UsageStats should deal with changing time

When the system time is changed, the UsageStats API
will modify all existing entries to correspond with the
new time change. If the time changed when the device was
off, stats in the future will be deleted.

Change-Id: Ica3e9917d4d1a180f97700e52ab390e3673e1e82

1 files changed, 4 insertions, 1 deletions

diff --git a/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageLogActivity.java b/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageLogActivity.java
index 31e7c38d3a03..d9a3b6171ffc 100644
--- a/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageLogActivity.java
+++ b/tests/UsageStatsTest/src/com/android/tests/usagestats/UsageLogActivity.java
@@ -86,7 +86,10 @@ public class UsageLogActivity extends ListActivity implements Runnable {
                 }
                 mEvents.addFirst(event);
             }
-            notifyDataSetChanged();
+
+            if (lastTimeStamp != 0) {
+                notifyDataSetChanged();
+            }
             return lastTimeStamp;
         }