Add RecyclerView for contextual settings homepage.

Bug: 111676964
Test: robotests
Change-Id: I36002a9085ca12ef027726c5a600ba833dd4f47e

res/layout/settings_homepage.xml

@@ -21,10 +21,11 @@
     android:layout_width="match_parent"
     android:layout_height="match_parent">
 
-    <FrameLayout
-        android:id="@id/main_content"
-        android:layout_height="match_parent"
-        android:layout_width="match_parent" />
+    <androidx.recyclerview.widget.RecyclerView
+        android:id="@+id/card_container"
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"/>
+
     <RelativeLayout
         android:id="@+id/bottom_sheet"
         android:layout_width="match_parent"

res/layout/settings_homepage_container.xml

@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+     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.
+     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.
+-->
+
+<FrameLayout
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:id="@id/main_content"
+    android:layout_height="match_parent"
+    android:layout_width="match_parent"/>

src/com/android/settings/SettingsHomepageActivity.java

@@ -21,14 +21,14 @@ import android.content.Intent;
 import android.os.Bundle;
 import android.util.FeatureFlagUtils;
 
-import com.android.settings.core.FeatureFlags;
-import com.android.settings.core.SettingsBaseActivity;
-import com.android.settings.homepage.HomepageFragment;
-
 import androidx.fragment.app.Fragment;
 import androidx.fragment.app.FragmentActivity;
 import androidx.fragment.app.FragmentManager;
 
+import com.android.settings.core.FeatureFlags;
+import com.android.settings.core.SettingsBaseActivity;
+import com.android.settings.homepage.HomepageFragment;
+
 public class SettingsHomepageActivity extends SettingsBaseActivity {
 
     @Override
@@ -42,7 +42,7 @@ public class SettingsHomepageActivity extends SettingsBaseActivity {
             finish();
             return;
         }
-        setContentView(R.layout.settings_homepage);
+        setContentView(R.layout.settings_homepage_container);
         if (savedInstanceState == null) {
             switchToFragment(this, R.id.main_content, HomepageFragment.class.getName());
         }

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

@@ -26,6 +26,8 @@ import android.view.ViewGroup;
 import android.widget.Toolbar;
 
 import androidx.annotation.NonNull;
+import androidx.recyclerview.widget.LinearLayoutManager;
+import androidx.recyclerview.widget.RecyclerView;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
@@ -45,6 +47,9 @@ public class HomepageFragment extends InstrumentedFragment {
     private static final String SAVE_BOTTOMBAR_STATE = "bottombar_state";
     private static final String SAVE_BOTTOM_FRAGMENT_LOADED = "bottom_fragment_loaded";
 
+    private RecyclerView mCardsContainer;
+    private LinearLayoutManager mLayoutManager;
+
     private FloatingActionButton mSearchButton;
     private BottomSheetBehavior mBottomSheetBehavior;
     private View mBottomBar;
@@ -54,7 +59,13 @@ public class HomepageFragment extends InstrumentedFragment {
     @Override
     public View onCreateView(LayoutInflater inflater, ViewGroup container,
             Bundle savedInstanceState) {
-        final View rootView = inflater.inflate(R.layout.dashboard, container, false);
+        final View rootView = inflater.inflate(R.layout.settings_homepage,
+                container, false);
+        mCardsContainer = (RecyclerView) rootView.findViewById(R.id.card_container);
+        //TODO(b/111822407): May have to swap to GridLayoutManager
+        mLayoutManager = new LinearLayoutManager(getActivity());
+        mCardsContainer.setLayoutManager(mLayoutManager);
+
         return rootView;
     }