Increase the number of notification items that can be shown in Notification history - Recently dismissed

 Increase the max number of items shown in 'Notification history - Recently dismissed' from 6 to 50.

Bug: 255784319
Test: Manual: Dismiss 6 or more notifications, open Settings-Notifications-Notification History, the max item count under `Recently dismissed` should be 50.
Change-Id: Ia13158ae1ebca448d43bf4c6f6037758b3f40615
diff --git a/src/com/android/settings/notification/history/NotificationHistoryActivity.java b/src/com/android/settings/notification/history/NotificationHistoryActivity.java
index 4fecfc9..1f83cc7 100644
--- a/src/com/android/settings/notification/history/NotificationHistoryActivity.java
+++ b/src/com/android/settings/notification/history/NotificationHistoryActivity.java
@@ -73,6 +73,10 @@
 public class NotificationHistoryActivity extends CollapsingToolbarBaseActivity {
 
     private static String TAG = "NotifHistory";
+    // MAX_RECENT_DISMISS_ITEM_COUNT needs to be less or equals than
+    // R.integer.config_notificationServiceArchiveSize, which is the Number of notifications kept
+    // in the notification service historical archive
+    private static final int MAX_RECENT_DISMISS_ITEM_COUNT = 50;
 
     private ViewGroup mHistoryOn;
     private ViewGroup mHistoryOff;
@@ -388,7 +392,8 @@
                 snoozed = getSnoozedNotifications();
                 dismissed = mNm.getHistoricalNotificationsWithAttribution(
                         NotificationHistoryActivity.this.getPackageName(),
-                        NotificationHistoryActivity.this.getAttributionTag(), 6, false);
+                        NotificationHistoryActivity.this.getAttributionTag(),
+                        MAX_RECENT_DISMISS_ITEM_COUNT, false);
             } catch (SecurityException | RemoteException e) {
                 Log.d(TAG, "OnPaused called while trying to retrieve notifications");
             }