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 answers like I have tried using elevation and shadow property. I have also tried using card_view:cardUseCompatPadding="true", but without any success. This is my xml file

<?xml version="1.0" encoding="utf-8"?> <android.support.v7.widget.CardView     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="wrap_content"     xmlns:card_view="http://schemas.android.com/tools"     android:layout_marginLeft="12dp"     android:layout_marginRight="12dp"     android:layout_marginTop="6dp"     android:layout_marginBottom="6dp"     app:cardBackgroundColor="#FAFBFD"     app:cardElevation="5dp">      <LinearLayout         android:layout_width="match_parent"         android:layout_height="wrap_content"         android:orientation="vertical">          <RelativeLayout             android:layout_width="match_parent"             android:layout_height="wrap_content">              <de.hdodenhof.circleimageview.CircleImageView                 android:id="@+id/post_profile_image"                 android:layout_width="50dp"                 android:layout_height="50dp"                 android:src="@mipmap/ic_launcher"                 android:layout_marginLeft="12dp"                 android:layout_marginTop="12dp"/>              <LinearLayout                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_toRightOf="@id/post_profile_image"                 android:layout_marginLeft="12dp"                 android:orientation="vertical"                 android:layout_marginTop="16dp">                  <TextView                     android:id="@+id/post_username"                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:text="Name"                     android:textAppearance="?android:attr/textAppearanceMedium"                     android:textColor="#000000"/>                  <TextView                     android:id="@+id/post_time"                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:layout_marginTop="2dp"                     android:text="Time"                     android:textAppearance="?android:attr/textAppearanceSmall"                     android:textColor="@color/grayColor"/>             </LinearLayout>              <LinearLayout                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_alignParentRight="true">                  <ImageButton                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:background="@android:drawable/ic_delete"                     android:id="@+id/post_delete_btn"                     android:visibility="invisible"/>              </LinearLayout>          </RelativeLayout>          <ImageView             android:id="@+id/post_image"             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:layout_centerHorizontal="true"             android:layout_marginTop="12dp"             android:adjustViewBounds="true"             android:background="#00ffffff"             android:src="@drawable/add_btn"             android:visibility="gone"/>          <TextView             android:id="@+id/post_text"             android:layout_width="wrap_content"             android:layout_height="wrap_content"             android:layout_marginTop="12dp"             android:layout_marginLeft="12dp"             android:text="Text about Posting...."             android:textAppearance="?android:attr/textAppearanceMedium"/>          <LinearLayout             android:layout_width="match_parent"             android:layout_height="wrap_content"             android:layout_marginTop="12dp"             android:layout_marginBottom="8dp">              <ImageButton                 android:id="@+id/like_btn"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginLeft="12dp"                 android:background="#00ffffff"                 android:src="@drawable/grey_like_bt"/>              <TextView                 android:id="@+id/post_like_count"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginLeft="4dp"                 android:layout_marginTop="8dp"                 android:text="0 Likes"                 android:textColor="#2196F3"/>              <ImageButton                 android:id="@+id/comment_btn"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginLeft="32dp"                 android:background="#00ffffff"                 android:src="@drawable/comment_btn_gray"/>              <TextView                 android:id="@+id/post_comment_count"                 android:layout_width="wrap_content"                 android:layout_height="wrap_content"                 android:layout_marginLeft="4dp"                 android:layout_marginTop="8dp"                 android:text="0 Comments"                 android:textColor="#2196F3"/>              <RelativeLayout                 android:layout_width="wrap_content"                 android:layout_height="wrap_content">                  <ImageButton                     android:layout_width="wrap_content"                     android:layout_height="wrap_content"                     android:background="@android:drawable/ic_menu_edit"                     android:visibility="invisible"                     android:id="@+id/post_edit_btn"                     android:layout_alignParentRight="true"/>              </RelativeLayout>          </LinearLayout>      </LinearLayout>  </android.support.v7.widget.CardView> 

Dont know why it is not showing any elevation and shadow

Answer 1

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