Merge "Only add entry with unique package name to default browser list."
diff --git a/res/xml/configure_notification_settings.xml b/res/xml/configure_notification_settings.xml
index f563643..fbb464c 100644
--- a/res/xml/configure_notification_settings.xml
+++ b/res/xml/configure_notification_settings.xml
@@ -56,6 +56,7 @@
         android:title="@string/zen_mode_settings_title"
         settings:useAdminDisabledSummary="true"
         android:fragment="com.android.settings.notification.ZenModeSettings"
+        settings:controller="com.android.settings.notification.ZenModePreferenceController"
         settings:allowDividerAbove="false" />
 
     <!-- Empty category to draw divider -->
diff --git a/res/xml/gestures.xml b/res/xml/gestures.xml
index 650b1c4..9f69102 100644
--- a/res/xml/gestures.xml
+++ b/res/xml/gestures.xml
@@ -67,6 +67,6 @@
         android:key="gesture_prevent_ringing_summary"
         android:title="@string/gesture_prevent_ringing_screen_title"
         android:fragment="com.android.settings.gestures.PreventRingingGestureSettings"
-        settings:controller="com.android.settings.gestures.PreventRingingPreferenceController" />
+        settings:controller="com.android.settings.gestures.PreventRingingParentPreferenceController" />
 
 </PreferenceScreen>
diff --git a/res/xml/sound_settings.xml b/res/xml/sound_settings.xml
index 54a4190..d38a8e4 100644
--- a/res/xml/sound_settings.xml
+++ b/res/xml/sound_settings.xml
@@ -94,14 +94,15 @@
         android:order="-120"
         settings:useAdminDisabledSummary="true"
         settings:keywords="@string/keywords_sounds_and_notifications_interruptions"
-        settings:allowDividerAbove="true"/>
+        settings:allowDividerAbove="true"
+        settings:controller="com.android.settings.notification.ZenModePreferenceController" />
 
     <Preference
         android:key="gesture_prevent_ringing_sound"
         android:title="@string/gesture_prevent_ringing_sound_title"
         android:order="-110"
         android:fragment="com.android.settings.gestures.PreventRingingGestureSettings"
-        settings:controller="com.android.settings.gestures.PreventRingingPreferenceController" />
+        settings:controller="com.android.settings.gestures.PreventRingingParentPreferenceController" />
 
     <!-- Phone ringtone -->
     <com.android.settings.DefaultRingtonePreference
diff --git a/src/com/android/settings/accounts/AccountDashboardFragment.java b/src/com/android/settings/accounts/AccountDashboardFragment.java
index 281b1ba..fd15f4e 100644
--- a/src/com/android/settings/accounts/AccountDashboardFragment.java
+++ b/src/com/android/settings/accounts/AccountDashboardFragment.java
@@ -17,7 +17,6 @@
 
 import static android.provider.Settings.EXTRA_AUTHORITIES;
 
-import android.app.Activity;
 import android.content.Context;
 import android.icu.text.ListFormatter;
 import android.os.UserHandle;
@@ -27,6 +26,7 @@
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
+import com.android.settings.SettingsPreferenceFragment;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.dashboard.SummaryLoader;
 import com.android.settings.search.BaseSearchIndexProvider;
@@ -69,15 +69,23 @@
 
     @Override
     protected List<AbstractPreferenceController> createPreferenceControllers(Context context) {
-        final List<AbstractPreferenceController> controllers = new ArrayList<>();
         final String[] authorities = getIntent().getStringArrayExtra(EXTRA_AUTHORITIES);
+        return buildPreferenceControllers(context, this /* parent */, authorities);
+    }
+
+    private static List<AbstractPreferenceController> buildPreferenceControllers(Context context,
+            SettingsPreferenceFragment parent, String[] authorities) {
+        final List<AbstractPreferenceController> controllers = new ArrayList<>();
+
         final AccountPreferenceController accountPrefController =
-                new AccountPreferenceController(context, this, authorities);
-        getLifecycle().addObserver(accountPrefController);
+                new AccountPreferenceController(context, parent, authorities);
+        if (parent != null) {
+            parent.getLifecycle().addObserver(accountPrefController);
+        }
         controllers.add(accountPrefController);
-        controllers.add(new AutoSyncDataPreferenceController(context, this /*parent */));
-        controllers.add(new AutoSyncPersonalDataPreferenceController(context, this /*parent */));
-        controllers.add(new AutoSyncWorkDataPreferenceController(context, this /* parent */));
+        controllers.add(new AutoSyncDataPreferenceController(context, parent));
+        controllers.add(new AutoSyncPersonalDataPreferenceController(context, parent));
+        controllers.add(new AutoSyncWorkDataPreferenceController(context, parent));
         return controllers;
     }
 
@@ -122,13 +130,7 @@
     }
 
     public static final SummaryLoader.SummaryProviderFactory SUMMARY_PROVIDER_FACTORY
-            = new SummaryLoader.SummaryProviderFactory() {
-        @Override
-        public SummaryLoader.SummaryProvider createSummaryProvider(Activity activity,
-                SummaryLoader summaryLoader) {
-            return new SummaryProvider(activity, summaryLoader);
-        }
-    };
+            = (activity, summaryLoader) -> new SummaryProvider(activity, summaryLoader);
 
     public static final SearchIndexProvider SEARCH_INDEX_DATA_PROVIDER =
             new BaseSearchIndexProvider() {
@@ -139,5 +141,12 @@
                     sir.xmlResId = R.xml.accounts_dashboard_settings;
                     return Arrays.asList(sir);
                 }
+
+                @Override
+                public List<AbstractPreferenceController> createPreferenceControllers(
+                        Context context) {
+                    return buildPreferenceControllers(
+                            context, null /* parent */, null /* authorities*/);
+                }
             };
 }
\ No newline at end of file
diff --git a/src/com/android/settings/fingerprint/FingerprintEnrollFindSensor.java b/src/com/android/settings/fingerprint/FingerprintEnrollFindSensor.java
index 95a534c..03bba42 100644
--- a/src/com/android/settings/fingerprint/FingerprintEnrollFindSensor.java
+++ b/src/com/android/settings/fingerprint/FingerprintEnrollFindSensor.java
@@ -24,6 +24,7 @@
 import android.view.View;
 import android.widget.Button;
 
+import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
 import com.android.settings.Utils;
@@ -35,7 +36,8 @@
  */
 public class FingerprintEnrollFindSensor extends FingerprintEnrollBase {
 
-    private static final int CONFIRM_REQUEST = 1;
+    @VisibleForTesting
+    static final int CONFIRM_REQUEST = 1;
     private static final int ENROLLING = 2;
     public static final String EXTRA_KEY_LAUNCHED_CONFIRM = "launched_confirm_lock";
 
@@ -170,7 +172,7 @@
     @Override
     protected void onActivityResult(int requestCode, int resultCode, Intent data) {
         if (requestCode == CONFIRM_REQUEST) {
-            if (resultCode == RESULT_OK) {
+            if (resultCode == RESULT_OK && data != null) {
                 mToken = data.getByteArrayExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN);
                 overridePendingTransition(R.anim.suw_slide_next_in, R.anim.suw_slide_next_out);
                 getIntent().putExtra(ChooseLockSettingsHelper.EXTRA_KEY_CHALLENGE_TOKEN, mToken);
diff --git a/src/com/android/settings/fuelgauge/batterytip/BatteryManagerPreferenceController.java b/src/com/android/settings/fuelgauge/batterytip/BatteryManagerPreferenceController.java
index 8edc45e..1043a8e 100644
--- a/src/com/android/settings/fuelgauge/batterytip/BatteryManagerPreferenceController.java
+++ b/src/com/android/settings/fuelgauge/batterytip/BatteryManagerPreferenceController.java
@@ -20,14 +20,15 @@
 import android.content.Context;
 import android.os.UserManager;
 import android.provider.Settings;
-import androidx.annotation.VisibleForTesting;
-import androidx.preference.Preference;
 
 import com.android.settings.R;
 import com.android.settings.core.BasePreferenceController;
 import com.android.settings.fuelgauge.PowerUsageFeatureProvider;
 import com.android.settings.overlay.FeatureFactory;
 
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.Preference;
+
 /**
  * Preference controller to control the battery manager
  */
@@ -48,7 +49,7 @@
 
     @Override
     public int getAvailabilityStatus() {
-        return AVAILABLE;
+        return AVAILABLE_UNSEARCHABLE;
     }
 
     @Override
diff --git a/src/com/android/settings/gestures/GestureSettings.java b/src/com/android/settings/gestures/GestureSettings.java
index c2979a2..c4911fe 100644
--- a/src/com/android/settings/gestures/GestureSettings.java
+++ b/src/com/android/settings/gestures/GestureSettings.java
@@ -17,21 +17,15 @@
 package com.android.settings.gestures;
 
 import android.content.Context;
-import android.os.UserHandle;
 import android.provider.SearchIndexableResource;
-import androidx.annotation.NonNull;
-import androidx.annotation.Nullable;
 
 import com.android.internal.hardware.AmbientDisplayConfiguration;
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.settings.R;
 import com.android.settings.dashboard.DashboardFragment;
 import com.android.settings.search.BaseSearchIndexProvider;
-import com.android.settingslib.core.AbstractPreferenceController;
-import com.android.settingslib.core.lifecycle.Lifecycle;
 import com.android.settingslib.search.SearchIndexable;
 
-import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.List;
 
@@ -40,15 +34,6 @@
 
     private static final String TAG = "GestureSettings";
 
-    private static final String KEY_ASSIST = "gesture_assist_input_summary";
-    private static final String KEY_SWIPE_DOWN = "gesture_swipe_down_fingerprint_input_summary";
-    private static final String KEY_DOUBLE_TAP_POWER = "gesture_double_tap_power_input_summary";
-    private static final String KEY_DOUBLE_TWIST = "gesture_double_twist_input_summary";
-    private static final String KEY_DOUBLE_TAP_SCREEN = "gesture_double_tap_screen_input_summary";
-    private static final String KEY_PICK_UP = "gesture_pick_up_input_summary";
-    private static final String KEY_PREVENT_RINGING = "gesture_prevent_ringing_summary";
-    private static final String KEY_SWIPE_UP = "gesture_swipe_up_input_summary";
-
     private AmbientDisplayConfiguration mAmbientDisplayConfig;
 
     @Override
@@ -92,19 +77,10 @@
                 }
 
                 @Override
-                public List<String> getNonIndexableKeys(Context context) {
-                    List<String> keys = super.getNonIndexableKeys(context);
-                    // Duplicates in summary and details pages.
-                    keys.add(KEY_ASSIST);
-                    keys.add(KEY_SWIPE_DOWN);
-                    keys.add(KEY_DOUBLE_TAP_POWER);
-                    keys.add(KEY_DOUBLE_TWIST);
-                    keys.add(KEY_SWIPE_UP);
-                    keys.add(KEY_DOUBLE_TAP_SCREEN);
-                    keys.add(KEY_PICK_UP);
-                    keys.add(KEY_PREVENT_RINGING);
-
-                    return keys;
+                protected boolean isPageSearchEnabled(Context context) {
+                    // All rows in this screen can lead to a different page, so suppress everything
+                    // from this page to remove duplicates.
+                    return false;
                 }
             };
 }
diff --git a/src/com/android/settings/gestures/GesturesSettingPreferenceController.java b/src/com/android/settings/gestures/GesturesSettingPreferenceController.java
index 652e151..1074be0 100644
--- a/src/com/android/settings/gestures/GesturesSettingPreferenceController.java
+++ b/src/com/android/settings/gestures/GesturesSettingPreferenceController.java
@@ -19,7 +19,6 @@
 import android.content.ContentResolver;
 import android.content.Context;
 import android.provider.Settings;
-import androidx.annotation.NonNull;
 
 import com.android.internal.hardware.AmbientDisplayConfiguration;
 import com.android.settings.R;
@@ -30,6 +29,8 @@
 import java.util.ArrayList;
 import java.util.List;
 
+import androidx.annotation.NonNull;
+
 public class GesturesSettingPreferenceController extends BasePreferenceController {
     private final AssistGestureFeatureProvider mFeatureProvider;
     private List<AbstractPreferenceController> mGestureControllers;
@@ -51,7 +52,7 @@
         for (AbstractPreferenceController controller : mGestureControllers) {
             isAvailable = isAvailable || controller.isAvailable();
         }
-        return isAvailable ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+        return isAvailable ? AVAILABLE_UNSEARCHABLE : UNSUPPORTED_ON_DEVICE;
     }
 
     /**
diff --git a/src/com/android/settings/gestures/PreventRingingParentPreferenceController.java b/src/com/android/settings/gestures/PreventRingingParentPreferenceController.java
new file mode 100644
index 0000000..8814765
--- /dev/null
+++ b/src/com/android/settings/gestures/PreventRingingParentPreferenceController.java
@@ -0,0 +1,36 @@
+/*
+ * 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.
+ */
+
+package com.android.settings.gestures;
+
+import android.content.Context;
+
+import com.android.settings.core.BasePreferenceController;
+
+public class PreventRingingParentPreferenceController extends BasePreferenceController {
+
+    public PreventRingingParentPreferenceController(Context context, String preferenceKey) {
+        super(context, preferenceKey);
+    }
+
+    @Override
+    public int getAvailabilityStatus() {
+        return mContext.getResources().getBoolean(
+                com.android.internal.R.bool.config_volumeHushGestureEnabled)
+                ? AVAILABLE_UNSEARCHABLE : UNSUPPORTED_ON_DEVICE;
+    }
+
+}
diff --git a/src/com/android/settings/gestures/PreventRingingPreferenceController.java b/src/com/android/settings/gestures/PreventRingingPreferenceController.java
index c6bc3aa..be55151 100644
--- a/src/com/android/settings/gestures/PreventRingingPreferenceController.java
+++ b/src/com/android/settings/gestures/PreventRingingPreferenceController.java
@@ -24,14 +24,8 @@
 import android.content.Context;
 import android.os.Bundle;
 import android.provider.Settings;
-import androidx.annotation.VisibleForTesting;
-import androidx.preference.ListPreference;
-import androidx.preference.Preference;
-import androidx.preference.PreferenceScreen;
 
 import com.android.settings.R;
-import com.android.settings.core.BasePreferenceController;
-import com.android.settings.core.PreferenceControllerMixin;
 import com.android.settings.widget.VideoPreference;
 import com.android.settingslib.core.lifecycle.LifecycleObserver;
 import com.android.settingslib.core.lifecycle.events.OnCreate;
@@ -39,8 +33,13 @@
 import com.android.settingslib.core.lifecycle.events.OnResume;
 import com.android.settingslib.core.lifecycle.events.OnSaveInstanceState;
 
-public class PreventRingingPreferenceController extends BasePreferenceController
-        implements PreferenceControllerMixin, Preference.OnPreferenceChangeListener,
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
+
+public class PreventRingingPreferenceController extends PreventRingingParentPreferenceController
+        implements Preference.OnPreferenceChangeListener,
         LifecycleObserver, OnResume, OnPause, OnCreate, OnSaveInstanceState {
 
     private static final String PREF_KEY_VIDEO = "gesture_prevent_ringing_video";
@@ -59,9 +58,11 @@
 
     @Override
     public int getAvailabilityStatus() {
-        return mContext.getResources().getBoolean(
-                com.android.internal.R.bool.config_volumeHushGestureEnabled)
-                ? AVAILABLE : UNSUPPORTED_ON_DEVICE;
+        final int status = super.getAvailabilityStatus();
+        if (status == AVAILABLE_UNSEARCHABLE) {
+            return AVAILABLE;
+        }
+        return status;
     }
 
     @Override
diff --git a/src/com/android/settings/notification/ConfigureNotificationSettings.java b/src/com/android/settings/notification/ConfigureNotificationSettings.java
index cdc02c0..96a4eb6 100644
--- a/src/com/android/settings/notification/ConfigureNotificationSettings.java
+++ b/src/com/android/settings/notification/ConfigureNotificationSettings.java
@@ -24,8 +24,6 @@
 import android.os.Bundle;
 import android.os.UserHandle;
 import android.provider.SearchIndexableResource;
-import androidx.annotation.VisibleForTesting;
-import androidx.preference.Preference;
 
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
@@ -42,6 +40,9 @@
 import java.util.Arrays;
 import java.util.List;
 
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.Preference;
+
 @SearchIndexable
 public class ConfigureNotificationSettings extends DashboardFragment {
     private static final String TAG = "ConfigNotiSettings";
@@ -57,7 +58,6 @@
     static final String KEY_SWIPE_DOWN = "gesture_swipe_down_fingerprint_notifications";
 
     private static final String KEY_NOTI_DEFAULT_RINGTONE = "notification_default_ringtone";
-    private static final String KEY_ZEN_MODE = "zen_mode_notifications";
 
     private RingtonePreference mRequestPreference;
     private static final int REQUEST_CODE = 200;
@@ -111,7 +111,6 @@
             }
 
         });
-        controllers.add(new ZenModePreferenceController(context, lifecycle, KEY_ZEN_MODE));
         return controllers;
     }
 
@@ -220,7 +219,6 @@
                     keys.add(KEY_LOCKSCREEN);
                     keys.add(KEY_LOCKSCREEN_WORK_PROFILE);
                     keys.add(KEY_LOCKSCREEN_WORK_PROFILE_HEADER);
-                    keys.add(KEY_ZEN_MODE);
                     return keys;
                 }
             };
diff --git a/src/com/android/settings/notification/SoundSettings.java b/src/com/android/settings/notification/SoundSettings.java
index 7ad22a9..dbac1c2 100644
--- a/src/com/android/settings/notification/SoundSettings.java
+++ b/src/com/android/settings/notification/SoundSettings.java
@@ -27,10 +27,6 @@
 import android.provider.SearchIndexableResource;
 import android.text.TextUtils;
 
-import androidx.annotation.VisibleForTesting;
-import androidx.preference.ListPreference;
-import androidx.preference.Preference;
-
 import com.android.internal.logging.nano.MetricsProto;
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
 import com.android.settings.R;
@@ -50,13 +46,16 @@
 import java.util.Arrays;
 import java.util.List;
 
+import androidx.annotation.VisibleForTesting;
+import androidx.preference.ListPreference;
+import androidx.preference.Preference;
+
 @SearchIndexable
 public class SoundSettings extends DashboardFragment {
     private static final String TAG = "SoundSettings";
 
     private static final String SELECTED_PREFERENCE_KEY = "selected_preference";
     private static final int REQUEST_CODE = 200;
-    private static final String KEY_ZEN_MODE = "zen_mode";
     private static final int SAMPLE_CUTOFF = 2000;  // manually cap sample playback at 2 seconds
 
     @VisibleForTesting
@@ -190,7 +189,7 @@
                 onPreferenceDataChanged(listPreference));
         mMediaOutputControllerKey = use(MediaOutputPreferenceController.class).getPreferenceKey();
         use(HandsFreeProfileOutputPreferenceController.class).setCallback(listPreference ->
-            onPreferenceDataChanged(listPreference));
+                onPreferenceDataChanged(listPreference));
         mHfpOutputControllerKey =
                 use(HandsFreeProfileOutputPreferenceController.class).getPreferenceKey();
 
@@ -235,7 +234,6 @@
     private static List<AbstractPreferenceController> buildPreferenceControllers(Context context,
             SoundSettings fragment, Lifecycle lifecycle) {
         final List<AbstractPreferenceController> controllers = new ArrayList<>();
-        controllers.add(new ZenModePreferenceController(context, lifecycle, KEY_ZEN_MODE));
 
         // Volumes are added via xml
 
@@ -309,15 +307,6 @@
                     return buildPreferenceControllers(context, null /* fragment */,
                             null /* lifecycle */);
                 }
-
-                @Override
-                public List<String> getNonIndexableKeys(Context context) {
-                    List<String> keys = super.getNonIndexableKeys(context);
-                    // Duplicate results
-                    keys.add((new ZenModePreferenceController(context, null, KEY_ZEN_MODE))
-                            .getPreferenceKey());
-                    return keys;
-                }
             };
 
     // === Work Sound Settings ===
diff --git a/src/com/android/settings/notification/WorkSoundPreferenceController.java b/src/com/android/settings/notification/WorkSoundPreferenceController.java
index 108fbca..c11fbc8 100644
--- a/src/com/android/settings/notification/WorkSoundPreferenceController.java
+++ b/src/com/android/settings/notification/WorkSoundPreferenceController.java
@@ -32,11 +32,6 @@
 import android.os.UserHandle;
 import android.os.UserManager;
 import android.provider.Settings;
-import androidx.preference.Preference;
-import androidx.preference.Preference.OnPreferenceChangeListener;
-import androidx.preference.PreferenceGroup;
-import androidx.preference.PreferenceScreen;
-import androidx.preference.TwoStatePreference;
 
 import com.android.internal.annotations.VisibleForTesting;
 import com.android.internal.logging.nano.MetricsProto.MetricsEvent;
@@ -51,6 +46,14 @@
 import com.android.settingslib.core.lifecycle.events.OnPause;
 import com.android.settingslib.core.lifecycle.events.OnResume;
 
+import java.util.List;
+
+import androidx.preference.Preference;
+import androidx.preference.Preference.OnPreferenceChangeListener;
+import androidx.preference.PreferenceGroup;
+import androidx.preference.PreferenceScreen;
+import androidx.preference.TwoStatePreference;
+
 public class WorkSoundPreferenceController extends AbstractPreferenceController
         implements PreferenceControllerMixin, OnPreferenceChangeListener, LifecycleObserver,
         OnResume, OnPause {
@@ -96,10 +99,8 @@
 
     @Override
     public void displayPreference(PreferenceScreen screen) {
+        super.displayPreference(screen);
         mWorkPreferenceCategory = (PreferenceGroup) screen.findPreference(KEY_WORK_CATEGORY);
-        if (mWorkPreferenceCategory != null) {
-            mWorkPreferenceCategory.setVisible(isAvailable());
-        }
     }
 
     @Override
@@ -157,6 +158,18 @@
         return true;
     }
 
+    @Override
+    public void updateNonIndexableKeys(List<String> keys) {
+        if (isAvailable()) {
+            return;
+        }
+        keys.add(KEY_WORK_CATEGORY);
+        keys.add(KEY_WORK_USE_PERSONAL_SOUNDS);
+        keys.add(KEY_WORK_NOTIFICATION_RINGTONE);
+        keys.add(KEY_WORK_PHONE_RINGTONE);
+        keys.add(KEY_WORK_ALARM_RINGTONE);
+    }
+
     // === Phone & notification ringtone ===
 
     private boolean shouldShowRingtoneSettings() {
diff --git a/src/com/android/settings/notification/ZenModePreferenceController.java b/src/com/android/settings/notification/ZenModePreferenceController.java
index 0d94029..d70ffe2 100644
--- a/src/com/android/settings/notification/ZenModePreferenceController.java
+++ b/src/com/android/settings/notification/ZenModePreferenceController.java
@@ -23,38 +23,30 @@
 import android.os.Handler;
 import android.os.UserHandle;
 import android.provider.Settings;
-import androidx.preference.Preference;
-import androidx.preference.PreferenceScreen;
-import android.util.Slog;
 
-import com.android.settings.core.PreferenceControllerMixin;
-import com.android.settingslib.core.AbstractPreferenceController;
-import com.android.settingslib.core.lifecycle.Lifecycle;
+import com.android.settings.core.BasePreferenceController;
 import com.android.settingslib.core.lifecycle.LifecycleObserver;
 import com.android.settingslib.core.lifecycle.events.OnPause;
 import com.android.settingslib.core.lifecycle.events.OnResume;
 
-public class ZenModePreferenceController extends AbstractPreferenceController
-        implements LifecycleObserver, OnResume, OnPause, PreferenceControllerMixin {
+import androidx.preference.Preference;
+import androidx.preference.PreferenceScreen;
 
-    private final String mKey;
+public class ZenModePreferenceController extends BasePreferenceController
+        implements LifecycleObserver, OnResume, OnPause {
+
     private SettingObserver mSettingObserver;
     private ZenModeSettings.SummaryBuilder mSummaryBuilder;
 
-    public ZenModePreferenceController(Context context, Lifecycle lifecycle, String key) {
-        super(context);
+    public ZenModePreferenceController(Context context, String key) {
+        super(context, key);
         mSummaryBuilder = new ZenModeSettings.SummaryBuilder(context);
-
-        if (lifecycle != null) {
-            lifecycle.addObserver(this);
-        }
-        mKey = key;
     }
 
     @Override
     public void displayPreference(PreferenceScreen screen) {
         super.displayPreference(screen);
-        mSettingObserver = new SettingObserver(screen.findPreference(mKey));
+        mSettingObserver = new SettingObserver(screen.findPreference(getPreferenceKey()));
     }
 
     @Override
@@ -72,13 +64,8 @@
     }
 
     @Override
-    public String getPreferenceKey() {
-        return mKey;
-    }
-
-    @Override
-    public boolean isAvailable() {
-        return true;
+    public int getAvailabilityStatus() {
+        return AVAILABLE_UNSEARCHABLE;
     }
 
     @Override
diff --git a/src/com/android/settings/notification/ZenModeStarredContactsPreferenceController.java b/src/com/android/settings/notification/ZenModeStarredContactsPreferenceController.java
index 28475b6..10a7b56 100644
--- a/src/com/android/settings/notification/ZenModeStarredContactsPreferenceController.java
+++ b/src/com/android/settings/notification/ZenModeStarredContactsPreferenceController.java
@@ -68,7 +68,10 @@
     public void displayPreference(PreferenceScreen screen) {
         super.displayPreference(screen);
         mPreference = screen.findPreference(KEY);
-        mPreference.setOnPreferenceClickListener(this);
+
+        if (mPreference != null) {
+            mPreference.setOnPreferenceClickListener(this);
+        }
     }
 
     @Override
diff --git a/src/com/android/settings/security/LockscreenDashboardFragment.java b/src/com/android/settings/security/LockscreenDashboardFragment.java
index 32f4b92..9669863 100644
--- a/src/com/android/settings/security/LockscreenDashboardFragment.java
+++ b/src/com/android/settings/security/LockscreenDashboardFragment.java
@@ -159,6 +159,7 @@
                     final List<String> niks = super.getNonIndexableKeys(context);
                     niks.add(KEY_ADD_USER_FROM_LOCK_SCREEN);
                     niks.add(KEY_LOCK_SCREEN_NOTIFICATON_WORK_PROFILE);
+                    niks.add(KEY_LOCK_SCREEN_NOTIFICATON_WORK_PROFILE_HEADER);
                     return niks;
                 }
             };
diff --git a/tests/robotests/src/com/android/settings/fingerprint/FingerprintEnrollFindSensorTest.java b/tests/robotests/src/com/android/settings/fingerprint/FingerprintEnrollFindSensorTest.java
index e83e93d..1fe0931 100644
--- a/tests/robotests/src/com/android/settings/fingerprint/FingerprintEnrollFindSensorTest.java
+++ b/tests/robotests/src/com/android/settings/fingerprint/FingerprintEnrollFindSensorTest.java
@@ -22,6 +22,7 @@
 import static org.mockito.Mockito.verify;
 import static org.robolectric.RuntimeEnvironment.application;
 
+import android.app.Activity;
 import android.content.ComponentName;
 import android.content.Intent;
 import android.hardware.fingerprint.FingerprintManager;
@@ -151,4 +152,12 @@
 
         return callbackCaptor.getValue();
     }
+
+    @Test
+    public void onActivityResult_withNullIntentShouldNotCrash() {
+        // this should not crash
+        mActivity.onActivityResult(FingerprintEnrollFindSensor.CONFIRM_REQUEST, Activity.RESULT_OK,
+            null);
+        assertThat(Shadows.shadowOf(mActivity).getResultCode()).isEqualTo(Activity.RESULT_CANCELED);
+    }
 }
diff --git a/tests/robotests/src/com/android/settings/gestures/PreventRingingParentPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/gestures/PreventRingingParentPreferenceControllerTest.java
new file mode 100644
index 0000000..33a00fa
--- /dev/null
+++ b/tests/robotests/src/com/android/settings/gestures/PreventRingingParentPreferenceControllerTest.java
@@ -0,0 +1,69 @@
+/*
+ * 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.
+ */
+
+package com.android.settings.gestures;
+
+import static com.android.settings.core.BasePreferenceController.AVAILABLE_UNSEARCHABLE;
+import static com.google.common.truth.Truth.assertThat;
+import static org.mockito.Mockito.spy;
+import static org.mockito.Mockito.when;
+
+import android.content.Context;
+import android.content.res.Resources;
+
+import com.android.settings.testutils.SettingsRobolectricTestRunner;
+
+import org.junit.Before;
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.mockito.Mock;
+import org.mockito.MockitoAnnotations;
+import org.robolectric.RuntimeEnvironment;
+
+@RunWith(SettingsRobolectricTestRunner.class)
+public class PreventRingingParentPreferenceControllerTest {
+
+    @Mock
+    private Resources mResources;
+
+    private Context mContext;
+    private PreventRingingParentPreferenceController mController;
+
+    @Before
+    public void setUp() {
+        MockitoAnnotations.initMocks(this);
+        mContext = spy(RuntimeEnvironment.application);
+        when(mContext.getResources()).thenReturn(mResources);
+
+        mController = new PreventRingingParentPreferenceController(mContext, "test_key");
+    }
+
+    @Test
+    public void testIsAvailable_configIsTrue_shouldAvailableUnSearchable() {
+        when(mResources.getBoolean(
+                com.android.internal.R.bool.config_volumeHushGestureEnabled)).thenReturn(true);
+
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE_UNSEARCHABLE);
+    }
+
+    @Test
+    public void testIsAvailable_configIsFalse_shouldReturnFalse() {
+        when(mResources.getBoolean(
+                com.android.internal.R.bool.config_volumeHushGestureEnabled)).thenReturn(false);
+
+        assertThat(mController.isAvailable()).isFalse();
+    }
+}
diff --git a/tests/robotests/src/com/android/settings/notification/ZenModePreferenceControllerTest.java b/tests/robotests/src/com/android/settings/notification/ZenModePreferenceControllerTest.java
index 3ea4471..ece25e2 100644
--- a/tests/robotests/src/com/android/settings/notification/ZenModePreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/notification/ZenModePreferenceControllerTest.java
@@ -16,6 +16,7 @@
 
 package com.android.settings.notification;
 
+import static com.android.settings.core.BasePreferenceController.AVAILABLE_UNSEARCHABLE;
 import static com.google.common.truth.Truth.assertThat;
 import static org.mockito.Matchers.anyString;
 import static org.mockito.Mockito.doReturn;
@@ -27,7 +28,6 @@
 import android.app.NotificationManager;
 import android.app.NotificationManager.Policy;
 import android.content.Context;
-import androidx.preference.Preference;
 
 import com.android.settings.R;
 import com.android.settings.testutils.SettingsRobolectricTestRunner;
@@ -40,6 +40,8 @@
 import org.robolectric.shadows.ShadowApplication;
 import org.robolectric.util.ReflectionHelpers;
 
+import androidx.preference.Preference;
+
 @RunWith(SettingsRobolectricTestRunner.class)
 public class ZenModePreferenceControllerTest {
 
@@ -61,7 +63,7 @@
         ShadowApplication shadowApplication = ShadowApplication.getInstance();
         shadowApplication.setSystemService(Context.NOTIFICATION_SERVICE, mNotificationManager);
         mContext = shadowApplication.getApplicationContext();
-        mController = new ZenModePreferenceController(mContext, null, KEY_ZEN_MODE);
+        mController = new ZenModePreferenceController(mContext, KEY_ZEN_MODE);
         when(mNotificationManager.getNotificationPolicy()).thenReturn(mPolicy);
         mSummaryBuilder = spy(new ZenModeSettings.SummaryBuilder(mContext));
         ReflectionHelpers.setField(mController, "mSummaryBuilder", mSummaryBuilder);
@@ -69,8 +71,8 @@
     }
 
     @Test
-    public void isAlwaysAvailable() {
-        assertThat(mController.isAvailable()).isTrue();
+    public void isAvailable_unsearchable() {
+        assertThat(mController.getAvailabilityStatus()).isEqualTo(AVAILABLE_UNSEARCHABLE);
     }
 
     @Test
diff --git a/tests/robotests/src/com/android/settings/notification/ZenModeStarredContactsPreferenceControllerTest.java b/tests/robotests/src/com/android/settings/notification/ZenModeStarredContactsPreferenceControllerTest.java
index 064c091..ad8e0de 100644
--- a/tests/robotests/src/com/android/settings/notification/ZenModeStarredContactsPreferenceControllerTest.java
+++ b/tests/robotests/src/com/android/settings/notification/ZenModeStarredContactsPreferenceControllerTest.java
@@ -190,4 +190,13 @@
             assertThat(contacts.get(i)).isNotNull();
         }
     }
+
+    @Test
+    public void nullPreference_displayPreference() {
+        when(mPreferenceScreen.findPreference(mMessagesController.getPreferenceKey()))
+                .thenReturn(null);
+
+        // should not throw a null pointer
+        mMessagesController.displayPreference(mPreferenceScreen);
+    }
 }