffff"/>
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="150dp"
app:popupTheme="#style/ThemeOverlay.AppCompat.Dark">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/herosRecyclerView"
android:layout_width="395dp"
android:layout_height="715dp"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
app:layout_constraintBottom_toBottomOf="parent"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"/>
</android.support.design.widget.CoordinatorLayout>
and here is an image of what I mean by half offscreen:
https://imgur.com/Fz8TmKK

Please try this. It will work.
<?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:background="#color/colorWhite"
tools:context=".Controllers.MainActivity">
<android.support.design.widget.AppBarLayout
android:id="#+id/AppBarLayout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="150dp"
android:textAlignment="center"
app:contentScrim="#color/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:title="Hero Title">
<ImageView
android:layout_width="match_parent"
android:layout_height="150dp"
android:background="#000000"
app:layout_collapseMode="parallax"
app:layout_collapseParallaxMultiplier="0.7" />
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Dark">
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.RecyclerView
android:id="#+id/herosRecyclerView"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
</android.support.design.widget.CoordinatorLayout>

Please add this to your ImageView:
app:layout_collapseMode="parallax"

The code will look like this :
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.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:fitsSystemWindows="true"
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/appbar"
android:fitsSystemWindows="true"
android:layout_height="192dp"
android:layout_width="match_parent">
<com.google.android.material.appbar.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:toolbarId="#+id/toolbar"
app:title="#string/app_name"
app:layout_scrollFlags="snap|scroll|exitUntilCollapsed"
app:layout_scrollInterpolator="#android:anim/decelerate_interpolator"
app:contentScrim="?attr/colorPrimary">
<ImageView
android:id="#+id/app_bar_image"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:src="#drawable/ss"
android:scaleType="centerCrop" />
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar"
android:layout_height="?attr/actionBarSize"
app:collapseIcon="#drawable/ic_baseline_menu_24"
app:navigationIcon="#drawable/ic_baseline_menu_24"
android:layout_width="match_parent"
app:layout_collapseMode="pin"
app:menu="#menu/demo_menu">
</androidx.appcompat.widget.Toolbar>
</com.google.android.material.appbar.CollapsingToolbarLayout>
</com.google.android.material.appbar.AppBarLayout>
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="com.google.android.material.appbar.AppBarLayout$ScrollingViewBehavior">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:padding="12dp"
android:text="#string/ipsum">
</TextView>
</androidx.core.widget.NestedScrollView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
for full tutorial visit:
https://bedevelopers.tech/collapsing-toolbar-android-example-using-android-studio/

Android CoordinatorLayout and nested fragment issue

I've a main activity with this layout:
<?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:layout_below="#id/toolbar_container">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:fitsSystemWindows="true"
android:elevation="0dp"
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"
android:fitsSystemWindows="true"
app:titleEnabled="false"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways">
<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/ThemeOverlay.AppCompat.Light">
<ImageView
android:layout_gravity="center"
app:srcCompat="#drawable/ic_logo_toolbar"
android:layout_width="100dp"
android:layout_height="?attr/actionBarSize" />
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v4.widget.NestedScrollView
android:id="#+id/myScrollingContent"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:fillViewport="true">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:id="#+id/container_RL"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</FrameLayout>
</android.support.v4.widget.NestedScrollView>
<com.roughike.bottombar.BottomBar
android:id="#+id/bottom_bar"
android:layout_width="match_parent"
android:layout_height="#dimen/bottom_bar_height"
android:layout_gravity="bottom"
android:background="#color/white"
app:bb_activeTabColor="#color/colorPrimary"
app:bb_behavior="shifting|shy"
app:bb_inActiveTabColor="#color/black_54"
app:bb_tabXmlResource="#xml/bottom_bar" />
</android.support.design.widget.CoordinatorLayout>
I replace the container_RL with:
detailsFragment = DetailsFragment.newInstance(storeId);
getSupportFragmentManager().beginTransaction().replace(R.id.container_RL, detailsFragment).commit();
And now works fine. The toolbar and the bottombar moves correctly with the scroll behaviour.
But if I add a FloatingActionMenu into the fragment:
<?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">
<RelativeLayout
android:id="#+id/inner_container_RL"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:background="#color/windowBackground">
<in.srain.cube.views.GridViewWithHeaderAndFooter
android:id="#+id/gridView"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:gravity="center"
android:numColumns="2"
android:orientation="horizontal" />
</RelativeLayout>
<com.github.clans.fab.FloatingActionMenu
android:id="#+id/menu_fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:elevation="4dp"
android:layout_marginRight="8dp"
android:layout_marginBottom="8dp"
app:layout_behavior="com.test.MoveUpwardBehaviour"
app:layout_anchor="#id/gridView"
app:layout_anchorGravity="bottom|right|end"
app:menu_colorNormal="#color/colorPrimary"
app:menu_colorPressed="#2272CD"
app:menu_colorRipple="#62B2FF">
<com.github.clans.fab.FloatingActionButton
android:id="#+id/fab1_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
app:fab_label="F<b1"
android:tint="#color/white"
android:src="#drawable/ic_fab1"
style="#style/MenuButtonsSmall" />
<com.github.clans.fab.FloatingActionButton
android:id="#+id/fab2_item"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:tint="#color/white"
app:fab_label="Fab2"
android:src="#drawable/ic_fab2"
style="#style/MenuButtonsSmall" />
</com.github.clans.fab.FloatingActionMenu>
</android.support.design.widget.CoordinatorLayout>
The FABMenu is hidden behind the bottombar. I would like to move the FABMenu above the bottombar, then when the bottombar moves with scroll the FABMenu scrolling to down.
But the FABMenu is a child of fragment, how can I handle this behaviour?

Custom TextView with alpha background in CollapsingToolbar

I'd like to create something like this.
But i don't know how to make textview with alpha background.
I try to put 1 relative layout to CollapsingToolbarLayout. But it doesn't work when I collapse it.
Here is my current layout
<?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:context="com.iantsu.projectm.ui.activity.RecipeActivity">
<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/collapsingLayout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true"
app:contentScrim="?attr/colorPrimary"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ImageView
android:id="#+id/panelImage"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scaleType="fitXY"
app:layout_collapseMode="parallax"
/>
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
>
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
>
<TextView
android:id="#+id/title"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:textSize="24dp"
android:text="Title here"
app:layout_collapseParallaxMultiplier="0.7"
/>
</LinearLayout>
</RelativeLayout>
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
android:title=""
app:popupTheme="#style/AppTheme.PopupOverlay" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<include layout="#layout/content_recipe" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_margin="#dimen/fab_margin"
android:src="#android:drawable/ic_dialog_email"
app:layout_anchor="#id/app_bar"
app:layout_anchorGravity="bottom|end" />
</android.support.design.widget.CoordinatorLayout>

Can't see the entire text with a nestedscrollview and cardview

I use a coordinator layout, with a collapsing toolbar and a nestedscrollview.
Putting Lorem Ipsum code, I can't see the end of the text, because I can scroll, but not until the end.
And when I put more text, I can scroll further, but still not until the end.
Here is my example :
The last line isn't the last in my code.
My 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"
android:fitsSystemWindows="true"
tools:context="fr.djey.secretapp.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapse_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:layout_width="wrap_content"
android:layout_height="wrap_content"
android:src="#drawable/image"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax"
android:scaleType="centerCrop"/>
<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"
android:layout_gravity="fill_vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:id="#+id/description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/lorem_ipsum"
android:textColor="#android:color/black"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</android.support.v4.widget.NestedScrollView>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
Maybe that's because of the emulator?
EDIT :
Reply for the Madhur answer :
I've tested to put a frame instead of the nestedscrollview and replace with java this frame on navigationview item click. It replaces the frame here :
<?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:context="fr.djey.secretapp.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/AppTheme.AppBarOverlay">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapse_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/collapsing_image"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fitsSystemWindows="true"
app:layout_collapseMode="parallax"
android:scaleType="centerCrop"
android:src="#drawable/welcome"/>
<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>
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/content_frame">
</FrameLayout>
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/fab_margin"
android:src="#android:drawable/ic_dialog_email" />
</android.support.design.widget.CoordinatorLayout>
by this fragment :
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools"
android:layout_gravity="fill_vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
tools:context="fr.djey.secretapp.MainActivity">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="BIENVENUE"
android:textColor="#android:color/black"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</android.support.v4.widget.NestedScrollView>
But as you can see, the nestedscrollview doesn't work doing like that :

Finally I've done like that :
putting the nestedscrollview in the main and a frame inside:
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
xmlns:tools="http://schemas.android.com/tools"
android:layout_gravity="fill_vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto">
<FrameLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/content_frame">
</FrameLayout>
</android.support.v4.widget.NestedScrollView>
Like that I can see more text, but not until the end. So I put a margin in the cardview inside the fragment : android:layout_marginBottom="80dp"

use this in for eg main.xml layout
<android.support.v4.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_gravity="fill_vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<android.support.v7.widget.CardView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_margin="16dp">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:orientation="vertical"
android:padding="16dp">
<TextView
android:id="#+id/description"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:text="#string/lorem_ipsum"
android:textColor="#android:color/black"/>
</LinearLayout>
</android.support.v7.widget.CardView>
</android.support.v4.widget.NestedScrollView>
and atlast inlcude this in your xml
<include layout="#layout/main"/>

Android - View hidden behind AppBarLayout

I have the problem that my RecyclerView is cut off behind the AppBarLayout
Here is my XML
<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"
tools:context=".activity.MainActivity">
<android.support.design.widget.CoordinatorLayout
android:id="#+id/root_coordinator"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.design.widget.AppBarLayout
android:id="#+id/appbar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:fitsSystemWindows="true">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_tool_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:color="#android:color/white"
app:contentScrim="#color/blue_grey_900"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<ProgressBar
android:id="#+id/loadingProgressBar"
android:layout_width="wrap_content"
android:layout_height="wrap_content" />
<android.support.v7.widget.Toolbar
android:id="#+id/toolBar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="pin"
app:layout_scrollFlags="snap|enterAlways"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light" />
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
android:id="#+id/rvList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical" />
<android.support.design.widget.FloatingActionButton
android:id="#+id/fab"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_gravity="bottom|end"
android:layout_margin="#dimen/activity_vertical_margin"
android:src="#android:drawable/ic_menu_share"
app:layout_behavior="irisrecognition.example.com.irisrecognition.adapter.ScrollAwareFABBehavior" />
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation_drawer"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:menu="#menu/menu_main" />

You forgot to specify the RecyclerView's layout_behavior. Add this line
app:layout_behavior="#string/appbar_scrolling_view_behavior"
to your RecyclerView's XML:
<android.support.v7.widget.RecyclerView
android:id="#+id/rvList"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbars="vertical"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />