CardView not showing shadow elevation

Question

I am working with cardviews but the problem is my CardView is not showing any elevation or shadow. I have already tried some of the methods suggested in stackoverflow answer

Answer 1

The answer is a combination of margin and padding of cardView and its parent.

Try like this:

    <android.support.v7.widget.CardView
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:layout_marginBottom="@dimen/minimum_dimem"
            android:layout_marginLeft="@dimen/default_margin"
            android:layout_marginRight="@dimen/default_margin"
            android:layout_marginTop="@dimen/minimum_dimem"
            app:cardBackgroundColor="@color/white"
            app:cardCornerRadius="@dimen/cardview_radius"
            app:cardElevation="@dimen/cardview_default_elevation">

            <RelativeLayout
                android:layout_width="match_parent"
                android:layout_height="wrap_content"
                android:orientation="vertical"
                android:padding="@dimen/ten_dimem">

                ...

           </RelativeLayout>
</android.support.v7.widget.CardView>

And the result:

Answer 2

<android.support.design.card.MaterialCardView
    xmlns:android="http://schemas.android.com/apk/res/android"
    android:layout_width="match_parent"
    android:layout_height="wrap_content"
    xmlns:app="http://schemas.android.com/apk/res-auto"
    xmlns:card_view="http://schemas.android.com/tools"
    app:cardCornerRadius="@dimen/_5sdp"
    card_view:cardCornerRadius="3dp"
    android:layout_margin="@dimen/_3sdp"
    card_view:cardElevation="10dp"
    card_view:cardUseCompatPadding="true">
</android.support.design.card.MaterialCardView>

Use above code and don't forget to use android:hardwareAccelerated="true". It will work definitely.

Answer 3

You should have to try this:

<android.support.v7.widget.CardView
        android:layout_width="match_parent"
        android:layout_height="wrap_content"
        android:layout_margin="5dp"
        app:cardElevation="3dp">

        <LinearLayout
            android:layout_width="match_parent"
            android:layout_height="wrap_content"
            android:orientation="vertical">
        </LinearLayout>

        <!--Put your other fields between this-->
</android.support.v7.widget.CardView>

Answer 4

There are two things that helped me solve this problem:

1. Setting this in the application tag of my manifest:

   android:hardwareAccelerated="false"
   

2. File > Invalidate cache and restart

Answer 5

Try putting this in your rootview:

xmlns:card_view="http://schemas.android.com/apk/res-auto" 

and use this code for elevation:

card_view:cardElevation="10dp"

Answer 6

Do not forget that to draw shadow you must use hardwareAccelerated drawing

<application android:hardwareAccelerated="true" ...>

see for details https://developer.android.com/guide/topics/graphics/hardware-accel.html?hl=ru