Add comment on why scroll returns true even on null event

Change-Id: If61d43ddcd088eac5260a416553a8d8c6f4b539a

1 files changed, 2 insertions, 0 deletions

diff --git a/src/com/google/android/droiddriver/scroll/AccessibilityEventScrollStepStrategy.java b/src/com/google/android/droiddriver/scroll/AccessibilityEventScrollStepStrategy.java
index a678d37..5e3d766 100644
--- a/src/com/google/android/droiddriver/scroll/AccessibilityEventScrollStepStrategy.java
+++ b/src/com/google/android/droiddriver/scroll/AccessibilityEventScrollStepStrategy.java
@@ -123,6 +123,8 @@ public class AccessibilityEventScrollStepStrategy implements ScrollStepStrategy
       event.recycle();
     }
 
+    // Even if event == null, that does not mean scroll has no effect!
+    // Some views may not emit correct events when the content changed.
     return true;
   }