CollapsingToolbarLayout doesn't collapse anything - android

I want to hide and show the toolbar when I scroll down and up in a recycler view fragment, but the CollapsingToolbarLayout doesn't do what it's supposed to do.
First I tried to do it with just the coordinator layout and it worked, but it's not as fluid as the collapsing toolbar layout (when it works that is)
Is it because the recycler view is in a fragment? What is the problem exactly?
Main layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.v4.widget.DrawerLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/drawer_layout"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:elevation="7dp">
<android.support.design.widget.CoordinatorLayout
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:layout_height="wrap_content"
tools:context="com.github.mpivchev.app.activities.MainActivity">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:elevation="2dp"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<Spinner
android:id="#+id/spinner"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:layout_marginTop="8dp"
android:gravity="start"
android:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:spinnerMode="dialog" />
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentStart="true"
android:layout_centerVertical="true"
android:fontFamily="#font/roboto"
android:paddingTop="18dp"
android:text="TestString" />
</RelativeLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/fragment_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior" >
</FrameLayout>
</android.support.design.widget.CoordinatorLayout>
<android.support.design.widget.NavigationView
android:id="#+id/navigation"
android:layout_width="wrap_content"
android:layout_height="match_parent"
android:layout_gravity="start"
app:headerLayout="#layout/nav_header_main"
app:menu="#menu/main_drawer" />
Part of fragment layout:
<?xml version="1.0" encoding="utf-8"?>
<android.support.constraint.ConstraintLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:scrollbars="vertical"
app:layout_constraintEnd_toEndOf="parent"
app:layout_constraintStart_toStartOf="parent"
app:layout_constraintTop_toTopOf="parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
...
</android.support.constraint.ConstraintLayout>


Your toolbar doesn't have a defined collapseMode, so there's no instruction for how it should behave. Add app:collapseMode="pin" to your Toolbar xml.

Related

How to hide toolbar when scrolling on Fragment

I have a main activity:
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:id="#+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent">
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/appBar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?attr/colorPrimary"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<include layout="#layout/toolbar" />
</com.google.android.material.appbar.AppBarLayout>
<FrameLayout
android:id="#+id/frameInicio"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/adView"
android:layout_alignParentStart="true"
android:layout_marginTop="?android:attr/actionBarSize"
android:orientation="horizontal" />
<com.google.android.gms.ads.AdView xmlns:ads="http://schemas.android.com/apk/res-auto"
android:id="#+id/adView"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_above="#+id/navigation"
android:layout_centerInParent="true"
android:layout_gravity="center"
android:gravity="center"
android:visibility="visible"
ads:adSize="SMART_BANNER"
ads:adUnitId="example" />
<com.ittianyu.bottomnavigationviewex.BottomNavigationViewEx
android:id="#+id/navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_alignParentBottom="true"
android:background="?android:attr/windowBackground"
app:menu="#menu/bottom_navigation" />
</RelativeLayout>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
In FrameLayout "frameInicio" I load a fragment with this:
<RelativeLayout
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="#+id/swipeApuestas"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerApuestas"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout>
</RelativeLayout>
I want when scroll in RecyclerView in Fragment, Toolbar of main_activity_layout, hides. How can I do?
I tried with recycler in the same activity, but i don't wanna do this, I want with diferent fragment, because I have a bottom navigation to control diferent fragment.
Thank you so much.

I have just faced your problem but the only difference is I'm scrolling within listview. Anyway I think that solution can be applied on your recyclerview too.
first this is how your fragment.xml should look like
<androidx.coordinatorlayout.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">
<com.google.android.material.appbar.AppBarLayout
android:id="#+id/app_bar_layout"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<androidx.appcompat.widget.Toolbar
android:id="#+id/tool_bar"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:layout_scrollFlags="enterAlways|scroll|snap">
</androidx.appcompat.widget.Toolbar>
</com.google.android.material.appbar.AppBarLayout>
<androidx.core.widget.NestedScrollView
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fillViewport="true"
app:layout_behavior="#string/appbar_scrolling_view_behavior">
<androidx.swiperefreshlayout.widget.SwipeRefreshLayout
android:id="#+id/swipeApuestas"
android:layout_width="match_parent"
android:layout_height="match_parent">
<androidx.recyclerview.widget.RecyclerView
android:id="#+id/recyclerApuestas"
android:layout_width="match_parent"
android:layout_height="match_parent" />
</androidx.swiperefreshlayout.widget.SwipeRefreshLayout> </androidx.core.widget.NestedScrollView>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
don't forget to initialize the toolbar within the fragment

Try this:
<?xml version="1.0" encoding="utf-8"?>
<androidx.coordinatorlayout.widget.CoordinatorLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android:gravity="center"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".DashboardActivity">
<androidx.appcompat.widget.Toolbar
android:id="#+id/toolbar_main"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:background="?attr/colorPrimary"
app:layout_scrollFlags="scroll|enterAlways"
app:popupTheme="#style/AppTheme.PopupOverlay"
/>
<FrameLayout android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_weight="1"/>
<com.google.android.material.bottomnavigation.BottomNavigationView
android:layout_gravity="bottom"
android:id="#+id/navigation"
app:labelVisibilityMode="labeled"
android:background="?android:attr/windowBackground"
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:menu="#menu/menu_nav"/>
</androidx.coordinatorlayout.widget.CoordinatorLayout>
For your Main Activity (not fragment)

Last item of RecyclerView gets hidden when using AppBarLayout

 At the second picture, items are scrolled till the bottom of the screen, part of the item is hidden behind BottomNavigationView.
activity_main.xml:
<?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"
android:id="#+id/container"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".MainActivity"
android:orientation="vertical">
<FrameLayout
android:id="#+id/main_container"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_above="#+id/navigation">
</FrameLayout>
<android.support.design.widget.BottomNavigationView
android:id="#+id/navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="?android:attr/windowBackground"
android:layout_alignParentBottom="true"
app:menu="#menu/navigation"
/>
</RelativeLayout>
activity_dynamic_recycler.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.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="110dp"
android:id="#+id/appbar"
app:layout_scrollFlags="scroll|exitUntilCollapsed">
<android.support.design.widget.CollapsingToolbarLayout
android:layout_width="match_parent"
android:layout_height="match_parent"
android:id="#+id/collapsing_toolbar"
app:layout_scrollFlags="scroll|exitUntilCollapsed"
app:contentScrim="?attr/colorPrimary"
app:title="#string/title_places"
app:expandedTitleMarginStart="72dp"
app:expandedTitleTextAppearance="#style/ExpandedAppbar"
app:collapsedTitleTextAppearance="#style/CollapsedAppbar">
<LinearLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/header_text_layout"
android:background="?attr/colorPrimary"
android:layout_gravity="bottom"
android:gravity="center_vertical"
android:paddingLeft="72dp"
android:paddingRight="10dp"
android:paddingTop="5dp"
android:paddingBottom="5dp"
android:orientation="vertical">
<TextView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/subtitle"
android:textColor="#android:color/darker_gray"
android:textSize="16sp"
android:text="#string/my_location"/>
</LinearLayout>
<android.support.v7.widget.Toolbar
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
android:id="#+id/fragment_places_toolbar"
app:layout_collapseMode="pin"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"/>
</android.support.design.widget.CollapsingToolbarLayout>
</android.support.design.widget.AppBarLayout>
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="match_parent"
android:layout_width="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:id="#+id/recyclerView">
</android.support.v7.widget.RecyclerView>
</android.support.design.widget.CoordinatorLayout>
Here are the images:
Tried adding margin/padding to recyclerview - did not help. Did not find cases of AppbarLayout and NavigationView with similar problem. Any help would be appreciated.

You can try doing this by separating things down.
activity_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"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:fitsSystemWindows="true">
<android.support.design.widget.AppBarLayout
android:layout_width="match_parent"
android:layout_height="wrap_content"
app:theme="#style/ThemeOverlay.AppCompat.Dark">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_scrollFlags="scroll|enterAlways"
app:contentInsetStart="#dimen/fab_margin"/>
</android.support.design.widget.AppBarLayout>
<FrameLayout
android:id="#+id/content"
android:layout_width="match_parent"
android:layout_height="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"/>
<android.support.design.widget.BottomNavigationView
android:id="#+id/navigation"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:layout_gravity="bottom"
android:background="?android:attr/windowBackground"
app:menu="#menu/navigation" />
</android.support.design.widget.CoordinatorLayout>
activity_dynamic_recycler.xml
<?xml version="1.0" encoding="utf-8"?>
<FrameLayout 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_marginBottom="?attr/actionBarSize"
xmlns:tool="http://schemas.android.com/tools"
android:orientation="vertical"
tool:context=".MainActivity">
<android.support.v7.widget.RecyclerView
android:id="#+id/theory_list"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:scrollbarStyle="outsideOverlay"
android:divider="#color/list_divider"
android:dividerHeight="1dp"
android:listSelector="#drawable/list_row_selector"
android:paddingBottom="48dp"
android:clipToPadding="false" />
</FrameLayout>

Set RecyclerView layout_marginBottom="110dp" because your AppBarLayout layout_height="110dp".
<android.support.v7.widget.RecyclerView
xmlns:android="http://schemas.android.com/apk/res/android"
android:layout_height="match_parent"
android:layout_width="match_parent"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:id="#+id/recyclerView"
android:layout_marginBottom="110dp">
</android.support.v7.widget.RecyclerView>

According to Google Design Spec bottom navigation bar should hide on scrolling
Implementation : https://www.stackoverflow.com/a/44778453

Using Coordinator layout for creating Collapsing Toolbar and Recycler View

I have been trying to use Coordinator layout to create a collapsing toolbar and include a layout using Recycler view, but the toolbar is not collapsing. Could someone point out what i'm doing wrong. Thanks.
Here is the code:
activity_main.xml
<?xml version="1.0" encoding="utf-8"?>
<android.support.design.widget.CoordinatorLayout
xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
xmlns:tools="http://schemas.android.com/tools"
android: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:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar"
android:elevation="4dp">
<android.support.design.widget.CollapsingToolbarLayout
android:id="#+id/collapsing_toolbar"
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/header"
android:layout_width="match_parent"
android:layout_height="100dp"
android:background="#205052"
android:fitsSystemWindows="true"
android:scaleType="centerCrop"
app:layout_collapseMode="parallax" />
<android.support.v7.widget.Toolbar
android:id="#+id/anim_toolbar"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize"
app:layout_collapseMode="parallax"
app:popupTheme="#style/ThemeOverlay.AppCompat.Light">
<TextView
android:id="#+id/toolbar_title"
android:layout_width="wrap_content"
android:layout_height="wrap_content"
android:fontFamily="sans-serif-light"
android:text="hello"
android:gravity="center"
android:singleLine="true"
android:textColor="#android:color/white"
android:textSize="18sp" />
</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:layout_gravity = "fill_vertical"
android:layout_marginBott`enter code here`om="?attr/actionBarSize"
app:layout_behavior = "#string/appbar_scrolling_view_behavior">
<include layout="#layout/recycler"/>
</android.support.v4.widget.NestedScrollView>
</android.support.design.widget.CoordinatorLayout>
recycler.xml
<?xml version="1.0" encoding="utf-8"?>
<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:app="http://schemas.android.com/apk/res-auto"
android:orientation="vertical"
android:layout_width="match_parent"
android:layout_height="match_parent">
<android.support.v7.widget.RecyclerView
android:id="#+id/fragment_horizontal_recycler_view"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/fragment_horizontal_recycler_view2">
</android.support.v7.widget.RecyclerView>
<android.support.v7.widget.RecyclerView
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:id="#+id/fragment_horizontal_recycler_view3"
>
</android.support.v7.widget.RecyclerView>
</LinearLayout>

Try setting android:layout_height="wrap_content" for <android.support.design.widget.CollapsingToolbarLayout />

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?

Android: How to show toolbar when the list is scrolled to top?

I have a problem with toolbar, when I scroll up, the toolbar hide, and when I scroll down, the toolbar show immediately. I want to scroll to top of RecyclerView, the toolbar will show, how can I do it?
Thanks!!!!
<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/dn_main_container"
android:background="#android:color/white"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context=".phone.activity.ActivityPerspective">
<android.support.v7.widget.RecyclerView
android:id="#+id/listView"
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:background="#android:color/white"
android:layout_marginTop="-56dp"
android:layout_width="match_parent"
android:layout_height="match_parent"/>
<android.support.design.widget.AppBarLayout
app:elevation="0dp"
android:background="#android:color/transparent"
android:fitsSystemWindows="true"
android:layout_width="match_parent"
android:layout_height="wrap_content">
<android.support.v7.widget.Toolbar
android:id="#+id/toolbar"
app:contentInsetStartWithNavigation="0dp"
android:elevation="0dp"
android:layout_width="match_parent"
android:layout_height="wrap_content"
android:background="#android:color/transparent">
<LinearLayout
android:orientation="horizontal"
android:layout_width="match_parent"
android:layout_height="?attr/actionBarSize">
<RelativeLayout
android:layout_gravity="center_vertical"
android:layout_weight="1"
android:layout_width="0dp"
android:layout_height="wrap_content">
<TextView
android:id="#+id/titleView"
android:text="Author"
android:textSize="9pt"
android:textColor="#4D4D4D"
android:layout_width="match_parent"
android:layout_height="wrap_content" />
</RelativeLayout>
<ImageView
android:id="#+id/search"
android:src="#drawable/search_dark"
android:paddingTop="19dp"
android:paddingBottom="19dp"
android:layout_marginLeft="6dp"
android:layout_width="?attr/actionBarSize"
android:layout_height="?attr/actionBarSize" />
</LinearLayout>
</android.support.v7.widget.Toolbar>
</android.support.design.widget.AppBarLayout>

You should add app:layout_scrollFlags="scroll|enterAlways" in child(in your case <android.support.v7.widget.Toolbar>) of <android.support.design.widget.AppBarLayout> to achieve on scroll down hide app bar and on scroll top show app bar.

Use below format code this will work for you what you want.
<?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/activity_notice"
android:orientation="vertical"
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:orientation="vertical"
android:fitsSystemWindows="true"
android:theme="#style/ThemeOverlay.AppCompat.Dark.ActionBar">
<include
android:id="#+id/toolbar"
layout="#layout/toolbar" />
</android.support.design.widget.AppBarLayout>
<FrameLayout
app:layout_behavior="#string/appbar_scrolling_view_behavior"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:orientation="vertical">
<android.support.v7.widget.RecyclerView
android:id="#+id/recycler"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:clipToPadding="false"
app:layout_behavior="#string/appbar_scrolling_view_behavior" />
</FrameLayout>
Toolbar toolbar = (Toolbar)findViewById(R.id.toolbar_help);
setSupportActionBar(toolbar);

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