From 465560d388cdd9c2e0bb06b6d5af2d5c084e5cbf Mon Sep 17 00:00:00 2001
From: Arc Wang <arcwang@google.com>
Date: Fri, 25 Jun 2021 16:18:03 +0800
Subject: [PATCH] Shows ripple effect inside CardPreference's rounded rectangle

contextual_card_background is a drawable which shows ripple.
Sets contextual_card_background as the foreground of
MaterialCardView.

Bug: 191617809
Test: manual visual
Change-Id: I09ee886fe56e443626042682381560ed0f32d51d
---
 res/layout/card_preference_layout.xml | 25 ++++++++++++-------------
 1 file changed, 12 insertions(+), 13 deletions(-)

diff --git a/res/layout/card_preference_layout.xml b/res/layout/card_preference_layout.xml
index 90e33882dd0..5ac4afc1035 100644
--- a/res/layout/card_preference_layout.xml
+++ b/res/layout/card_preference_layout.xml
@@ -15,20 +15,19 @@
   limitations under the License.
   -->
 
-<FrameLayout
+<com.google.android.material.card.MaterialCardView
     xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@+id/container"
     android:layout_width="match_parent"
-    android:layout_height="wrap_content">
-    <com.google.android.material.card.MaterialCardView
-        android:id="@+id/container"
+    android:layout_height="wrap_content"
+    android:layout_margin="8dp"
+    android:foreground="@drawable/contextual_card_background"
+    android:clickable="true"
+    style="@style/ContextualCardStyle">
+
+    <include
         android:layout_width="match_parent"
         android:layout_height="wrap_content"
-        android:layout_margin="8dp"
-        style="@style/ContextualCardStyle">
-        <include
-            android:layout_width="match_parent"
-            android:layout_height="wrap_content"
-            android:layout_marginStart="-8dp"
-            layout="@layout/settingslib_preference" />
-    </com.google.android.material.card.MaterialCardView>
-</FrameLayout>
+        android:layout_marginStart="-8dp"
+        layout="@layout/settingslib_preference"/>
+</com.google.android.material.card.MaterialCardView>