Update strings on date & time setting.

Change-Id: Ia0f15fd7e680d6dd864567a31186b7e2090c435f
Fixes: 123812588
Test: visual
diff --git a/res/values/strings.xml b/res/values/strings.xml
index c891432..ea7c5c3 100644
--- a/res/values/strings.xml
+++ b/res/values/strings.xml
@@ -729,41 +729,26 @@
     <!-- Main Settings screen setting option summary text for the item to go into the date and time settings. -->
     <string name="date_and_time_settings_summary">Set date, time, time zone, &amp; formats</string>
     <!-- Date & time setting screen setting check box title if the date and time should be determined automatically [CHAR LIMIT=30] -->
-    <string name="date_time_auto">Automatic date &amp; time</string>
-    <!-- Date & time setting screen setting option summary text when Automatic check box is selected
-        (that is, when date and time should be determined automatically) [CHAR LIMIT=100] -->
-    <string name="date_time_auto_summaryOn">Use network-provided time</string>
-    <!-- Date & time setting screen setting option summary text when Automatic check box is clear
-        [CHAR LIMIT=100] -->
-    <string name="date_time_auto_summaryOff">Use network-provided time</string>
-    <!-- Date & time setting screen setting check box title if the time zone should be determined automatically [CHAR LIMIT=30] -->
-    <string name="zone_auto">Automatic time zone</string>
-    <!-- Date & time setting screen setting option summary text when Automatic time zone check box is selected (that is, when date and time should be determined automatically)
+    <string name="date_time_auto">Use network-provided time</string>
+    <!-- Date & time setting screen setting option text when Automatic time zone check box is selected (that is, when date and time should be determined automatically)
         [CHAR LIMIT=100]  -->
-    <string name="zone_auto_summaryOn">Use network-provided time zone</string>
-    <!-- Date & time setting screen setting option summary text when Automatic time zone check box is clear
-        [CHAR LIMIT=100] -->
-    <string name="zone_auto_summaryOff">Use network-provided time zone</string>
-    <!-- Date & time setting screen setting check box title if the 24 hour setting should be determined automatically [CHAR LIMIT=30] -->
-    <string name="date_time_24hour_auto">Automatic 24\u2011hour format</string>
+    <string name="zone_auto_title">Use network-provided time zone</string>
     <!-- Date & time setting screen setting option summary text for the automatic 24 hour setting checkbox [CHAR LIMIT=100] -->
-    <string name="date_time_24hour_auto_summary">Use locale default</string>
+    <string name="date_time_24hour_auto">Use locale default</string>
     <!-- Date & time setting screen setting check box title [CHAR LIMIT=30] -->
     <string name="date_time_24hour_title">24\u2011hour format</string>
     <!-- Date & time setting screen setting check box title -->
     <string name="date_time_24hour">Use 24-hour format</string>
     <!-- Date & time setting screen setting option title [CHAR LIMIT=30] -->
     <string name="date_time_set_time_title">Time</string>
-    <!-- Date & time setting screen setting option title -->
-    <string name="date_time_set_time">Set time</string>
+    <!-- Date & time setting screen title for setting time format (allowing user to set device display in 12-hour format or 24-hour format) [CHAR LIMIT=30] -->
+    <string name="time_format_category_title">Time format</string>
     <!-- Date & time setting screen setting option title [CHAR LIMIT=30] -->
     <string name="date_time_set_timezone_title">Time zone</string>
     <!-- Date & time setting screen setting option title -->
     <string name="date_time_set_timezone">Select time zone</string>
     <!-- Date & time setting screen setting option title [CHAR LIMIT=30] -->
     <string name="date_time_set_date_title">Date</string>
-    <!-- Date & time setting screen setting option title -->
-    <string name="date_time_set_date">Set date</string>
     <!-- Text hint to search region in time zone setting screen -->
     <string name="date_time_search_region">Search region</string>
     <!-- Setting option title to select region in time zone setting screen [CHAR LIMIT=30] -->
diff --git a/res/xml/date_time_prefs.xml b/res/xml/date_time_prefs.xml
index edda1ba..f98ce3d 100644
--- a/res/xml/date_time_prefs.xml
+++ b/res/xml/date_time_prefs.xml
@@ -27,20 +27,18 @@
         <com.android.settingslib.RestrictedSwitchPreference
             android:key="auto_time"
             android:title="@string/date_time_auto"
-            android:summaryOn="@string/date_time_auto_summaryOn"
-            android:summaryOff="@string/date_time_auto_summaryOff"
             settings:useAdditionalSummary="true"
             settings:userRestriction="no_config_date_time" />
 
         <com.android.settingslib.RestrictedPreference
             android:key="date"
-            android:title="@string/date_time_set_date"
+            android:title="@string/date_time_set_date_title"
             android:summary="@string/summary_placeholder"
             settings:userRestriction="no_config_date_time" />
 
         <com.android.settingslib.RestrictedPreference
             android:key="time"
-            android:title="@string/date_time_set_time"
+            android:title="@string/date_time_set_time_title"
             android:summary="@string/summary_placeholder"
             settings:userRestriction="no_config_date_time" />
     </PreferenceCategory>
@@ -50,27 +48,23 @@
         android:layout="@layout/preference_category_no_label">
         <com.android.settingslib.RestrictedSwitchPreference
             android:key="auto_zone"
-            android:title="@string/zone_auto"
-            android:summaryOn="@string/zone_auto_summaryOn"
-            android:summaryOff="@string/zone_auto_summaryOff"
+            android:title="@string/zone_auto_title"
             settings:userRestriction="no_config_date_time" />
 
         <com.android.settingslib.RestrictedPreference
-            android:fragment="com.android.settings.datetime.timezone.TimeZoneSettings"
             android:key="timezone"
-            android:title="@string/date_time_set_timezone"
+            android:title="@string/date_time_set_timezone_title"
             android:summary="@string/summary_placeholder"
+            android:fragment="com.android.settings.datetime.timezone.TimeZoneSettings"
             settings:userRestriction="no_config_date_time" />
     </PreferenceCategory>
 
     <PreferenceCategory
         android:key="time_format_preference_category"
-        android:layout="@layout/preference_category_no_label">
+        android:title="@string/time_format_category_title">
         <SwitchPreference
             android:key="auto_24hour"
-            android:title="@string/date_time_24hour_auto"
-            android:summaryOn="@string/date_time_24hour_auto_summary"
-            android:summaryOff="@string/date_time_24hour_auto_summary" />
+            android:title="@string/date_time_24hour_auto"/>
 
         <SwitchPreference
             android:key="24 hour"