Remove dynamic summaries for "On the lockscreen"

Bug:36101902
Test: make RunSettingsRoboTests
Change-Id: Ie004f07f4c543a99c2b2ad1e5d7c8b2ef49246d5
diff --git a/res/xml/configure_notification_settings.xml b/res/xml/configure_notification_settings.xml
index a6ffff4..09ac2c8 100644
--- a/res/xml/configure_notification_settings.xml
+++ b/res/xml/configure_notification_settings.xml
@@ -31,7 +31,7 @@
     <com.android.settings.notification.RestrictedDropDownPreference
         android:key="lock_screen_notifications"
         android:title="@string/lock_screen_notifications_title"
-        android:summary="%s"/>
+        android:summary="@string/summary_placeholder"/>
 
     <SwitchPreference
         android:key="gesture_swipe_down_fingerprint"
@@ -45,7 +45,7 @@
         <com.android.settings.notification.RestrictedDropDownPreference
             android:key="lock_screen_notifications_profile"
             android:title="@string/lock_screen_notifications_title"
-            android:summary="%s"/>
+            android:summary="@string/summary_placeholder"/>
 
     </PreferenceCategory>
 
diff --git a/res/xml/security_lockscreen_settings.xml b/res/xml/security_lockscreen_settings.xml
index e151b2b..2a4416e 100644
--- a/res/xml/security_lockscreen_settings.xml
+++ b/res/xml/security_lockscreen_settings.xml
@@ -21,7 +21,7 @@
         <com.android.settings.notification.RestrictedDropDownPreference
             android:key="lock_screen_notifications"
             android:title="@string/lock_screen_notifications_title"
-            android:summary="%s"/>
+            android:summary="@string/summary_placeholder"/>
 
         <com.android.settingslib.RestrictedSwitchPreference
             android:key="add_users_when_locked"
diff --git a/src/com/android/settings/notification/LockScreenNotificationPreferenceController.java b/src/com/android/settings/notification/LockScreenNotificationPreferenceController.java
index 547ff80..73469b0 100644
--- a/src/com/android/settings/notification/LockScreenNotificationPreferenceController.java
+++ b/src/com/android/settings/notification/LockScreenNotificationPreferenceController.java
@@ -281,6 +281,7 @@
             return;
         }
         mLockscreenSelectedValue = getSummaryResource();
+        mLockscreen.setSummary("%s");
         mLockscreen.setValue(Integer.toString(mLockscreenSelectedValue));
     }