How to properly set elevation value to recyclerview?

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I am working on grid layout using recyclerview in android. The grid occupies a portion of the screen and has a shadow. To get the desired shadow effect I am using an elevation value of 12 dp. But it does not seem to work as I cannot see any elevation (shadow) of the grid. Why is this happening? Does recyclerview not support elevation?

<?xml version="1.0" encoding="utf-8"?>
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android"
xmlns:tools="http://schemas.android.com/tools"
android:layout_width="match_parent"
android:id="@+id/activity_grid_layout"
android:background="@drawable/gradient"
android:layout_height="match_parent"
tools:context="com.mindhive.mindhive.activities.GridActivity">

<android.support.v7.widget.RecyclerView
    android:id="@+id/grid_recycler_view"
    android:layout_width="match_parent"
    android:layout_height="match_parent"
    android:layout_marginBottom="110dp"
    android:layout_marginLeft="15dp"
    android:layout_marginTop="80dp"
    android:background="@color/transparent"
    android:elevation="12dp"
    android:scrollIndicators="none"
    android:scrollbars="none"
    android:padding="0dp" />

<ImageView
    android:id="@+id/imageView"
    android:layout_width="wrap_content"
    android:layout_height="wrap_content"
    android:layout_alignBottom="@+id/grid_recycler_view"
    android:layout_alignStart="@+id/grid_recycler_view"
    android:layout_marginBottom="-18dp"
    android:layout_marginStart="67dp"
    android:src="@drawable/main_filter"
    android:elevation="1dp" />
 ......

I found the answer after a little bit of searching from here. The problem was the transparent background. Elevation works with only non-transparent backgrounds on views. To fix it we should set android:outlineProvider="bounds" on the view and android:clipToPadding="false" on the view's parent.

Hope it helps someone.

How to set elevation to RecyclerView? � GitHub, RecyclerView. android:id="@+id/list". android:name="com.example.elevation. android - How to properly set elevation value to recyclerview? android - How to properly set elevation value to recyclerview? - Stack Overflow material design - Android "elevation" not showing a shadow - Stack Overflow. Elevation & shadows - Material design - Material design guidelines


For Lollipop and you can use the android:elevation property but below lollipop versions you have to give custom shadow so refer the below code for shadow

card_background.xml

<?xml version="1.0" encoding="utf-8"?>
<layer-list xmlns:android="http://schemas.android.com/apk/res/android">
<item>
    <shape android:shape="rectangle">
        <solid android:color="#CABBBBBB"/>
        <corners android:radius="2dp" />
    </shape>
</item>

<item
    android:left="0dp"
    android:right="0dp"
    android:top="0dp"
    android:bottom="2dp">
    <shape android:shape="rectangle">
        <solid android:color="@android:color/white"/>
        <corners android:radius="2dp" />
    </shape>
</item>
</layer-list>

Give this file as a background to your recyclerview inflater file it will work fine.

How to properly set elevation value to recyclerview?, To get the desired shadow effect I am using an elevation value of 12 dp. But it does not seem to work as I cannot see any elevation (shadow) of the grid. Why is � To manage the elevation properly, we need to know when the item starts animation and when it completes. set the initial value of alpha to 0 explicitly. The recyclerView does not have a


The android:elevation does only apply shadows on devices which are running Lollipop or later. If you want to suppot older devices, you have to create a shadow yourself.

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Just set below three property in your recyclerview

android:outlineProvider="bounds"
android:background="@null"
android:elevation="2dp"

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