CollapsingToolbarLayout without shadow in expanded state

Question

CollapsingToolbarLayout from appcompat shows shadow in collapsed state, but when expanded (or expanding in process) shadow disappear

My example code https://github.com/NaikSoftware/CollapsingToolbarWithImageAndTabs/tree/master/app

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:id="@+id/main_content"
android:layout_width="match_parent"
android:layout_height="match_parent"
tools:context="ua.naiksoftware.hidetabs.MainActivity">

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    android:theme="@style/AppTheme.AppBarOverlay">

    <android.support.design.widget.CollapsingToolbarLayout
        android:layout_width="match_parent"
        android:layout_height="@dimen/toolbar_plus_tabs"
        app:contentScrim="@android:color/transparent"
        app:layout_scrollFlags="scroll|exitUntilCollapsed|snap|enterAlways"
        app:titleEnabled="false"
        app:toolbarId="@+id/toolbar_wrapper">

        <ImageView
            android:id="@+id/appbar_background"
            android:layout_width="match_parent"
            android:layout_height="match_parent"
            android:scaleType="centerCrop"
            android:src="@drawable/header_back"
            app:layout_collapseMode="parallax"/>

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar"
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_gravity="top"
            android:background="@android:color/transparent"
            app:popupTheme="@style/AppTheme.PopupOverlay" />

        <android.support.v7.widget.Toolbar
            android:id="@+id/toolbar_wrapper"
            android:layout_width="match_parent"
            android:layout_gravity="bottom"
            android:background="@android:color/transparent"
            android:layout_height="wrap_content"
            android:minHeight="@dimen/tab_layout_height">

            <android.support.design.widget.TabLayout
                android:id="@+id/tabs"
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:background="@android:color/transparent"
                app:tabGravity="fill"
                app:tabIndicatorColor="@android:color/white"
                app:tabMode="scrollable"
                app:tabSelectedTextColor="@android:color/white" />
        </android.support.v7.widget.Toolbar>

    </android.support.design.widget.CollapsingToolbarLayout>

</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" />

<android.support.design.widget.FloatingActionButton
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:src="@drawable/ic_add_black_24dp"
    android:layout_margin="@dimen/fab_margin"
    android:tint="@android:color/white"
    android:layout_gravity="bottom|end"
    app:elevation="@dimen/fab_elevation"
    app:layout_behavior="ua.naiksoftware.hidetabs.FabSlidingBehavior"/>

</android.support.design.widget.CoordinatorLayout>

Collapsed

Expanded

@Sjd Did you find solution ? if not then reply back i will post solution. — mfaisalhyder, Jun 17 '16 at 07:34

score 52 · Accepted Answer · answered Jul 20 '16 at 09:46

52

I had the same issue and found a solution:

First you have to update to the latest Support Library (I use 24.1.0)

Then apply the stateListAnimator to your AppBarLayout:

example:

<android.support.design.widget.AppBarLayout
    android:id="@+id/appbar"
    android:layout_width="match_parent"
    android:layout_height="320dp"
    android:stateListAnimator="@drawable/appbar_always_elevated"
    android:fitsSystemWindows="true">

and use this xml as animator:

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:android="http://schemas.android.com/apk/res/android">
    <item>
        <objectAnimator android:propertyName="elevation"
            android:valueTo="8dp"
            android:valueType="floatType"
            android:duration="1"/>
    </item>
</selector>

answered Jul 20 '16 at 09:46

Miguel Beltran

2,132
1
23
36

Awesome! It also works with `CollapsingToolbarLayout` which has `ImageView`, Thanks. – ʍѳђઽ૯ท Oct 15 '16 at 12:15
does this support all api version ? – Moulesh Oct 27 '17 at 13:53
1

it works, but floating action button with "layout_anchor" param is getting overlapped by appbarlayout – AloDev Feb 09 '18 at 11:38
@AloDev did you find a solution to the fab problem? – Drunken Daddy Jun 09 '18 at 17:03
@HeisenBerg No, I didn't – AloDev Jun 13 '18 at 10:34
@AloDev maybe your FAB is at a lower elevation than "8dp", used in the animator? – DenisGL Jun 14 '18 at 17:18
@HeisenBerg make your FAB elevation bigger than 8dp – alacoo Dec 27 '18 at 21:58
2

I actually was trying to achieve the opposite by removing the shadow for all the states. This answer helped me to do so by changing the value of "android:valueTo" from "8dp" to "0dp", and obviously renaming the drawable file from "@drawable/appbar_always_elevated" to "@drawable/appbar_never_elevated". Thanks :) – Yasir Ali Sep 05 '19 at 10:51

Yuraj · Answer 2 · 2017-08-03T16:10:41.627

20

You can find official stateListAnimator for AppBarLayout here

1. Put this appbar_elevation.xml into resources directory named animator-v21

<?xml version="1.0" encoding="utf-8"?>
<selector xmlns:tools="http://schemas.android.com/tools"
    xmlns:android="http://schemas.android.com/apk/res/android"
    tools:ignore="PrivateResource">
    <item>
        <objectAnimator
            android:propertyName="elevation"
            android:valueTo="@dimen/design_appbar_elevation"
            android:valueType="floatType" />
    </item>
</selector>

2. On AppBarLayout set android:stateListAnimator="@animator/appbar_elevation"

edited Aug 03 '17 at 16:10

answered Aug 31 '16 at 10:28

Yuraj

3,185
1
23
42

update for the deadlink: https://android.googlesource.com/platform/frameworks/support.git/+/master/design/res/animator-v21/design_appbar_state_list_animator.xml – dumbfingers Jul 28 '17 at 14:43

score 1 · Answer 3 · answered Jun 01 '22 at 11:39

1

Just use

app:liftOnScroll="false"

on the AppBarLayout

answered Jun 01 '22 at 11:39

Sjd

1,261
1
12
11

thanks but I asked 6y ago, there was an old api – Nickolay Savchenko Jun 02 '22 at 12:02
You may have asked the question 6 years ago but I found this answer today. It's THE most helpful answer. – spaaarky21 Feb 24 '23 at 01:37

CollapsingToolbarLayout without shadow in expanded state

3 Answers3