Fine tune background color for dual pane in homepage

Follow the spec and change the background color.

Test: See the screen
Bug: 223329504
Change-Id: Ibcbf0e898ae949e1354f5af810a2347eba42b508

color-check-baseline.xml

@@ -3245,6 +3245,22 @@
             column="13"/>
     </issue>
 
+    <issue
+        id="HardCodedColor"
+        severity="Error"
+        message="Avoid using hardcoded color"
+        category="Correctness"
+        priority="4"
+        summary="Using hardcoded color"
+        explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
+        errorLine1="            android:color=&quot;@color/homepage_network_background&quot; />"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="res/drawable/ic_homepage_data_usage.xml"
+            line="24"
+            column="13"/>
+    </issue>
+
     <issue
         id="HardCodedColor"
         severity="Error"
@@ -3453,6 +3469,22 @@
             column="13"/>
     </issue>
 
+    <issue
+        id="HardCodedColor"
+        severity="Error"
+        message="Avoid using hardcoded color"
+        category="Correctness"
+        priority="4"
+        summary="Using hardcoded color"
+        explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
+        errorLine1="            android:color=&quot;@color/homepage_network_background&quot; />"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="res/drawable/ic_homepage_vpn.xml"
+            line="24"
+            column="13"/>
+    </issue>
+
     <issue
         id="HardCodedColor"
         severity="Error"
@@ -3469,6 +3501,22 @@
             column="13"/>
     </issue>
 
+    <issue
+        id="HardCodedColor"
+        severity="Error"
+        message="Avoid using hardcoded color"
+        category="Correctness"
+        priority="4"
+        summary="Using hardcoded color"
+        explanation="Hardcoded color values are bad because theme changes cannot be uniformly applied.Instead use the theme specific colors such as `?android:attr/textColorPrimary` in attributes.&#xA;This ensures that a theme change from a light to a dark theme can be uniformlyapplied across the app."
+        errorLine1="            android:color=&quot;@color/homepage_network_background&quot; />"
+        errorLine2="            ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~">
+        <location
+            file="res/drawable/ic_homepage_wifi_tethering.xml"
+            line="24"
+            column="13"/>
+    </issue>
+
     <issue
         id="HardCodedColor"
         severity="Error"
@@ -4521,7 +4569,7 @@
         errorLine2="                                                                                                                                                                         ~~~~~~~~~~~~~~~~~~~">
         <location
             file="res/values-en-rXC/strings.xml"
-            line="3108"
+            line="3144"
             column="170"/>
     </issue>
 
@@ -4537,7 +4585,7 @@
         errorLine2="                                                               ~~~~~~~~~~~~~~~~~~~">
         <location
             file="res/values-en-rAU/strings.xml"
-            line="3112"
+            line="3158"
             column="64"/>
     </issue>
 
@@ -4553,7 +4601,7 @@
         errorLine2="                                                               ~~~~~~~~~~~~~~~~~~~">
         <location
             file="res/values-en-rCA/strings.xml"
-            line="3112"
+            line="3158"
             column="64"/>
     </issue>
 
@@ -4569,7 +4617,7 @@
         errorLine2="                                                               ~~~~~~~~~~~~~~~~~~~">
         <location
             file="res/values-en-rGB/strings.xml"
-            line="3112"
+            line="3158"
             column="64"/>
     </issue>
 
@@ -4585,7 +4633,7 @@
         errorLine2="                                                               ~~~~~~~~~~~~~~~~~~~">
         <location
             file="res/values-en-rIN/strings.xml"
-            line="3112"
+            line="3158"
             column="64"/>
     </issue>
 
@@ -4601,7 +4649,7 @@
         errorLine2="                                   ~~~~~~~~~~~~~~~~~~~">
         <location
             file="res/values/strings.xml"
-            line="7103"
+            line="7139"
             column="36"/>
     </issue>
 

res/color-night/settings_two_pane_background_color.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2022 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@android:color/system_neutral1_500" android:lStar="5" />
+</selector>

res/color/settings_two_pane_background_color.xml

@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2022 The Android Open Source Project
+
+     Licensed under the Apache License, Version 2.0 (the "License");
+     you may not use this file except in compliance with the License.
+     You may obtain a copy of the License at
+
+          http://www.apache.org/licenses/LICENSE-2.0
+
+     Unless required by applicable law or agreed to in writing, software
+     distributed under the License is distributed on an "AS IS" BASIS,
+     WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+     See the License for the specific language governing permissions and
+     limitations under the License.
+-->
+<selector xmlns:android="http://schemas.android.com/apk/res/android">
+    <item android:color="@android:color/system_neutral1_500" android:lStar="87" />
+</selector>

res/layout/settings_homepage_app_bar_two_pane_layout.xml

@@ -17,11 +17,10 @@
 
 <LinearLayout
     xmlns:android="http://schemas.android.com/apk/res/android"
-    xmlns:androidprv="http://schemas.android.com/apk/prv/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
-    android:background="?androidprv:attr/colorSurface"
-    android:orientation="vertical">
+    android:orientation="vertical"
+    android:background="@color/settings_two_pane_background_color">
 
     <FrameLayout
         android:id="@+id/two_pane_suggestion_content"

src/com/android/settings/homepage/SettingsHomepageActivity.java

@@ -325,7 +325,7 @@ public class SettingsHomepageActivity extends FragmentActivity implements
 
         final Window window = getWindow();
         final int color = mIsTwoPane
-                ? Utils.getColorAttrDefaultColor(this, com.android.internal.R.attr.colorSurface)
+                ? getColor(R.color.settings_two_pane_background_color)
                 : Utils.getColorAttrDefaultColor(this, android.R.attr.colorBackground);
 
         window.addFlags(WindowManager.LayoutParams.FLAG_DRAWS_SYSTEM_BAR_BACKGROUNDS);