1 files changed, 2 insertions, 1 deletions
diff --git a/samples/Support7Demos/src/com/example/android/supportv7/widget/BaseLayoutManagerActivity.java b/samples/Support7Demos/src/com/example/android/supportv7/widget/BaseLayoutManagerActivity.java
index 782da523b..002a5745f 100644
--- a/samples/Support7Demos/src/com/example/android/supportv7/widget/BaseLayoutManagerActivity.java
+++ b/samples/Support7Demos/src/com/example/android/supportv7/widget/BaseLayoutManagerActivity.java
@@ -25,6 +25,7 @@ import com.example.android.supportv7.widget.util.ConfigViewHolder;
 import android.app.Activity;
 import android.content.Context;
 import android.os.Bundle;
+import android.support.v7.widget.DefaultItemAnimator;
 import android.support.v7.widget.LinearLayoutManager;
 import android.support.v7.widget.RecyclerView;
 import android.view.LayoutInflater;
@@ -69,7 +70,7 @@ abstract public class BaseLayoutManagerActivity<T extends RecyclerView.LayoutMan
         mLayoutManager = createLayoutManager();
         mRecyclerView.setLayoutManager(mLayoutManager);
         mRecyclerView.setAdapter(createAdapter());
-        mRecyclerView.getItemAnimator().setSupportsChangeAnimations(true);
+        ((DefaultItemAnimator)mRecyclerView.getItemAnimator()).setSupportsChangeAnimations(true);
         onRecyclerViewInit(mRecyclerView);
     }