am d547bcec: Merge "Return the actual interpolator of the ViewPropertyAnimator"

* commit 'd547bcec5634f99195a2b12522b6977f61c40d55':
  Return the actual interpolator of the ViewPropertyAnimator

core/java/android/view/ViewPropertyAnimator.java

@@ -97,6 +97,12 @@ public class ViewPropertyAnimator {
      */
     private Animator.AnimatorListener mListener = null;
 
+    /**
+     * A lazily-created ValueAnimator used in order to get some default animator properties
+     * (duration, start delay, interpolator, etc.).
+     */
+    private ValueAnimator mTempValueAnimator;
+
     /**
      * This listener is the mechanism by which the underlying Animator causes changes to the
      * properties currently being animated, as well as the cleanup after an animation is
@@ -268,7 +274,10 @@ public class ViewPropertyAnimator {
         } else {
             // Just return the default from ValueAnimator, since that's what we'd get if
             // the value has not been set otherwise
-            return new ValueAnimator().getDuration();
+            if (mTempValueAnimator == null) {
+                mTempValueAnimator = new ValueAnimator();
+            }
+            return mTempValueAnimator.getDuration();
         }
     }
 
@@ -328,7 +337,16 @@ public class ViewPropertyAnimator {
      * @return The timing interpolator for this animation.
      */
     public TimeInterpolator getInterpolator() {
-        return null;
+        if (mInterpolatorSet) {
+            return mInterpolator;
+        } else {
+            // Just return the default from ValueAnimator, since that's what we'd get if
+            // the value has not been set otherwise
+            if (mTempValueAnimator == null) {
+                mTempValueAnimator = new ValueAnimator();
+            }
+            return mTempValueAnimator.getInterpolator();
+        }
     }
 
     /**