diff --git a/cgeDemo/src/main/res/layout/activity_image_demo_with_matrix.xml b/cgeDemo/src/main/res/layout/activity_image_demo_with_matrix.xml
index adfe7122..cc15be9f 100644
--- a/cgeDemo/src/main/res/layout/activity_image_demo_with_matrix.xml
+++ b/cgeDemo/src/main/res/layout/activity_image_demo_with_matrix.xml
@@ -1,31 +1,32 @@
 <LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
-    android:layout_width="match_parent"
-    android:layout_height="match_parent"
-    android:orientation="vertical">
-
-    <Spinner
-        android:id="@+id/filter_item"
         android:layout_width="match_parent"
-        android:layout_height="80dp" />
+        android:layout_height="match_parent"
+        android:orientation="vertical">
+    <Spinner
+            android:id="@+id/filter_item"
+            android:layout_width="match_parent"
+            android:layout_height="80dp" />
 
-    <SeekBar
-        android:id="@+id/intensity"
-        android:layout_width="match_parent"
-        android:layout_height="80dp"
-        android:layout_gravity="center_horizontal|top" />
+    <org.wysaid.cgeDemo.view.MatrixMutualViewGroup
+            android:id="@+id/demo_view"
+            android:layout_width="match_parent"
+            android:layout_height="0dp"
+            android:layout_weight="1">
 
 
-    <org.wysaid.cgeDemo.view.MatrixMutualViewGroup
-        android:id="@+id/demo_view"
-        android:layout_width="match_parent"
-        android:layout_height="0dp"
-        android:layout_weight="1" />
+        <SeekBar
+                android:id="@+id/intensity"
+                android:layout_width="match_parent"
+                android:layout_height="80dp"
+                android:layout_gravity="center_horizontal|top" />
+
+    </org.wysaid.cgeDemo.view.MatrixMutualViewGroup>
 
     <TextView
-        android:layout_width="wrap_content"
-        android:layout_height="wrap_content"
-        android:layout_gravity="center"
-        android:padding="10dp"
-        android:text="You can try using two hands to zoom and one hand drag" />
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:layout_gravity="center"
+            android:padding="10dp"
+            android:text="You can try using two hands to zoom and one hand drag" />
 
 </LinearLayout>
\ No newline at end of file