CardView not showing Shadow in Android L
Solution 1
After going through the docs again, I finally found the solution.
Just add card_view:cardUseCompatPadding="true"
to your CardView
and shadows will appear on Lollipop devices.
What happens is, the content area in a CardView
take different sizes on pre-lollipop and lollipop devices. So in lollipop devices the shadow is actually covered by the card so its not visible. By adding this attribute the content area remains the same across all devices and the shadow becomes visible.
My xml code is like :
<android.support.v7.widget.CardView
android:id="@+id/media_card_view"
android:layout_width="match_parent"
android:layout_height="130dp"
card_view:cardBackgroundColor="@android:color/white"
card_view:cardElevation="2dp"
card_view:cardUseCompatPadding="true"
>
...
</android.support.v7.widget.CardView>
Solution 2
Do not forget that to draw shadow you must use hardwareAccelerated
drawing
hardwareAccelerated = true
hardwareAccelerated = false
See Android Hardware Acceleration for details
Solution 3
use app:cardUseCompatPadding="true"
inside your cardview.
For Example
<android.support.v7.widget.CardView
android:id="@+id/card_view"
android:layout_width="match_parent"
android:layout_height="match_parent"
android:layout_marginRight="@dimen/cardviewMarginRight"
app:cardBackgroundColor="@color/menudetailsbgcolor"
app:cardCornerRadius="@dimen/cardCornerRadius"
app:cardUseCompatPadding="true"
app:elevation="0dp">
</android.support.v7.widget.CardView>
Solution 4
check hardwareAccelerated in manifest make it true , making it false removes shadows , when false shadow appears in xml preview but not in phone .
Solution 5
Add this line to CardView....
card_view:cardUseCompatPadding="true" //for enable shadow
card_view:cardElevation="9dp" // this for how much shadow you want to show
Tips
You can avoid layout_marginTop and layout_marginBottom as shadow itself takes some space to the up and down of it.The amount space defined by how much you will use in card_view:cardElevation="ndp" .
Happy Coding (:
isumit
Updated on July 08, 2022Comments
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isumit almost 2 years
My Cardview inside Listview is not showing shadow in Android L(Nexus 5). Also the round edges are not properly shown. Here is the code for Listview's Adapter View :
<?xml version="1.0" encoding="utf-8"?><LinearLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:tools="http://schemas.android.com/tools" xmlns:card_view="http://schemas.android.com/apk/res-auto" xmlns:app="http://schemas.android.com/apk/res/com.example.myapp" android:layout_width="match_parent" android:layout_height="wrap_content" android:orientation="vertical" > <android.support.v7.widget.CardView xmlns:card_view="http://schemas.android.com/apk/res-auto" android:id="@+id/card_view" android:layout_width="match_parent" android:layout_height="wrap_content" app:cardBackgroundColor="@android:color/white" android:foreground="?android:attr/selectableItemBackground" app:cardCornerRadius="4dp" app:cardElevation="4dp" > <RelativeLayout android:layout_width="match_parent" android:layout_height="match_parent" android:paddingBottom="@dimen/activity_vertical_margin" android:paddingTop="@dimen/activity_vertical_margin" > <TextView android:id="@+id/tvName" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_alignParentTop="true" android:layout_marginTop="@dimen/padding_small" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" android:textAppearance="?android:attr/textAppearanceLarge" /> <ImageView android:id="@+id/ivPicture" android:layout_width="match_parent" android:layout_height="wrap_content" android:layout_below="@+id/tvName" android:layout_centerHorizontal="true" android:scaleType="fitCenter" /> <TextView android:id="@+id/tvDetail" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_below="@+id/ivPicture" android:layout_centerHorizontal="true" android:paddingLeft="@dimen/activity_horizontal_margin" android:paddingRight="@dimen/activity_horizontal_margin" /> </RelativeLayout> </android.support.v7.widget.CardView>
And the ListView xml :
<RelativeLayout xmlns:android="http://schemas.android.com/apk/res/android" xmlns:card_view="http://schemas.android.com/apk/res-auto" xmlns:tools="http://schemas.android.com/tools" xmlns:app="http://schemas.android.com/apk/res/com.example.myapp" android:layout_width="fill_parent" android:layout_height="fill_parent" android:background="@drawable/app_bg" > <ListView android:id="@android:id/list" android:layout_width="match_parent" android:layout_height="match_parent" android:layout_alignParentTop="true" android:cacheColorHint="#00000000" android:divider="@android:color/transparent" android:drawSelectorOnTop="true" android:smoothScrollbar="true" /> <ProgressBar android:id="@+id/progressBarMain" style="?android:attr/progressBarStyleLarge" android:layout_width="wrap_content" android:layout_height="wrap_content" android:layout_centerInParent="true" android:visibility="gone" /></RelativeLayout>
It works fine on pre-L devices with proper shadow and rounded corners. But not working aon Android L device. Can you tell what i am missing here?
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isumit over 9 yearsadding margins to cardview from layout file works. Didn't tried from code
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Aksel Fatih almost 8 yearsHardware acceleration is enabled by default if your Target API level is >=14 !
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Ajith M A almost 8 yearsI already had the card_view:cardUseCompatPadding values set, still was not able to get the shaddows. What i was missing is this, the margins. And it really worked. Thanks.
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Ram Patra over 7 years@alex-lockwood Can you please explain your change i.e,
card_view:cardElevation="2sp"
tocard_view:cardElevation="2dp"
? -
Alex Lockwood over 7 years@Ramswaroop
sp
should only be used for text sizes.dp
should be used for all other dimensions. -
Deepak Kumar over 7 yearsIt's working,. But I don't understand reason behind this
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behelit about 7 yearswhat's your margin value? is
8dp
enough? -
Remi about 7 yearsI my case card_view:cardUseCompatPadding was needed. Additionally I need to change targetSdkVersion to 21. Changing margin has no effect.
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fullmoon almost 7 yearsthank you, the key was card_view:cardElevation and not android:cardElevation
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Ram Patra almost 5 years@KishanSolanki124 I think the OP (@isumit) has lost track of this thread.
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jhfdr3s almost 3 yearsThis sounds radical
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Giddy Naya over 2 yearsapp:cardBackgroundColor="@android:color/white"... Most important. Add a background color!