SupportLeanbackDemo: show case of different image scale type

b/17703309

Change-Id: Iaf3b5e519e09c7e2a728fe048f8a63e3b9b16cfe
diff --git a/samples/SupportLeanbackDemos/src/com/example/android/leanback/CardPresenter.java b/samples/SupportLeanbackDemos/src/com/example/android/leanback/CardPresenter.java
index 4c53342..17688c2 100644
--- a/samples/SupportLeanbackDemos/src/com/example/android/leanback/CardPresenter.java
+++ b/samples/SupportLeanbackDemos/src/com/example/android/leanback/CardPresenter.java
@@ -23,11 +23,14 @@
 import android.view.ViewGroup.LayoutParams;
 import android.widget.TextView;
 
+import java.util.Random;
+
 public class CardPresenter extends Presenter {
     private static final String TAG = "CardPresenter";
 
     private static final int IMAGE_HEIGHT_DP = 120;
 
+    private static Random sRand = new Random();
     private static int sRowHeight = 0;
     private static int sExpandedRowHeight = 0;
 
@@ -62,8 +65,17 @@
         ImageCardView v = new ImageCardView(parent.getContext());
         v.setFocusable(true);
         v.setFocusableInTouchMode(true);
-        v.setMainImageAdjustViewBounds(true);
-        v.setMainImageDimensions(LayoutParams.WRAP_CONTENT, getRowHeight(parent.getContext()));
+        // Randomly makes image view crop as a square or just stretch to original
+        // aspect ratio.
+        if (sRand.nextBoolean()) {
+            v.setMainImageAdjustViewBounds(false);
+            v.setMainImageDimensions(getRowHeight(parent.getContext()),
+                    getRowHeight(parent.getContext()));
+        } else {
+            v.setMainImageAdjustViewBounds(true);
+            v.setMainImageDimensions(LayoutParams.WRAP_CONTENT,
+                    getRowHeight(parent.getContext()));
+        }
         return new ViewHolder(v);
     }