Merge "Add handling for gesture settings for double twist for camera flip." into nyc-mr1-dev
diff --git a/AndroidManifest.xml b/AndroidManifest.xml
index 6b79f19..e633741 100644
--- a/AndroidManifest.xml
+++ b/AndroidManifest.xml
@@ -2933,6 +2933,8 @@
                        android:value="com.android.settings.category.device" />
             <meta-data android:name="com.android.settings.FRAGMENT_CLASS"
                        android:value="com.android.settings.gestures.GestureSettings" />
+            <meta-data android:name="com.android.settings.summary"
+                       android:resource="@string/gesture_preference_summary" />
         </activity>
 
         <activity android:name="BackupSettingsActivity"
diff --git a/proguard.flags b/proguard.flags
index f3c218a..040fa6c 100644
--- a/proguard.flags
+++ b/proguard.flags
@@ -20,6 +20,7 @@
 -keep class com.android.settings.overlay.FeatureFactoryImpl
 -keep class com.android.settings.accessibility.*FragmentForSetupWizard
 -keep class com.android.settings.display.*FragmentForSetupWizard
+-keep class com.android.settings.display.NightDisplaySettings
 
 # Keep click responders
 -keepclassmembers class com.android.settings.inputmethod.UserDictionaryAddWordActivity {
diff --git a/res/layout/device_profiles_settings.xml b/res/layout/device_profiles_settings.xml
index bd78bea..260fa05 100644
--- a/res/layout/device_profiles_settings.xml
+++ b/res/layout/device_profiles_settings.xml
@@ -14,48 +14,56 @@
      limitations under the License.
 -->
 
-<LinearLayout
+<ScrollView
     xmlns:android="http://schemas.android.com/apk/res/android"
     android:layout_width="match_parent"
     android:layout_height="wrap_content"
     android:paddingStart="25dp"
-    android:orientation="vertical">
-
-    <TextView
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:text="@string/bluetooth_preference_paired_dialog_name_label"
-        android:textAppearance="@android:style/TextAppearance.Material.Body1"
-        android:textColor="?android:attr/textColorSecondary"
-        android:textDirection="locale"
-        android:paddingTop="16dp"
-        style="@style/bt_item_label" />
-
-    <EditText
-        android:id="@+id/name"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:inputType="textNoSuggestions"
-        android:maxLength="@integer/bluetooth_name_length"
-        android:singleLine="true"
-        android:paddingBottom="@dimen/bluetooth_dialog_padding"
-        android:textDirection="locale"
-        style="@style/bt_item_edit_content" />
-
-    <TextView
-        android:id="@+id/profiles_label"
-        android:layout_width="match_parent"
-        android:layout_height="wrap_content"
-        android:paddingTop="16dp"
-        android:paddingBottom="4dp"
-        android:text="@string/bluetooth_device_advanced_profile_header_title"
-        android:textAppearance="@android:style/TextAppearance.Material.Body1"
-        android:textColor="?android:attr/textColorSecondary" />
+    android:paddingEnd="25dp">
 
     <LinearLayout
-        android:id="@+id/profiles_section"
-        android:orientation="vertical"
         android:layout_width="match_parent"
-        android:layout_height="wrap_content" />
+        android:layout_height="wrap_content"
+        android:orientation="vertical">
 
-</LinearLayout>
+        <TextView
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/bluetooth_preference_paired_dialog_name_label"
+            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textColor="?android:attr/textColorSecondary"
+            android:textDirection="locale"
+            android:paddingTop="16dp"
+            style="@style/bt_item_label"/>
+
+        <EditText
+            android:id="@+id/name"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:inputType="textNoSuggestions"
+            android:maxLength="@integer/bluetooth_name_length"
+            android:singleLine="true"
+            android:paddingBottom="@dimen/bluetooth_dialog_padding"
+            android:textDirection="locale"
+            style="@style/bt_item_edit_content"/>
+
+        <TextView
+            android:id="@+id/profiles_label"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:paddingTop="16dp"
+            android:paddingBottom="4dp"
+            android:text="@string/bluetooth_device_advanced_profile_header_title"
+            android:textAppearance="@android:style/TextAppearance.Material.Body1"
+            android:textColor="?android:attr/textColorSecondary"/>
+
+
+        <LinearLayout
+            android:id="@+id/profiles_section"
+            android:orientation="vertical"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"/>
+
+    </LinearLayout>
+
+</ScrollView>
diff --git a/res/layout/support_tile.xml b/res/layout/support_tile.xml
index 5f7ced4..053f748 100644
--- a/res/layout/support_tile.xml
+++ b/res/layout/support_tile.xml
@@ -21,7 +21,7 @@
     android:layout_height="wrap_content"
     android:background="?android:attr/selectableItemBackground"
     android:gravity="center_vertical"
-    android:minHeight="@dimen/dashboard_tile_minimum_height"
+    android:minHeight="@dimen/support_tile_min_height"
     android:orientation="horizontal">
     <ImageView
         android:id="@android:id/icon"
diff --git a/res/layout/support_tile_spacer.xml b/res/layout/support_tile_spacer.xml
new file mode 100644
index 0000000..95aea0b
--- /dev/null
+++ b/res/layout/support_tile_spacer.xml
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!--
+    Copyright (C) 2016 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.
+-->
+
+<Space
+    xmlns:android="http://schemas.android.com/apk/res/android"
+    android:layout_width="match_parent"
+    android:layout_height="@dimen/support_spacer_height"
+    android:background="@color/card_background"/>
diff --git a/res/values/dimens.xml b/res/values/dimens.xml
index 09cd8f0..b2d0570 100755
--- a/res/values/dimens.xml
+++ b/res/values/dimens.xml
@@ -300,4 +300,9 @@
     <dimen name="gestures_settings_padding_top_bottom">20dp</dimen>
     <dimen name="gestures_play_button_size">36dp</dimen>
     <dimen name="gesture_animation_padding">0dp</dimen>
+
+    <!-- Support tile minimum height -->
+    <dimen name="support_tile_min_height">48dp</dimen>
+    <!-- support spacer layout height -->
+    <dimen name="support_spacer_height">8dp</dimen>
 </resources>
diff --git a/res/values/strings.xml b/res/values/strings.xml
index 369210f..c6b278c 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -2133,6 +2133,39 @@
     <!-- Sound & display settings screen, setting option summary to enable adaptive brightness [CHAR LIMIT=100] -->
     <string name="auto_brightness_summary">Optimize brightness level for available light</string>
 
+    <!-- Night display screen, setting option name to enable night display. [CHAR LIMIT=30] -->
+    <string name="night_display_title">Night display</string>
+    <!-- Night display screen, description of night display feature. [CHAR LIMIT=NONE] -->
+    <string name="night_display_text">Night display tints your screen red at night. This makes it easier to look at your screen in dim light and may help you fall asleep more easily.</string>
+    <!-- Night display screen, setting option name to configure whether night display turn on/off automatically. [CHAR LIMIT=30] -->
+    <string name="night_display_auto_mode_title">Turn on automatically</string>
+    <!-- Night display screen, setting option value for night display to *never* turn on/off automatically. [CHAR LIMIT=30] -->
+    <string name="night_display_auto_mode_never">Never</string>
+    <!-- Night display screen, setting option value for night display to turn on/off automatically according to a user defined schedule. [CHAR LIMIT=30] -->
+    <string name="night_display_auto_mode_custom">Custom schedule</string>
+    <!-- Night display screen, setting option value for night display to turn on/off automatically at sunset/sunrise. [CHAR LIMIT=30] -->
+    <string name="night_display_auto_mode_twilight">Sunset to sunrise</string>
+    <!-- Night display screen, setting option name to configure time to automatically turn on night display. [CHAR LIMIT=30] -->
+    <string name="night_display_start_time_title">Start time</string>
+    <!-- Night display screen, setting option name to configure time to automatically turn off night display. [CHAR LIMIT=30] -->
+    <string name="night_display_end_time_title">End time</string>
+    <!-- Display settings screen, summary format of night display when off. [CHAR LIMIT=NONE] -->
+    <string name="night_display_summary_off">Off / <xliff:g name="auto_mode_summary" example="Never turn on automatically">%1$s</xliff:g></string>
+    <!-- Display settings screen, summary of night display when off and will *never* turn on automatically. [CHAR LIMIT=NONE] -->
+    <string name="night_display_summary_off_auto_mode_never">Never turn on automatically</string>
+    <!-- Display settings screen, summary format of night display when off and will turn on automatically at a user defined time. [CHAR LIMIT=NONE] -->
+    <string name="night_display_summary_off_auto_mode_custom">Turn on automatically at <xliff:g name="time" example="6 AM">%1$s</xliff:g></string>
+    <!-- Display settings screen, summary of night display when off and will turn on automatically at sunset. [CHAR LIMIT=NONE] -->
+    <string name="night_display_summary_off_auto_mode_twilight">Turn on automatically at sunset</string>
+    <!-- Display settings screen, summary format of night display when on. [CHAR LIMIT=NONE] -->
+    <string name="night_display_summary_on">On / <xliff:g name="auto_mode_summary" example="Never turn off automatically">%1$s</xliff:g></string>
+    <!-- Display settings screen, summary of night display when on and will *never* turn off automatically. [CHAR LIMIT=NONE] -->
+    <string name="night_display_summary_on_auto_mode_never">Never turn off automatically</string>
+    <!-- Display settings screen, summary format of night display when on and will turn off automatically at a user defined time. [CHAR LIMIT=NONE] -->
+    <string name="night_display_summary_on_auto_mode_custom">Turn off automatically at <xliff:g name="time" example="10 PM">%1$s</xliff:g></string>
+    <!-- Display settings screen, summary of night display when on and will turn off automatically at sunrise. [CHAR LIMIT=NONE] -->
+    <string name="night_display_summary_on_auto_mode_twilight">Turn off automatically at sunrise</string>
+
     <!-- Sound & display settings screen, setting option name to change screen timeout -->
     <string name="screen_timeout">Sleep</string>
     <!-- Sound & display settings screen, setting option name to change screen timeout [CHAR LIMIT=30] -->
@@ -5825,6 +5858,7 @@
     <string name="keywords_display">screen, touchscreen</string>
     <string name="keywords_display_brightness_level">dim screen, touchscreen, battery</string>
     <string name="keywords_display_auto_brightness">dim screen, touchscreen, battery</string>
+    <string name="keywords_display_night_display">dim screen, night, tint</string>
     <string name="keywords_display_wallpaper">background, personalize, customize display</string>
     <string name="keywords_display_font_size">text size</string>
     <string name="keywords_display_cast_screen">project, cast</string>
@@ -7652,29 +7686,32 @@
     <!-- Preference title for gesture settings [CHAR LIMIT=25]-->
     <string name="gesture_preference_title">Gestures</string>
 
+    <!-- Preference summary for gesture settings [CHAR LIMIT=NONE]-->
+    <string name="gesture_preference_summary">Quick gestures to control your phone</string>
+
     <!-- Title text for double tap power for camera [CHAR LIMIT=60]-->
     <string name="double_tap_power_for_camera_title">Jump to Camera</string>
 
     <!-- Summary text for double tap power for camera [CHAR LIMIT=160]-->
-    <string name="double_tap_power_for_camera_summary">To quickly open camera, just double-tap the power button. Works from any screen.</string>
+    <string name="double_tap_power_for_camera_summary">To quickly open camera, just double-tap the power button. Works from any screen</string>
 
     <!-- Title text for double twist for camera mode [CHAR LIMIT=60]-->
     <string name="double_twist_for_camera_mode_title">Flip camera</string>
 
     <!-- Summary text for double twist for camera mode  [CHAR LIMIT=160]-->
-    <string name="double_twist_for_camera_mode_summary">To switch between front and back cameras, double-twist.</string>
+    <string name="double_twist_for_camera_mode_summary">To switch between front and back cameras, double-twist</string>
 
     <!-- Title text for ambient display [CHAR LIMIT=60]-->
     <string name="ambient_display_title">Quick screen check</string>
 
     <!-- Summary text for ambient display [CHAR LIMIT=160]-->
-    <string name="ambient_display_summary">To check your phone without waking it up fully, nudge or pick it up.</string>
+    <string name="ambient_display_summary">To check your phone without waking it up, double-tap the screen or raise the device</string>
 
     <!-- Title text for fingerprint swipe for notifications [CHAR LIMIT=60]-->
     <string name="fingerprint_swipe_for_notifications_title">Swipe for notifications</string>
 
     <!-- Summary text for fingerprint swipe for notifications [CHAR LIMIT=160]-->
-    <string name="fingerprint_swipe_for_notifications_summary">To check your notifications from any screen, swipe down on the fingerprint sensor.</string>
+    <string name="fingerprint_swipe_for_notifications_summary">To check your notifications from any screen, swipe down on the fingerprint sensor</string>
 
     <!-- Switch text for each gesture setting state -->
     <string name="gesture_setting_on">On</string>
diff --git a/res/xml/display_settings.xml b/res/xml/display_settings.xml
index b540c8f..0630b55 100644
--- a/res/xml/display_settings.xml
+++ b/res/xml/display_settings.xml
@@ -32,6 +32,12 @@
                 settings:keywords="@string/keywords_display_auto_brightness"
                 android:summary="@string/auto_brightness_summary" />
 
+        <com.android.settings.display.NightDisplayPreference
+                android:key="night_display"
+                android:title="@string/night_display_title"
+                android:fragment="com.android.settings.display.NightDisplaySettings"
+                settings:keywords="@string/keywords_display_night_display" />
+
         <!-- Hide night mode for now
         <ListPreference
             android:key="night_mode"
@@ -75,7 +81,7 @@
         <PreferenceScreen
                 android:key="doze"
                 android:title="@string/doze_title"
-                android:summary="@string/doze_summary"
+                android:summary="@string/ambient_display_summary"
                 android:fragment="com.android.settings.gestures.GestureSettings" >
                 <extra android:name="gesture_scroll_to_preference"
                        android:value="gesture_pick_up_and_nudge" />
diff --git a/res/xml/gesture_settings.xml b/res/xml/gesture_settings.xml
index 5adc311..78f65a6 100644
--- a/res/xml/gesture_settings.xml
+++ b/res/xml/gesture_settings.xml
@@ -41,6 +41,6 @@
         android:key="gesture_pick_up_and_nudge"
         android:title="@string/ambient_display_title"
         android:summary="@string/ambient_display_summary"
-        settings:animation="@raw/gesture_ambient_move_lift"/>
+        settings:animation="@raw/gesture_ambient_tap"/>
 
 </PreferenceScreen>
\ No newline at end of file
diff --git a/res/xml/night_display_settings.xml b/res/xml/night_display_settings.xml
new file mode 100644
index 0000000..531f606
--- /dev/null
+++ b/res/xml/night_display_settings.xml
@@ -0,0 +1,41 @@
+<?xml version="1.0" encoding="utf-8"?>
+<!-- Copyright (C) 2016 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.
+-->
+
+<PreferenceScreen
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:settings="http://schemas.android.com/apk/res-auto"
+        android:title="@string/night_display_title">
+
+    <DropDownPreference
+            android:key="night_display_auto_mode"
+            android:title="@string/night_display_auto_mode_title"
+            android:persistent="false"
+            android:summary="%s" />
+
+    <Preference
+            android:key="night_display_start_time"
+            android:title="@string/night_display_start_time_title" />
+
+    <Preference
+            android:key="night_display_end_time"
+            android:title="@string/night_display_end_time_title" />
+
+    <com.android.settings.fuelgauge.WallOfTextPreference
+            android:summary="@string/night_display_text"
+            android:selectable="false"
+            settings:allowDividerAbove="true" />
+
+</PreferenceScreen>
\ No newline at end of file
diff --git a/src/com/android/settings/DisplaySettings.java b/src/com/android/settings/DisplaySettings.java
index bb10570..2821eb2 100644
--- a/src/com/android/settings/DisplaySettings.java
+++ b/src/com/android/settings/DisplaySettings.java
@@ -44,6 +44,7 @@
 import android.text.TextUtils;
 import android.util.Log;
 
+import com.android.internal.app.NightDisplayController;
 import com.android.internal.logging.MetricsLogger;
 import com.android.internal.logging.MetricsProto.MetricsEvent;
 import com.android.internal.view.RotationPolicy;
@@ -83,6 +84,7 @@
     private static final String KEY_TAP_TO_WAKE = "tap_to_wake";
     private static final String KEY_AUTO_BRIGHTNESS = "auto_brightness";
     private static final String KEY_AUTO_ROTATE = "auto_rotate";
+    private static final String KEY_NIGHT_DISPLAY = "night_display";
     private static final String KEY_NIGHT_MODE = "night_mode";
     private static final String KEY_CAMERA_GESTURE = "camera_gesture";
     private static final String KEY_WALLPAPER = "wallpaper";
@@ -129,6 +131,10 @@
             removePreference(KEY_AUTO_BRIGHTNESS);
         }
 
+        if (!NightDisplayController.isAvailable(activity)) {
+            removePreference(KEY_NIGHT_DISPLAY);
+        }
+
         if (isLiftToWakeAvailable(activity)) {
             mLiftToWakePreference = (SwitchPreference) findPreference(KEY_LIFT_TO_WAKE);
             mLiftToWakePreference.setOnPreferenceChangeListener(this);
@@ -496,6 +502,9 @@
                     if (!isAutomaticBrightnessAvailable(context.getResources())) {
                         result.add(KEY_AUTO_BRIGHTNESS);
                     }
+                    if (!NightDisplayController.isAvailable(context)) {
+                        result.add(KEY_NIGHT_DISPLAY);
+                    }
                     if (!isLiftToWakeAvailable(context)) {
                         result.add(KEY_LIFT_TO_WAKE);
                     }
diff --git a/src/com/android/settings/dashboard/SupportItemAdapter.java b/src/com/android/settings/dashboard/SupportItemAdapter.java
index 4e9153c..52440e9 100644
--- a/src/com/android/settings/dashboard/SupportItemAdapter.java
+++ b/src/com/android/settings/dashboard/SupportItemAdapter.java
@@ -60,6 +60,7 @@
     private static final int TYPE_ESCALATION_OPTIONS_OFFLINE =
             R.layout.support_offline_escalation_options;
     private static final int TYPE_SUPPORT_TILE = R.layout.support_tile;
+    private static final int TYPE_SUPPORT_TILE_SPACER = R.layout.support_tile_spacer;
     private static final int TYPE_SIGN_IN_BUTTON = R.layout.support_sign_in_button;
 
     private final Activity mActivity;
@@ -111,6 +112,8 @@
             case TYPE_ESCALATION_OPTIONS_OFFLINE:
                 bindOfflineEscalationOptions(holder, (OfflineEscalationData) data);
                 break;
+            case TYPE_SUPPORT_TILE_SPACER:
+                break;
             default:
                 bindSupportTile(holder, data);
                 break;
@@ -219,7 +222,9 @@
 
     private void addOfflineEscalationCards() {
         final CharSequence operatingHours;
-        if (mSupportFeatureProvider.isAlwaysOperating(PHONE, mSelectedCountry)) {
+        final boolean isPhoneSupportAlwaysOperating =
+                mSupportFeatureProvider.isAlwaysOperating(PHONE, mSelectedCountry);
+        if (isPhoneSupportAlwaysOperating) {
             operatingHours = mActivity.getString(R.string.support_escalation_24_7_summary);
         } else {
             operatingHours = mSupportFeatureProvider.getOperationHours(mActivity,
@@ -231,7 +236,9 @@
                         mSelectedCountry, true /* isTollFree */))
                 .setTolledPhone(mSupportFeatureProvider.getSupportPhones(
                         mSelectedCountry, false /* isTollFree */))
-                .setTileTitle(R.string.support_escalation_title)
+                .setTileTitle(isPhoneSupportAlwaysOperating
+                        ? R.string.support_escalation_24_7_title
+                        : R.string.support_escalation_title)
                 .setTileSummary(operatingHours)
                 .build());
     }
@@ -246,6 +253,7 @@
     }
 
     private void addMoreHelpItems() {
+        mSupportData.add(new SupportData.Builder(mActivity, TYPE_SUPPORT_TILE_SPACER).build());
         mSupportData.add(new SupportData.Builder(mActivity, TYPE_SUPPORT_TILE)
                 .setIcon(R.drawable.ic_help_24dp)
                 .setTileTitle(R.string.support_help_feedback_title)
diff --git a/src/com/android/settings/display/NightDisplayPreference.java b/src/com/android/settings/display/NightDisplayPreference.java
new file mode 100644
index 0000000..73ecf49
--- /dev/null
+++ b/src/com/android/settings/display/NightDisplayPreference.java
@@ -0,0 +1,126 @@
+/*
+ * Copyright (C) 2016 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.display;
+
+import android.content.Context;
+import android.support.v7.preference.Preference;
+import android.util.AttributeSet;
+
+import com.android.internal.app.NightDisplayController;
+import com.android.settings.R;
+
+import java.text.DateFormat;
+import java.util.Calendar;
+import java.util.TimeZone;
+
+public class NightDisplayPreference extends Preference implements NightDisplayController.Callback {
+
+    private NightDisplayController mController;
+    private DateFormat mTimeFormatter;
+
+    public NightDisplayPreference(Context context, AttributeSet attrs) {
+        super(context, attrs);
+
+        mController = new NightDisplayController(context);
+        mTimeFormatter = android.text.format.DateFormat.getTimeFormat(context);
+        mTimeFormatter.setTimeZone(TimeZone.getTimeZone("UTC"));
+    }
+
+    @Override
+    public void onAttached() {
+        super.onAttached();
+
+        // Listen for changes only while attached.
+        mController.setListener(this);
+
+        // Update the summary since the state may have changed while not attached.
+        updateSummary();
+    }
+
+    @Override
+    public void onDetached() {
+        super.onDetached();
+
+        // Stop listening for state changes.
+        mController.setListener(null);
+    }
+
+    private String getFormattedTimeString(NightDisplayController.LocalTime localTime) {
+        final Calendar c = Calendar.getInstance();
+        c.setTimeZone(mTimeFormatter.getTimeZone());
+        c.set(Calendar.HOUR_OF_DAY, localTime.hourOfDay);
+        c.set(Calendar.MINUTE, localTime.minute);
+        c.set(Calendar.SECOND, 0);
+        c.set(Calendar.MILLISECOND, 0);
+        return mTimeFormatter.format(c.getTime());
+    }
+
+    private void updateSummary() {
+        final Context context = getContext();
+
+        final boolean isActivated = mController.isActivated();
+        final int autoMode = mController.getAutoMode();
+
+        final String autoModeSummary;
+        switch (autoMode) {
+            default:
+            case NightDisplayController.AUTO_MODE_DISABLED:
+                autoModeSummary = context.getString(isActivated
+                        ? R.string.night_display_summary_on_auto_mode_never
+                        : R.string.night_display_summary_off_auto_mode_never);
+                break;
+            case NightDisplayController.AUTO_MODE_CUSTOM:
+                if (isActivated) {
+                    autoModeSummary = context.getString(
+                            R.string.night_display_summary_on_auto_mode_custom,
+                            getFormattedTimeString(mController.getCustomEndTime()));
+                } else {
+                    autoModeSummary = context.getString(
+                            R.string.night_display_summary_off_auto_mode_custom,
+                            getFormattedTimeString(mController.getCustomStartTime()));
+                }
+                break;
+            case NightDisplayController.AUTO_MODE_TWILIGHT:
+                autoModeSummary = context.getString(isActivated
+                        ? R.string.night_display_summary_on_auto_mode_twilight
+                        : R.string.night_display_summary_off_auto_mode_twilight);
+                break;
+        }
+
+        final int summaryFormatResId = isActivated ? R.string.night_display_summary_on
+                : R.string.night_display_summary_off;
+        setSummary(context.getString(summaryFormatResId, autoModeSummary));
+    }
+
+    @Override
+    public void onActivated(boolean activated) {
+        updateSummary();
+    }
+
+    @Override
+    public void onAutoModeChanged(int autoMode) {
+        updateSummary();
+    }
+
+    @Override
+    public void onCustomStartTimeChanged(NightDisplayController.LocalTime startTime) {
+        updateSummary();
+    }
+
+    @Override
+    public void onCustomEndTimeChanged(NightDisplayController.LocalTime endTime) {
+        updateSummary();
+    }
+}
diff --git a/src/com/android/settings/display/NightDisplaySettings.java b/src/com/android/settings/display/NightDisplaySettings.java
new file mode 100644
index 0000000..ecba527
--- /dev/null
+++ b/src/com/android/settings/display/NightDisplaySettings.java
@@ -0,0 +1,226 @@
+/**
+ * Copyright (C) 2016 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.display;
+
+import android.app.Dialog;
+import android.app.TimePickerDialog;
+import android.content.Context;
+import android.os.Bundle;
+import android.support.v7.preference.DropDownPreference;
+import android.support.v7.preference.Preference;
+import android.widget.Switch;
+import android.widget.TimePicker;
+
+import com.android.internal.app.NightDisplayController;
+import com.android.internal.logging.MetricsProto.MetricsEvent;
+import com.android.settings.R;
+import com.android.settings.SettingsActivity;
+import com.android.settings.SettingsPreferenceFragment;
+import com.android.settings.widget.SwitchBar;
+
+import java.text.DateFormat;
+import java.util.Calendar;
+import java.util.TimeZone;
+
+/**
+ * Settings screen for Night display.
+ */
+public class NightDisplaySettings extends SettingsPreferenceFragment implements
+        NightDisplayController.Callback,
+        Preference.OnPreferenceChangeListener,
+        SwitchBar.OnSwitchChangeListener {
+
+    private static final String KEY_NIGHT_DISPLAY_AUTO_MODE = "night_display_auto_mode";
+    private static final String KEY_NIGHT_DISPLAY_START_TIME = "night_display_start_time";
+    private static final String KEY_NIGHT_DISPLAY_END_TIME = "night_display_end_time";
+
+    private static final int DIALOG_START_TIME = 0;
+    private static final int DIALOG_END_TIME = 1;
+
+    private NightDisplayController mController;
+    private DateFormat mTimeFormatter;
+
+    private DropDownPreference mAutoModePreference;
+    private Preference mStartTimePreference;
+    private Preference mEndTimePreference;
+
+    private SwitchBar mSwitchBar;
+
+    @Override
+    public void onCreate(Bundle savedInstanceState) {
+        super.onCreate(savedInstanceState);
+
+        final Context context = getContext();
+        mController = new NightDisplayController(context);
+
+        mTimeFormatter = android.text.format.DateFormat.getTimeFormat(context);
+        mTimeFormatter.setTimeZone(TimeZone.getTimeZone("UTC"));
+    }
+
+    @Override
+    public void onCreatePreferences(Bundle savedInstanceState, String rootKey) {
+        super.onCreatePreferences(savedInstanceState, rootKey);
+
+        // Load the preferences from xml.
+        addPreferencesFromResource(R.xml.night_display_settings);
+
+        mAutoModePreference = (DropDownPreference) findPreference(KEY_NIGHT_DISPLAY_AUTO_MODE);
+        mStartTimePreference = findPreference(KEY_NIGHT_DISPLAY_START_TIME);
+        mEndTimePreference = findPreference(KEY_NIGHT_DISPLAY_END_TIME);
+
+        mAutoModePreference.setEntries(new CharSequence[] {
+                getString(R.string.night_display_auto_mode_never),
+                getString(R.string.night_display_auto_mode_custom),
+                getString(R.string.night_display_auto_mode_twilight)
+        });
+        mAutoModePreference.setEntryValues(new CharSequence[] {
+                String.valueOf(NightDisplayController.AUTO_MODE_DISABLED),
+                String.valueOf(NightDisplayController.AUTO_MODE_CUSTOM),
+                String.valueOf(NightDisplayController.AUTO_MODE_TWILIGHT)
+        });
+        mAutoModePreference.setOnPreferenceChangeListener(this);
+    }
+
+    @Override
+    public void onActivityCreated(Bundle savedInstanceState) {
+        super.onActivityCreated(savedInstanceState);
+
+        mSwitchBar = ((SettingsActivity) getActivity()).getSwitchBar();
+        mSwitchBar.addOnSwitchChangeListener(this);
+        mSwitchBar.show();
+    }
+
+    @Override
+    public void onStart() {
+        super.onStart();
+
+        // Listen for changes only while visible.
+        mController.setListener(this);
+
+        // Update the current state since it have changed while not visible.
+        onActivated(mController.isActivated());
+        onAutoModeChanged(mController.getAutoMode());
+        onCustomStartTimeChanged(mController.getCustomStartTime());
+        onCustomEndTimeChanged(mController.getCustomEndTime());
+    }
+
+    @Override
+    public void onStop() {
+        super.onStop();
+
+        // Stop listening for state changes.
+        mController.setListener(null);
+    }
+
+    @Override
+    public boolean onPreferenceTreeClick(Preference preference) {
+        if (preference == mStartTimePreference) {
+            showDialog(DIALOG_START_TIME);
+            return true;
+        } else if (preference == mEndTimePreference) {
+            showDialog(DIALOG_END_TIME);
+            return true;
+        }
+        return super.onPreferenceTreeClick(preference);
+    }
+
+    @Override
+    public Dialog onCreateDialog(final int dialogId) {
+        if (dialogId == DIALOG_START_TIME || dialogId == DIALOG_END_TIME) {
+            final NightDisplayController.LocalTime initialTime;
+            if (dialogId == DIALOG_START_TIME) {
+                initialTime = mController.getCustomStartTime();
+            } else {
+                initialTime = mController.getCustomEndTime();
+            }
+
+            final Context context = getContext();
+            final boolean use24HourFormat = android.text.format.DateFormat.is24HourFormat(context);
+            return new TimePickerDialog(context, new TimePickerDialog.OnTimeSetListener() {
+                @Override
+                public void onTimeSet(TimePicker view, int hourOfDay, int minute) {
+                    final NightDisplayController.LocalTime time =
+                            new NightDisplayController.LocalTime(hourOfDay, minute);
+                    if (dialogId == DIALOG_START_TIME) {
+                        mController.setCustomStartTime(time);
+                    } else {
+                        mController.setCustomEndTime(time);
+                    }
+                }
+            }, initialTime.hourOfDay, initialTime.minute, use24HourFormat);
+        }
+        return super.onCreateDialog(dialogId);
+    }
+
+    @Override
+    public void onActivated(boolean activated) {
+        mSwitchBar.setChecked(activated);
+    }
+
+    @Override
+    public void onAutoModeChanged(int autoMode) {
+        mAutoModePreference.setValue(String.valueOf(autoMode));
+
+        final boolean showCustomSchedule = autoMode == NightDisplayController.AUTO_MODE_CUSTOM;
+        mStartTimePreference.setVisible(showCustomSchedule);
+        mEndTimePreference.setVisible(showCustomSchedule);
+    }
+
+    private String getFormattedTimeString(NightDisplayController.LocalTime localTime) {
+        final Calendar c = Calendar.getInstance();
+        c.setTimeZone(mTimeFormatter.getTimeZone());
+        c.set(Calendar.HOUR_OF_DAY, localTime.hourOfDay);
+        c.set(Calendar.MINUTE, localTime.minute);
+        c.set(Calendar.SECOND, 0);
+        c.set(Calendar.MILLISECOND, 0);
+        return mTimeFormatter.format(c.getTime());
+    }
+
+    @Override
+    public void onCustomStartTimeChanged(NightDisplayController.LocalTime startTime) {
+        mStartTimePreference.setSummary(getFormattedTimeString(startTime));
+    }
+
+    @Override
+    public void onCustomEndTimeChanged(NightDisplayController.LocalTime endTime) {
+        mEndTimePreference.setSummary(getFormattedTimeString(endTime));
+    }
+
+    @Override
+    public void onSwitchChanged(Switch switchView, boolean isChecked) {
+        // Attempt to update the NIGHT_DISPLAY_ACTIVATED setting if necessary.
+        final boolean isActivated = mController.isActivated();
+        if (isActivated != isChecked) {
+            if (mController.setActivated(isChecked)) {
+                switchView.setChecked(isActivated);
+            }
+        }
+    }
+
+    @Override
+    public boolean onPreferenceChange(Preference preference, Object newValue) {
+        if (preference == mAutoModePreference) {
+            return mController.setAutoMode(Integer.parseInt((String) newValue));
+        }
+        return false;
+    }
+
+    @Override
+    protected int getMetricsCategory() {
+        return MetricsEvent.NIGHT_DISPLAY_SETTINGS;
+    }
+}