Adding dark theme for AddItemActivity

Bug: 117786476
Change-Id: I1a3adb7c10ed2326dc1440c3db15f702f42dbfd8

AndroidManifest-common.xml

@@ -122,7 +122,7 @@
                        android:value="true" />
 
         <activity android:name="com.android.launcher3.dragndrop.AddItemActivity"
-            android:theme="@android:style/Theme.DeviceDefault.Light.Dialog.Alert"
+            android:theme="@style/AppItemActivityTheme"
             android:excludeFromRecents="true"
             android:autoRemoveFromRecents="true"
             android:label="@string/action_add_to_workspace" >

res/layout/add_item_confirmation_activity.xml

@@ -44,7 +44,7 @@
                 android:layout_width="match_parent"
                 android:layout_height="wrap_content"
                 android:background="?android:attr/colorPrimaryDark"
-                android:theme="@style/WidgetContainerTheme">
+                android:theme="?attr/widgetsTheme">
 
                 <com.android.launcher3.dragndrop.LivePreviewWidgetCell
                     android:id="@+id/widget_cell"

res/values-night-v26/styles.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
 /*
-* Copyright (C) 2016 The Android Open Source Project
+* Copyright (C) 2018 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.
@@ -16,13 +16,11 @@
 * limitations under the License.
 */
 -->
+
 <resources>
 
-    <style name="LauncherTheme" parent="@style/BaseLauncherThemeWithCustomAttrs">
+    <style name="AppItemActivityTheme" parent="@android:style/Theme.DeviceDefault.Dialog.Alert">
-        <item name="android:windowTranslucentStatus">false</item>
+        <item name="widgetsTheme">@style/WidgetContainerTheme.Dark</item>
-        <item name="android:windowTranslucentNavigation">false</item>
-        <item name="android:windowDrawsSystemBarBackgrounds">true</item>
-        <item name="android:statusBarColor">#00000000</item>
-        <item name="android:navigationBarColor">#00000000</item>
     </style>
+
 </resources>

res/values-v22/styles.xml

@@ -1,7 +1,7 @@
 <?xml version="1.0" encoding="utf-8"?>
 <!--
 /*
-* Copyright (C) 2016 The Android Open Source Project
+* Copyright (C) 2018 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.
@@ -16,11 +16,11 @@
 * limitations under the License.
 */
 -->
+
 <resources>
 
-    <style name="LauncherTheme" parent="@style/BaseLauncherThemeWithCustomAttrs">
+    <style name="AppItemActivityTheme" parent="@android:style/Theme.DeviceDefault.Light.Dialog.Alert">
-        <item name="android:windowTranslucentStatus">true</item>
+        <item name="widgetsTheme">@style/WidgetContainerTheme</item>
-        <item name="android:windowTranslucentNavigation">true</item>
     </style>
 
 </resources>

res/values/styles.xml

@@ -27,7 +27,7 @@
         <item name="android:colorEdgeEffect">#FF757575</item>
     </style>
 
-    <style name="BaseLauncherThemeWithCustomAttrs" parent="@style/BaseLauncherTheme">
+    <style name="LauncherTheme" parent="@style/BaseLauncherTheme">
         <item name="allAppsScrimColor">#EAFFFFFF</item>
         <item name="allAppsInterimScrimAlpha">46</item>
         <item name="allAppsNavBarScrimColor">#66FFFFFF</item>
@@ -44,9 +44,13 @@
         <item name="widgetsTheme">@style/WidgetContainerTheme</item>
         <item name="folderBadgeColor">?android:attr/colorPrimary</item>
         <item name="loadingIconColor">#FFF</item>
-    </style>
 
-    <style name="LauncherTheme" parent="@style/BaseLauncherThemeWithCustomAttrs"></style>
+        <item name="android:windowTranslucentStatus">false</item>
+        <item name="android:windowTranslucentNavigation">false</item>
+        <item name="android:windowDrawsSystemBarBackgrounds">true</item>
+        <item name="android:statusBarColor">#00000000</item>
+        <item name="android:navigationBarColor">#00000000</item>
+    </style>
 
     <style name="LauncherTheme.DarkText" parent="@style/LauncherTheme">
         <item name="workspaceTextColor">#FF212121</item>
@@ -94,6 +98,10 @@
     <style name="AppTheme.Dark" parent="@style/LauncherTheme.Dark" />
     <style name="AppTheme.Dark.DarkText" parent="@style/LauncherTheme.Dark.DarkText" />
 
+    <style name="AppItemActivityTheme" parent="@android:style/Theme.Material.Light.Dialog.Alert">
+        <item name="widgetsTheme">@style/WidgetContainerTheme</item>
+    </style>
+
     <!--
     Theme overrides to element on homescreen, i.e., which are drawn on top on wallpaper.
     Various foreground colors are overridden to be workspaceTextColor so that they are properly