Don't auto scroll empty lists

BUG: 12930741
Change-Id: I22bcebace0d5e0d519d38b34d6312ffff5b62f9b

diff --git a/core/java/com/android/internal/widget/AutoScrollHelper.java b/core/java/com/android/internal/widget/AutoScrollHelper.java
index 7a294aa..0d468ca 100644 (file)
--- a/core/java/com/android/internal/widget/AutoScrollHelper.java
+++ b/core/java/com/android/internal/widget/AutoScrollHelper.java
@@ -892,6 +892,10 @@ public abstract class AutoScrollHelper implements View.OnTouchListener {
         public boolean canTargetScrollVertically(int direction) {
             final AbsListView target = mTarget;
             final int itemCount = target.getCount();
+            if (itemCount == 0) {
+                return false;
+            }
+
             final int childCount = target.getChildCount();
             final int firstPosition = target.getFirstVisiblePosition();
             final int lastPosition = firstPosition + childCount;