Merge "Revert the mandatory backups feature."
diff --git a/res/layout/master_clear.xml b/res/layout/master_clear.xml
index 9f89961..921347e 100644
--- a/res/layout/master_clear.xml
+++ b/res/layout/master_clear.xml
@@ -23,8 +23,8 @@
             android:id="@+id/master_clear_scrollview"
             android:layout_width="match_parent"
             android:layout_height="0dip"
-            android:layout_marginStart="@dimen/preference_no_icon_padding_start"
-            android:layout_marginEnd="12dp"
+            android:layout_marginStart="@dimen/reset_master_clear_margin_start"
+            android:layout_marginEnd="@dimen/reset_master_clear_margin_end"
             android:layout_marginTop="12dp"
             android:layout_weight="1">
         <LinearLayout
diff --git a/res/layout/reset_network.xml b/res/layout/reset_network.xml
index 1850bb2..7eb5d2a 100644
--- a/res/layout/reset_network.xml
+++ b/res/layout/reset_network.xml
@@ -23,8 +23,8 @@
     <ScrollView
         android:layout_width="match_parent"
         android:layout_height="0dip"
-        android:layout_marginStart="@dimen/preference_no_icon_padding_start"
-        android:layout_marginEnd="12dp"
+        android:layout_marginStart="@dimen/reset_network_margin_start"
+        android:layout_marginEnd="@dimen/reset_network_margin_end"
         android:layout_marginTop="12dp"
         android:layout_weight="1">
 
diff --git a/res/layout/screen_pinning_instructions.xml b/res/layout/screen_pinning_instructions.xml
index 80fec3c..fea5ed8 100644
--- a/res/layout/screen_pinning_instructions.xml
+++ b/res/layout/screen_pinning_instructions.xml
@@ -31,8 +31,8 @@
         android:paddingTop="@dimen/screen_pinning_textview_padding"
         android:text="@string/screen_pinning_description"
         android:textAppearance="@style/TextAppearance.Medium"
-        android:paddingStart="@dimen/screen_margin_sides"
-        android:paddingEnd="@dimen/screen_margin_sides"
+        android:paddingStart="@dimen/screen_pinning_padding_start"
+        android:paddingEnd="@dimen/screen_pinning_padding_end"
         />
 
 </ScrollView>
diff --git a/res/values-sw600dp-land/dimens.xml b/res/values-sw600dp-land/dimens.xml
index d5ea762..afdcd0e 100755
--- a/res/values-sw600dp-land/dimens.xml
+++ b/res/values-sw600dp-land/dimens.xml
@@ -29,4 +29,8 @@
 
     <dimen name="confirm_credentials_top_padding">20dp</dimen>
     <dimen name="confirm_credentials_top_margin">24dp</dimen>
+
+    <!-- Padding for screen pinning -->
+    <dimen name="screen_pinning_padding_start">128dp</dimen>
+    <dimen name="screen_pinning_padding_end">128dp</dimen>
 </resources>
diff --git a/res/values-sw600dp/dimens.xml b/res/values-sw600dp/dimens.xml
index 273225e..241471c 100755
--- a/res/values-sw600dp/dimens.xml
+++ b/res/values-sw600dp/dimens.xml
@@ -62,4 +62,8 @@
     <dimen name="confirm_credentials_top_padding">48dp</dimen>
     <dimen name="confirm_credentials_side_margin">0dp</dimen>
     <dimen name="confirm_credentials_top_margin">64dp</dimen>
+
+    <!-- Padding for screen pinning -->
+    <dimen name="screen_pinning_padding_start">40dp</dimen>
+    <dimen name="screen_pinning_padding_end">40dp</dimen>
 </resources>
diff --git a/res/values-xlarge/dimens.xml b/res/values-xlarge/dimens.xml
index b6b4591..df9d56f 100755
--- a/res/values-xlarge/dimens.xml
+++ b/res/values-xlarge/dimens.xml
@@ -18,4 +18,8 @@
     <dimen name="screen_margin_sides">128dip</dimen>
     <dimen name="datetime_margin_top">154dip</dimen>
     <dimen name="datetime_margin_bottom">96dip</dimen>
+
+    <!-- Padding for screen pinning -->
+    <dimen name="screen_pinning_padding_start">128dp</dimen>
+    <dimen name="screen_pinning_padding_end">128dp</dimen>
 </resources>
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index be57bf7..16d9f96 100755
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -297,6 +297,16 @@
     <dimen name="battery_meter_width">66dp</dimen>
     <dimen name="battery_meter_height">100dp</dimen>
 
+    <!-- Margin for the reset screens -->
+    <dimen name="reset_network_margin_start">72dp</dimen>
+    <dimen name="reset_network_margin_end">12dp</dimen>
+    <dimen name="reset_master_clear_margin_start">72dp</dimen>
+    <dimen name="reset_master_clear_margin_end">12dp</dimen>
+
+    <!-- Padding for screen pinning -->
+    <dimen name="screen_pinning_padding_start">64dp</dimen>
+    <dimen name="screen_pinning_padding_end">64dp</dimen>
+
     <!-- Suggestion/condition header padding -->
     <dimen name="suggestion_condition_header_padding_collapsed">10dp</dimen>
     <dimen name="suggestion_condition_header_padding_expanded">5dp</dimen>
diff --git a/src/com/android/settings/SettingsPreferenceFragment.java b/src/com/android/settings/SettingsPreferenceFragment.java
index 4197e2f..87a3511 100644
--- a/src/com/android/settings/SettingsPreferenceFragment.java
+++ b/src/com/android/settings/SettingsPreferenceFragment.java
@@ -541,10 +541,6 @@
         private DialogInterface.OnCancelListener mOnCancelListener;
         private DialogInterface.OnDismissListener mOnDismissListener;
 
-        public SettingsDialogFragment() {
-            /* do nothing */
-        }
-
         public SettingsDialogFragment(DialogCreatable fragment, int dialogId) {
             super(fragment, dialogId);
             if (!(fragment instanceof Fragment)) {
diff --git a/src/com/android/settings/applications/defaultapps/DefaultBrowserPreferenceController.java b/src/com/android/settings/applications/defaultapps/DefaultBrowserPreferenceController.java
index ec6ea8c..9e76ff5 100644
--- a/src/com/android/settings/applications/defaultapps/DefaultBrowserPreferenceController.java
+++ b/src/com/android/settings/applications/defaultapps/DefaultBrowserPreferenceController.java
@@ -111,7 +111,7 @@
         final List<ResolveInfo> candidates = new ArrayList<>();
         // Resolve that intent and check that the handleAllWebDataURI boolean is set
         final List<ResolveInfo> list = packageManager.queryIntentActivitiesAsUser(
-            BROWSE_PROBE, PackageManager.MATCH_ALL, userId);
+            BROWSE_PROBE, 0 /* flags */, userId);
         if (list != null) {
             final Set<String> addedPackages = new ArraySet<>();
             for (ResolveInfo info : list) {
@@ -181,13 +181,12 @@
      * Whether or not the pkg is the default browser
      */
     public boolean isBrowserDefault(String pkg, int userId) {
-        String defaultPackage = mPackageManager.getDefaultBrowserPackageNameAsUser(userId);
+        final String defaultPackage = mPackageManager.getDefaultBrowserPackageNameAsUser(userId);
         if (defaultPackage != null) {
             return defaultPackage.equals(pkg);
         }
 
-        final List<ResolveInfo> list = mPackageManager.queryIntentActivitiesAsUser(BROWSE_PROBE,
-                PackageManager.MATCH_ALL, userId);
+        final List<ResolveInfo> list = getCandidates(mPackageManager, userId);
         // There is only 1 app, it must be the default browser.
         return list != null && list.size() == 1;
     }
diff --git a/src/com/android/settings/connecteddevice/usb/UsbDetailsFragment.java b/src/com/android/settings/connecteddevice/usb/UsbDetailsFragment.java
index 4b717e0..936a4c0 100644
--- a/src/com/android/settings/connecteddevice/usb/UsbDetailsFragment.java
+++ b/src/com/android/settings/connecteddevice/usb/UsbDetailsFragment.java
@@ -17,7 +17,6 @@
 package com.android.settings.connecteddevice.usb;
 
 import android.content.Context;
-import android.os.Bundle;
 import android.provider.SearchIndexableResource;
 
 import androidx.annotation.VisibleForTesting;
@@ -71,15 +70,6 @@
     }
 
     @Override
-    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
-        super.onCreatePreferences(savedInstanceState, rootKey);
-    }
-
-    public boolean isConnected() {
-        return mUsbReceiver.isConnected();
-    }
-
-    @Override
     protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
         mUsbBackend = new UsbBackend(context);
         mControllers = createControllerList(context, mUsbBackend, this);
diff --git a/src/com/android/settings/core/FeatureFlags.java b/src/com/android/settings/core/FeatureFlags.java
index 08b4e82..1062811 100644
--- a/src/com/android/settings/core/FeatureFlags.java
+++ b/src/com/android/settings/core/FeatureFlags.java
@@ -20,7 +20,6 @@
  * This class keeps track of all feature flags in Settings.
  */
 public class FeatureFlags {
-    public static final String BATTERY_DISPLAY_APP_LIST = "settings_battery_display_app_list";
     public static final String BLUETOOTH_WHILE_DRIVING = "settings_bluetooth_while_driving";
     public static final String AUDIO_SWITCHER_SETTINGS = "settings_audio_switcher";
     public static final String DYNAMIC_HOMEPAGE = "settings_dynamic_homepage";
diff --git a/src/com/android/settings/homepage/CardContentLoader.java b/src/com/android/settings/homepage/CardContentLoader.java
index 47ba59a..9805ae3 100644
--- a/src/com/android/settings/homepage/CardContentLoader.java
+++ b/src/com/android/settings/homepage/CardContentLoader.java
@@ -17,46 +17,52 @@
 package com.android.settings.homepage;
 
 import android.content.Context;
+import android.database.Cursor;
 
-import androidx.annotation.Nullable;
+import androidx.annotation.NonNull;
 
 import com.android.settingslib.utils.AsyncLoaderCompat;
 
+import java.util.ArrayList;
 import java.util.List;
 
-//TODO(b/112521307): Implement this to make it work with the card database.
-public class CardContentLoader {
+public class CardContentLoader extends AsyncLoaderCompat<List<ContextualCard>> {
+    static final int CARD_CONTENT_LOADER_ID = 1;
 
-    private static final String TAG = "CardContentLoader";
-
-    private CardContentLoaderListener mListener;
+    private Context mContext;
 
     public interface CardContentLoaderListener {
         void onFinishCardLoading(List<ContextualCard> contextualCards);
     }
 
-    public CardContentLoader() {
+    CardContentLoader(Context context) {
+        super(context);
+        mContext = context.getApplicationContext();
     }
 
-    void setListener(CardContentLoaderListener listener) {
-        mListener = listener;
+    @Override
+    protected void onDiscardResult(List<ContextualCard> result) {
+
     }
 
-    private static class CardLoader extends AsyncLoaderCompat<List<ContextualCard>> {
-
-        public CardLoader(Context context) {
-            super(context);
+    @NonNull
+    @Override
+    public List<ContextualCard> loadInBackground() {
+        final List<ContextualCard> result = new ArrayList<>();
+        try (Cursor cursor = CardDatabaseHelper.getInstance(mContext).getContextualCards()) {
+            if (cursor.getCount() == 0) {
+                //TODO(b/113372471): Load Default static cards and return 3 static cards
+                return result;
+            }
+            for (cursor.moveToFirst(); !cursor.isAfterLast(); cursor.moveToNext()) {
+                final ContextualCard card = new ContextualCard(cursor);
+                if (card.isCustomCard()) {
+                    //TODO(b/114688391): Load and generate custom card,then add into list
+                } else {
+                    result.add(card);
+                }
+            }
         }
-
-        @Override
-        protected void onDiscardResult(List<ContextualCard> result) {
-
-        }
-
-        @Nullable
-        @Override
-        public List<ContextualCard> loadInBackground() {
-            return null;
-        }
+        return result;
     }
 }
diff --git a/src/com/android/settings/homepage/CardDatabaseHelper.java b/src/com/android/settings/homepage/CardDatabaseHelper.java
index 382b71f..b53479e 100644
--- a/src/com/android/settings/homepage/CardDatabaseHelper.java
+++ b/src/com/android/settings/homepage/CardDatabaseHelper.java
@@ -17,6 +17,7 @@
 package com.android.settings.homepage;
 
 import android.content.Context;
+import android.database.Cursor;
 import android.database.sqlite.SQLiteDatabase;
 import android.database.sqlite.SQLiteOpenHelper;
 import android.util.Log;
@@ -190,4 +191,12 @@
         }
         return sCardDatabaseHelper;
     }
+
+    Cursor getContextualCards() {
+        final SQLiteDatabase db = this.getReadableDatabase();
+        Cursor cursor = db.query(CARD_TABLE, null /* columns */, null /* selection */,
+                null /* selectionArgs */, null /* groupBy */, null /* having */,
+                null /* orderBy */);
+        return cursor;
+    }
 }
diff --git a/src/com/android/settings/homepage/ContextualCard.java b/src/com/android/settings/homepage/ContextualCard.java
index f5083d8..174a437 100644
--- a/src/com/android/settings/homepage/ContextualCard.java
+++ b/src/com/android/settings/homepage/ContextualCard.java
@@ -17,6 +17,7 @@
 package com.android.settings.homepage;
 
 import android.annotation.IntDef;
+import android.database.Cursor;
 import android.graphics.drawable.Drawable;
 import android.net.Uri;
 import android.text.TextUtils;
@@ -58,8 +59,8 @@
     private final int mIconResId;
     private final int mCardAction;
     private final long mExpireTimeMS;
-    private final Drawable mIconDrawable;
     private final boolean mIsHalfWidth;
+    private final Drawable mIconDrawable;
 
     String getName() {
         return mName;
@@ -137,6 +138,10 @@
         return mIsHalfWidth;
     }
 
+    boolean isCustomCard() {
+        return TextUtils.isEmpty(mSliceUri);
+    }
+
     public ContextualCard(Builder builder) {
         mName = builder.mName;
         mCardType = builder.mCardType;
@@ -158,6 +163,31 @@
         mIsHalfWidth = builder.mIsHalfWidth;
     }
 
+    ContextualCard(Cursor c) {
+        mName = c.getString(c.getColumnIndex(CardDatabaseHelper.CardColumns.NAME));
+        mCardType = c.getInt(c.getColumnIndex(CardDatabaseHelper.CardColumns.TYPE));
+        mRankingScore = c.getDouble(c.getColumnIndex(CardDatabaseHelper.CardColumns.SCORE));
+        mSliceUri = c.getString(c.getColumnIndex(CardDatabaseHelper.CardColumns.SLICE_URI));
+        mCategory = c.getInt(c.getColumnIndex(CardDatabaseHelper.CardColumns.CATEGORY));
+        mLocalizedToLocale = c.getString(
+                c.getColumnIndex(CardDatabaseHelper.CardColumns.LOCALIZED_TO_LOCALE));
+        mPackageName = c.getString(c.getColumnIndex(CardDatabaseHelper.CardColumns.PACKAGE_NAME));
+        mAppVersion = c.getString(c.getColumnIndex(CardDatabaseHelper.CardColumns.APP_VERSION));
+        mTitleResName = c.getString(
+                c.getColumnIndex(CardDatabaseHelper.CardColumns.TITLE_RES_NAME));
+        mTitleText = c.getString(c.getColumnIndex(CardDatabaseHelper.CardColumns.TITLE_TEXT));
+        mSummaryResName = c.getString(
+                c.getColumnIndex(CardDatabaseHelper.CardColumns.SUMMARY_RES_NAME));
+        mSummaryText = c.getString(c.getColumnIndex(CardDatabaseHelper.CardColumns.SUMMARY_TEXT));
+        mIconResName = c.getString(c.getColumnIndex(CardDatabaseHelper.CardColumns.ICON_RES_NAME));
+        mIconResId = c.getInt(c.getColumnIndex(CardDatabaseHelper.CardColumns.ICON_RES_ID));
+        mCardAction = c.getInt(c.getColumnIndex(CardDatabaseHelper.CardColumns.CARD_ACTION));
+        mExpireTimeMS = c.getLong(c.getColumnIndex(CardDatabaseHelper.CardColumns.EXPIRE_TIME_MS));
+        mIsHalfWidth = (c.getInt(
+                c.getColumnIndex(CardDatabaseHelper.CardColumns.SUPPORT_HALF_WIDTH)) == 1);
+        mIconDrawable = null;
+    }
+
     @Override
     public int hashCode() {
         return mName.hashCode();
diff --git a/src/com/android/settings/homepage/ContextualCardController.java b/src/com/android/settings/homepage/ContextualCardController.java
index 921d72b..4a7a149 100644
--- a/src/com/android/settings/homepage/ContextualCardController.java
+++ b/src/com/android/settings/homepage/ContextualCardController.java
@@ -27,8 +27,8 @@
     int getCardType();
 
     /**
-     * When data is updated or changed, the new data should be passed to ContextualCardManager for list
-     * updating.
+     * When data is updated or changed, the new data should be passed to ContextualCardManager for
+     * list updating.
      */
     void onDataUpdated(List<ContextualCard> cardList);
 
diff --git a/src/com/android/settings/homepage/ContextualCardManager.java b/src/com/android/settings/homepage/ContextualCardManager.java
index aa2f576..1eec6a7 100644
--- a/src/com/android/settings/homepage/ContextualCardManager.java
+++ b/src/com/android/settings/homepage/ContextualCardManager.java
@@ -16,9 +16,17 @@
 
 package com.android.settings.homepage;
 
+import static com.android.settings.homepage.CardContentLoader.CARD_CONTENT_LOADER_ID;
+
 import android.content.Context;
+import android.os.Bundle;
 import android.widget.BaseAdapter;
 
+import androidx.annotation.NonNull;
+import androidx.annotation.Nullable;
+import androidx.loader.app.LoaderManager;
+import androidx.loader.content.Loader;
+
 import com.android.settingslib.core.lifecycle.Lifecycle;
 import com.android.settingslib.core.lifecycle.LifecycleObserver;
 
@@ -60,9 +68,12 @@
         mControllerRendererPool = new ControllerRendererPool();
     }
 
-    void startCardContentLoading() {
-        final CardContentLoader cardContentLoader = new CardContentLoader();
-        cardContentLoader.setListener(this);
+    void loadContextualCards(PersonalSettingsFragment fragment) {
+        final CardContentLoaderCallbacks cardContentLoaderCallbacks =
+                new CardContentLoaderCallbacks(mContext);
+        cardContentLoaderCallbacks.setListener(this);
+        LoaderManager.getInstance(fragment).initLoader(CARD_CONTENT_LOADER_ID, null /* bundle */,
+                cardContentLoaderCallbacks);
     }
 
     private void loadCardControllers() {
@@ -140,4 +151,42 @@
     public ControllerRendererPool getControllerRendererPool() {
         return mControllerRendererPool;
     }
+
+    static class CardContentLoaderCallbacks implements
+            LoaderManager.LoaderCallbacks<List<ContextualCard>> {
+
+        private Context mContext;
+        private CardContentLoader.CardContentLoaderListener mListener;
+
+        CardContentLoaderCallbacks(Context context) {
+            mContext = context.getApplicationContext();
+        }
+
+        protected void setListener(CardContentLoader.CardContentLoaderListener listener) {
+            mListener = listener;
+        }
+
+        @NonNull
+        @Override
+        public Loader<List<ContextualCard>> onCreateLoader(int id, @Nullable Bundle bundle) {
+            if (id == CARD_CONTENT_LOADER_ID) {
+                return new CardContentLoader(mContext);
+            } else {
+                throw new IllegalArgumentException("Unknown loader id: " + id);
+            }
+        }
+
+        @Override
+        public void onLoadFinished(@NonNull Loader<List<ContextualCard>> loader,
+                List<ContextualCard> contextualCards) {
+            if (mListener != null) {
+                mListener.onFinishCardLoading(contextualCards);
+            }
+        }
+
+        @Override
+        public void onLoaderReset(@NonNull Loader<List<ContextualCard>> loader) {
+
+        }
+    }
 }
diff --git a/src/com/android/settings/homepage/ContextualCardRenderer.java b/src/com/android/settings/homepage/ContextualCardRenderer.java
index 94fdb43..315c09d 100644
--- a/src/com/android/settings/homepage/ContextualCardRenderer.java
+++ b/src/com/android/settings/homepage/ContextualCardRenderer.java
@@ -31,15 +31,15 @@
     int getViewType();
 
     /**
-     * When {@link ContextualCardsAdapter} calls {@link ContextualCardsAdapter#onCreateViewHolder(ViewGroup,
-     * int)}, this method will be called to retrieve the corresponding
+     * When {@link ContextualCardsAdapter} calls {@link ContextualCardsAdapter#onCreateViewHolder},
+     * this method will be called to retrieve the corresponding
      * {@link androidx.recyclerview.widget.RecyclerView.ViewHolder}.
      */
     RecyclerView.ViewHolder createViewHolder(View view);
 
     /**
-     * When {@link ContextualCardsAdapter} calls {@link ContextualCardsAdapter#onBindViewHolder(RecyclerView
-     * .ViewHolder, int)}, this method will be called to bind data to the
+     * When {@link ContextualCardsAdapter} calls {@link ContextualCardsAdapter#onBindViewHolder},
+     * this method will be called to bind data to the
      * {@link androidx.recyclerview.widget.RecyclerView.ViewHolder}.
      */
     void bindView(RecyclerView.ViewHolder holder, ContextualCard card);
diff --git a/src/com/android/settings/homepage/ContextualCardsAdapter.java b/src/com/android/settings/homepage/ContextualCardsAdapter.java
index e985343..53a47e0 100644
--- a/src/com/android/settings/homepage/ContextualCardsAdapter.java
+++ b/src/com/android/settings/homepage/ContextualCardsAdapter.java
@@ -27,8 +27,8 @@
 import java.util.ArrayList;
 import java.util.List;
 
-public class ContextualCardsAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder> implements
-        ContextualCardUpdateListener {
+public class ContextualCardsAdapter extends RecyclerView.Adapter<RecyclerView.ViewHolder>
+        implements ContextualCardUpdateListener {
     static final int SPAN_COUNT = 2;
 
     private static final String TAG = "ContextualCardsAdapter";
diff --git a/src/com/android/settings/homepage/PersonalSettingsFragment.java b/src/com/android/settings/homepage/PersonalSettingsFragment.java
index 2eb9663..4a0041e 100644
--- a/src/com/android/settings/homepage/PersonalSettingsFragment.java
+++ b/src/com/android/settings/homepage/PersonalSettingsFragment.java
@@ -43,7 +43,7 @@
     public void onCreate(Bundle savedInstanceState) {
         super.onCreate(savedInstanceState);
         mContextualCardManager = new ContextualCardManager(getContext(), getSettingsLifecycle());
-        mContextualCardManager.startCardContentLoading();
+        mContextualCardManager.loadContextualCards(this);
     }
 
     @Override
diff --git a/src/com/android/settings/network/NetworkDashboardFragment.java b/src/com/android/settings/network/NetworkDashboardFragment.java
index a2a2450..0279cfa 100644
--- a/src/com/android/settings/network/NetworkDashboardFragment.java
+++ b/src/com/android/settings/network/NetworkDashboardFragment.java
@@ -15,12 +15,15 @@
  */
 package com.android.settings.network;
 
+import static android.provider.Settings.ACTION_DATA_USAGE_SETTINGS;
 import static com.android.settings.network.MobilePlanPreferenceController
         .MANAGE_MOBILE_PLAN_DIALOG_ID;
 
 import android.app.Activity;
 import android.app.Dialog;
 import android.content.Context;
+import android.content.Intent;
+import android.content.pm.PackageManager;
 import android.icu.text.ListFormatter;
 import android.provider.SearchIndexableResource;
 import android.text.BidiFormatter;
@@ -45,6 +48,7 @@
 
 import java.util.ArrayList;
 import java.util.Arrays;
+import java.util.function.BooleanSupplier;
 import java.util.List;
 
 @SearchIndexable
@@ -158,24 +162,32 @@
         private final WifiMasterSwitchPreferenceController mWifiPreferenceController;
         private final MobileNetworkPreferenceController mMobileNetworkPreferenceController;
         private final TetherPreferenceController mTetherPreferenceController;
+        private final BooleanSupplier mHasDataUsageActivity;
 
         public SummaryProvider(Context context, SummaryLoader summaryLoader) {
             this(context, summaryLoader,
                     new WifiMasterSwitchPreferenceController(context, null),
                     new MobileNetworkPreferenceController(context),
-                    new TetherPreferenceController(context, null /* lifecycle */));
+                    new TetherPreferenceController(context, null /* lifecycle */),
+                    () -> {
+                        final Intent intent = new Intent(ACTION_DATA_USAGE_SETTINGS);
+                        final PackageManager pm = context.getPackageManager();
+                        return intent.resolveActivity(pm) != null;
+                    });
         }
 
         @VisibleForTesting(otherwise = VisibleForTesting.NONE)
         SummaryProvider(Context context, SummaryLoader summaryLoader,
                 WifiMasterSwitchPreferenceController wifiPreferenceController,
                 MobileNetworkPreferenceController mobileNetworkPreferenceController,
-                TetherPreferenceController tetherPreferenceController) {
+                TetherPreferenceController tetherPreferenceController,
+                BooleanSupplier hasDataUsageActivity) {
             mContext = context;
             mSummaryLoader = summaryLoader;
             mWifiPreferenceController = wifiPreferenceController;
             mMobileNetworkPreferenceController = mobileNetworkPreferenceController;
             mTetherPreferenceController = tetherPreferenceController;
+            mHasDataUsageActivity = hasDataUsageActivity;
         }
 
 
@@ -198,7 +210,7 @@
                 if (mMobileNetworkPreferenceController.isAvailable() && !TextUtils.isEmpty(mobileSummary)) {
                     summaries.add(mobileSummary);
                 }
-                if (!TextUtils.isEmpty(dataUsageSummary)) {
+                if (!TextUtils.isEmpty(dataUsageSummary) && mHasDataUsageActivity.getAsBoolean()) {
                     summaries.add(dataUsageSummary);
                 }
                 if (mTetherPreferenceController.isAvailable() && !TextUtils.isEmpty(hotspotSummary)) {
diff --git a/src/com/android/settings/users/UserSettings.java b/src/com/android/settings/users/UserSettings.java
index 5e961a6..6e3174d 100644
--- a/src/com/android/settings/users/UserSettings.java
+++ b/src/com/android/settings/users/UserSettings.java
@@ -964,9 +964,10 @@
                 mAddUserWhenLockedPreferenceController.getPreferenceKey());
         mAddUserWhenLockedPreferenceController.updateState(addUserOnLockScreen);
         mMultiUserFooterPreferenceController.updateState(null /* preference */);
+        mAddUser.setVisible(mUserCaps.mCanAddUser && Utils.isDeviceProvisioned(context)
+                && mUserCaps.mUserSwitcherEnabled);
         mUserListCategory.setVisible(mUserCaps.mUserSwitcherEnabled);
         if (!mUserCaps.mUserSwitcherEnabled) {
-            mAddUser.setVisible(false);
             return;
         }
 
diff --git a/tests/robotests/src/com/android/settings/applications/defaultapps/DefaultBrowserPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/applications/defaultapps/DefaultBrowserPreferenceControllerTest.java
index 0ef1cf3..4a482d0 100644
--- a/tests/robotests/src/com/android/settings/applications/defaultapps/DefaultBrowserPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/applications/defaultapps/DefaultBrowserPreferenceControllerTest.java
@@ -18,9 +18,9 @@
 
 import static com.google.common.truth.Truth.assertThat;
 
-import static org.mockito.ArgumentMatchers.eq;
 import static org.mockito.Matchers.any;
 import static org.mockito.Matchers.anyInt;
+import static org.mockito.Matchers.eq;
 import static org.mockito.Mockito.doReturn;
 import static org.mockito.Mockito.mock;
 import static org.mockito.Mockito.spy;
@@ -133,8 +133,11 @@
     @Test
     public void isBrowserDefault_onlyApp_shouldReturnTrue() {
         when(mPackageManager.getDefaultBrowserPackageNameAsUser(anyInt())).thenReturn(null);
+        final List<ResolveInfo> resolveInfos = new ArrayList<>();
+        final String PACKAGE_ONE = "pkg";
+        resolveInfos.add(createResolveInfo(PACKAGE_ONE));
         when(mPackageManager.queryIntentActivitiesAsUser(any(Intent.class), anyInt(), anyInt()))
-                .thenReturn(Collections.singletonList(new ResolveInfo()));
+            .thenReturn(resolveInfos);
 
         assertThat(mController.isBrowserDefault("pkg", 0)).isTrue();
     }
@@ -161,6 +164,15 @@
         assertThat(defaultBrowserInfo.size()).isEqualTo(2);
     }
 
+    @Test
+    public void getCandidates_shouldQueryActivityWithFlagsEquals0() {
+
+        mController.getCandidates(mPackageManager, 0 /* userId */);
+
+        verify(mPackageManager).queryIntentActivitiesAsUser(
+            any(Intent.class), eq(0) /* flags */, eq(0) /* userId */);
+    }
+
     private ResolveInfo createResolveInfo(String packageName) {
         final ResolveInfo info = new ResolveInfo();
         info.handleAllWebDataURI = true;
diff --git a/tests/robotests/src/com/android/settings/network/NetworkDashboardFragmentTest.java b/tests/robotests/src/com/android/settings/network/NetworkDashboardFragmentTest.java
index d6f86f9..469a537 100644
--- a/tests/robotests/src/com/android/settings/network/NetworkDashboardFragmentTest.java
+++ b/tests/robotests/src/com/android/settings/network/NetworkDashboardFragmentTest.java
@@ -79,7 +79,7 @@
         final SummaryLoader.SummaryProvider provider =
                 new NetworkDashboardFragment.SummaryProvider(mContext, summaryLoader,
                         wifiPreferenceController, mobileNetworkPreferenceController,
-                        tetherPreferenceController);
+                        tetherPreferenceController, () -> true);
 
         provider.setListening(false);
 
@@ -107,7 +107,7 @@
         final SummaryLoader.SummaryProvider provider =
                 new NetworkDashboardFragment.SummaryProvider(mContext, summaryLoader,
                         wifiPreferenceController, mobileNetworkPreferenceController,
-                        tetherPreferenceController);
+                        tetherPreferenceController, () -> true);
 
         provider.setListening(false);
 
@@ -121,4 +121,34 @@
 
         verify(summaryLoader).setSummary(provider, "Wi\u2011Fi and data usage");
     }
+
+    @Test
+    public void summaryProviderSetListening_noDataUsageActivity_shouldReturnNoDataUsageSummary() {
+        final WifiMasterSwitchPreferenceController wifiPreferenceController =
+                mock(WifiMasterSwitchPreferenceController.class);
+        final MobileNetworkPreferenceController mobileNetworkPreferenceController =
+                mock(MobileNetworkPreferenceController.class);
+        final TetherPreferenceController tetherPreferenceController =
+                mock(TetherPreferenceController.class);
+
+        final SummaryLoader summaryLoader = mock(SummaryLoader.class);
+        final SummaryLoader.SummaryProvider provider =
+                new NetworkDashboardFragment.SummaryProvider(mContext, summaryLoader,
+                        wifiPreferenceController, mobileNetworkPreferenceController,
+                        tetherPreferenceController, () -> false);
+
+        provider.setListening(false);
+
+        verifyZeroInteractions(summaryLoader);
+
+        when(wifiPreferenceController.isAvailable()).thenReturn(true);
+        when(mobileNetworkPreferenceController.isAvailable()).thenReturn(true);
+        when(tetherPreferenceController.isAvailable()).thenReturn(true);
+
+        provider.setListening(true);
+
+        verify(summaryLoader).setSummary(provider, "Wi\u2011Fi, mobile, and hotspot");
+    }
+
+
 }
diff --git a/tests/robotests/src/com/android/settings/users/UserSettingsTest.java b/tests/robotests/src/com/android/settings/users/UserSettingsTest.java
index 413d771..02c279e 100644
--- a/tests/robotests/src/com/android/settings/users/UserSettingsTest.java
+++ b/tests/robotests/src/com/android/settings/users/UserSettingsTest.java
@@ -212,4 +212,31 @@
 
     }
 
+    @Test
+    public void updateUserList_canAddUserAndSwitchUser_shouldShowAddUser() {
+        Settings.Global.putInt(mContext.getContentResolver(),
+            Settings.Global.DEVICE_PROVISIONED, 1);
+        final RestrictedPreference addUser = mock(RestrictedPreference.class);
+
+        mUserCapabilities.mCanAddUser = true;
+        mUserCapabilities.mDisallowAddUser = false;
+        mUserCapabilities.mUserSwitcherEnabled = true;
+
+        ReflectionHelpers.setField(mFragment, "mUserManager", mUserManager);
+        ReflectionHelpers.setField(mFragment, "mUserCaps", mUserCapabilities);
+        ReflectionHelpers.setField(mFragment, "mDefaultIconDrawable", mDefaultIconDrawable);
+        ReflectionHelpers.setField(mFragment, "mAddingUser", false);
+        mFragment.mMePreference = mMePreference;
+        mFragment.mUserListCategory = mock(PreferenceCategory.class);
+        mFragment.mAddUser = addUser;
+
+        doReturn(mock(PreferenceScreen.class)).when(mFragment).getPreferenceScreen();
+        doReturn("Test summary").when(mFragment).getString(anyInt(), anyInt());
+
+        mFragment.updateUserList();
+
+        verify(addUser).setVisible(true);
+
+    }
+
 }