implemented setOnItemLongClickListener
diff --git a/src/main/java/com/xtremelabs/robolectric/shadows/ShadowAdapterView.java b/src/main/java/com/xtremelabs/robolectric/shadows/ShadowAdapterView.java
index b36652b..87e9382 100644
--- a/src/main/java/com/xtremelabs/robolectric/shadows/ShadowAdapterView.java
+++ b/src/main/java/com/xtremelabs/robolectric/shadows/ShadowAdapterView.java
@@ -193,6 +193,11 @@
     }
 
     @Implementation
+    public void setOnItemLongClickListener(AdapterView.OnItemLongClickListener listener) {
+        this.onItemLongClickListener = listener;
+    }
+
+    @Implementation
     public Object getItemAtPosition(int position) {
         Adapter adapter = getAdapter();
         return (adapter == null || position < 0) ? null : adapter.getItem(position);